Joel Sartore Joel Sartore

National Geographic Photographer and Speaker


Joel is the founder of the Photo Ark, a groundbreaking effort to document species before they disappear—and to get people to care while there’s still time.

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Explore the Photo Ark

Search the 48,961-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 14,764 species in Photo Ark as of today
    Explore the Photo Ark Search the [photoark_count]-picture Photo Ark for an animal or species.
  • 25 years to document every species in human care
Photo: Captive gray wolf at the International Wolf Center in Ely, MN.

Gallery

In the Field

Explore the best wildlife images from Joel’s 25+ year career from tree climbing lions in Africa, penguins in Antarctica to wild parrots of the Amazon. Don’t see an image that you’re looking for? Use the search field at the top of this page to type in the species or subject you’d like to find.

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Photo: An Edwards's fig parrot (Psittaculirostris edwardsii) at Loro Parque Fundacion.

Gallery

The Photo Ark

See some of the most powerful, interesting, and popular images from the Photo Ark.

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Gallery

Behind the Scenes

Take a look behind the scenes as Joel travels the world photographing on assignment and for the Photo Ark.

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  • Picture of a Haitian dwarf boa (Tropidophis haetianus) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A lake chubsucker (Erimyzon sucetta) from a private collection in Knoxville, Tennessee.
  • A lesser vasa parrot (Coracopsis nigra) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: An endangered Lake Eacham rainbowfish (Melanotaenia eachamensis) at Zoo Leipzig in Germany.
  • Photo: A chestnut-bellied guan (Penelope ochrogaster) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a great blue heron (Ardea herodias herodias) being cared for by Nebraska Wildlife Rehab.
  • Photo: A parrot cichlid (Hoplarchus psittacus) at the Denver Zoo.
  • Photo: A yellowhead butterflyfish (Chaetodon xanthocephalus) at De Jong Marinelife in Spijk, Netherlands.
  • Photo: A torrent frog tadpole (Telmatobius hintoni) at Museo De Historia Natural "Alcide d'Orbigny". This species is listed as vulnerable on the IUCN Red List.
  • Photo: A Yonahlossee salamander (Plethodon yonahlossee) at the Tennessee Aquarium.
  • A greater plated lizard (Gerrhosaurus major) at Reptile Gardens.
  • Photo: A Biak tree monitor (Varanus kordensis) at Hogle Zoo.
  • Photo: A Western rainbowfish (Melanotaenia australis) at Zoo Brno in Brno, the Czech Republic.
  • Photo: A Brazilian rainbow boa (Epicrates cenchria) at the John Ball Zoo.
  • Photo: A bearded pygmy chameleon, Rhampholeon brevicaudata, at the Sedgwick County Zoo.
  • Photo: A banded sculpin (Cottus carolinae) taken from the Conasauga River near Conasauga, Tennessee.
  • Vulnerable (IUCN) and federally threatened Chiricahua leopard frogs (Lithobates chiricahuensis) at the Phoenix Zoo, Phoenix, Arizona.
  • Picture of a critically endangered suwannee moccasinshell (Medionidus walkeri) collected from the Suwannee River in Florida.
  • Photo: A female white-winged crossbill (Loxia leucoptera leucoptera) photographed at the Wildlife Rehabilitation Center of Minnesota.
  • Picture of a crevice kelpfish (Gibbonsia montereyensis) at the REEF, at the University of California, Santa Barbara.
  • Photo: A willow grouse (Lagopus lagopus lagopus) at Lundi Farm in Verl, Germany.
  • Photo: A juvenile black milk snake, Lampropeltis triangulum gaigeae, at the Crayfish lab in West Liberty University in West Liberty, WV.
  • Photo: Bigmouth buffalo (Ictiobus cyprinellus) at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • Juvenile common Garden Lizard (Calotes versicolor versicolor) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • A Louisiana milk snake (Lampropeltis triangulum amaura) at the Houston Zoo.
  • Picture of a vulnerable Chaco side-necked turtle (Acanthochelys pallidipectoris) at the Tulsa Zoo.
  • Leafcutter ants (Atta spp.) at the St. Louis Zoo.
  • A critically endangered (IUCN) and federally endangered Panamanian golden frog (Atelopus zeteki) at the Cheyenne Mountain Zoo.
  • A picture of a speckled mouse bird (Colius striatus rhodesiae) collected at Chitengo Camp.
  • Photo: Trachyaretaon sp "AuroraÓ at the Budapest Zoo. This is new to science.
  • Studio portrait of a northern red-backed vole (Clethrionomys rutilus.)
  • Southeast Asian softshelled turtle (Amyda cartilaginea cartilaginea) a vulnerable species at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Blanding's turtle (Emydoidea blandingii) at the Toledo Zoo.
  • A federally endangered fanshell (Cyprogenia stegaria) taken from the Clinch River near Sneedville.
  • Photo: Stick insect (Sipyloidea biplagiata) at the Moscow Zoo.
  • A picture of a killdeer (Charadrius vociferus vociferus) at the Columbus Zoo.
  • Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.
  • Photo: Digger crayfish (Fallicambarus fodiens) from the wild.
  • A male black-bellied brent goose (Branta bernicla nigricans) at WWT Slimbridge in England.
  • Photo: A cordilleran parakeet (Psittacara frontatus minor) at Loro Parque Fundacion.
  • A white-faced whistling duck (Dendrocygna viduata) at the Lincoln Children's Zoo.
  • Photo: A smallscale terapon (Terapon puta) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • Photo: Barcoo grunter (Scortum barcoo) at the Freshwater Ecology and Marine Biology Dept. at Templestowe College.
  • A Gunther's banded treefrog, Hypsiboas fasciatus.
  • A close up of a banded tree snail (Orthalicus floridensis) from Crocodile Lake National Wildlife Refuge on Key Largo.
  • Green frog (Rana clamitans) at the Toledo Zoo.
  • A picture of a silver cloud moth (Egira conspicillaris) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: Banded sculpin (Cottus carolinae) at the Fish Biodiversity Lab at Auburn University.
  • Photo: A black-tailed marmoset (Mico melanurus) at Hemsley Conservation Centre in Fairseat, England.
  • Photo: Tinfoil barb (Barbonymus schwanenfeldii) at Zoo Negara.
  • Brazilian giant blonde tarantula (Nhandu tripepii) at the Cleveland Metroparks Zoo.
  • Picture of a federally endangered Ozark hellbender (Cryptobranchus alleganiensis bishopi), infected with chytrid fungus, at the St. Louis Zoo, St. Louis, Missouri.
  • Photo: From left, a female and male emerald betta (Betta smaragdina) at Zoo Plzeň in the Czech Republic.
  • Photo: A Somali deathstalker scorpion (Leiurus somalicus) at Verve Biotech in Waverly, Nebraska.
  • Photo: A corkwing wrasse (Symphodus melops) at The National Aquarium in Abu Dhabi, United Arab Emirates.
  • Photo: A unidentified burrowing mayfly nymph (Ephemeridae sp.) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Seven Springs, Pennsylvania.
  • Photo: Guianan toucanet (Selenidera piperivora) from Le Parc des Oiseaux in Villars Les Dombes, France.
  • Picture of endangered Malagasy rainbow frogs (Scaphiophryne gottlebei) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • An Engystomops randi, no English names noted.
  • An osprey (Pandion haliaetus carolinensis) at Raptor Recovery Nebraska.
  • A larger striped swordtail butterfly (Graphium antheus) at the Audubon Insectarium in New Orleans.
  • Photo: A porcupine crab (Paralomis hystrix) at SeaWorld San Diego.
  • Photo: A golden striped salamander (Chioglossa lusitanica) at the Biodiversity Hall of Natural History and Science Museum.
  • Picture of Johnny the serval (Leptailurus serval) at the Lincoln Children's Zoo.
  • Photo: A juvenile Trinidad olive tarantula (Neoholothele incei) at the Moscow Zoo.
  • A devil's flower mantis (Idolomantis diabolica) at the Omaha Henry Doorly Zoo, Omaha, Nebraska.
  • A critically endangered (IUCN) and federally endangered Sumatran tiger (Panthera tigris sumatrae).
  • Photo: Chattering lory (Lorius garrulus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A critically endangered starry sturgeon (Acipenser stellatus) at the Great Lakes Aquarium in Minnesota.
  • A Madagascar rain frog (Scaphiophryne madagascariensis) at the Omaha Zoo.
  • Photo: A scarlet shiner (Lythrurus fasciolaris) from North Fork Creek, Bedford County, Tennessee.
  • A hand raised, golden-breasted starling (Lamprotornis regius) named Buddy at Zoo Atlanta.
  • Photo: Banded fire salamander (Salamandra salamandra gallaica) at Graham's Quinta dos Malvedos Vineyard.
  • A picture of a male blue-breasted quail (Synoicus chinensis) at the Budapest Zoo and Botanical Gardens in Hungary.
  • Picture of an endangered (IUCN) and federally endangered black-footed ferret (Mustela nigripes) Omaha's Henry Doorly Zoo.
  • Photo: A jewelled nawab (Polyura delphis) at Zoo Negara in Kuala Lumpur, Malaysia.
  • Critically endangered (IUCN) Chucky madtom (Noturus crypticus), one of only 14 specimens ever to be collected, at Conservation Fisheries, a native stream fish breeding center. This fish has not been listed due to lack of funding even though it is one of the rarest fish in North America.
  • Photo: A Syrian spadefoot toad (Pelobates syriacus) at WWT Slimbridge in England.
  • A picture of a red-spotted newt (Notophthalmus viridescens viridescens) in a juvenile or 'eft' stage, at Zoo Atlanta.
  • Picture of a vulnerable (IUCN) and federally endangered male Cabot's tragopan (Tragopan caboti) at Pheasant Heaven, a private pheasant breeding facility near Clinton, NC.
  • Photo: A red rock shrimp (Lysmata californica) at California Science Center in Los Angeles, California.
  • Danube crested newt (Triturus dobrogicus) at Alpenzoo in Innsbruck, Austria.
  • Photo: A male patas monkey (Erythrocebus patas patas) at Safari North in Brainerd, Minnesota.
  • Photo: Pharaoh eagle-owl (Bubo ascalaphus) at the Woodland Park Zoo. This bird's name is Buddy, a male, about five years old.
  • A venomous Eastern green mamba (Dendroaspis angusticeps) at Reptile Gardens near Rapid City, South Dakota.
  • Photo: A coast range fence lizard (Sceloporus occidentalis boucourtii) from Vandenberg Space Force Base in California.
  • Spiny-headed treefrog (Anotheca spinosa) from central America at Zoo Atlanta.
  • A picture of a Pearl Island boa constrictor, Boa imperator sabogae, at Phoenix Zoo.
  • An inland bearded Dragon (Pogona vitticeps) at the Singapore Zoo.
  • An endangered (IUCN) and federally endangered Eastern Pacific green sea turtle (Chelonia mydas).
  • Photo: A crested guan (Penelope purpurascens aequatorialis) at the Nispero Zoo.
  • A picture of a West African gaboon viper (Bitis rhinoceros) at Zoo Atlanta.
  • Photo: Atlantic canary (Serinus canaria) in Santa Cruz, Tenerife, Spain.
  • Photo: Plain tiger (Danaus chrysippus) at Malacca Butterfly and Reptile Sanctuary.
  • Picture of a fulvous whistling duck (Dendrocygna bicolor) at the Caldwell Zoo in Tyler, Texas.
  • Photo: Cockroach (Eublaberus marajoara) at the Moscow Zoo.
  • A critically endangered (IUCN) Indochinese box turtle (Cuora galbinifrons) at the Riverbanks Zoo.
  • Photo: A hill prairie spittlebug (Lepyronia gibbosa) photographed at Spring Creek Prairie Audubon Center near Denton, NE. This animal was originally collected from Bobcat Prairie near Denton, NE.
  • Photo: A central bright-eyed frog (Boophis rappiodes) from the Plzen Zoo in the Czech Republic.
  • Photo: A cushion sea star (Culcita novaeguineae) at Semirara Marine Hatchery Laboratory in the Philippines.
  • Photo: A female Northeastern spinytail iguana (Ctenosaura acanthura) at IguanaLand in Punta Gorda, Florida.
  • Golden pheasants (Chrysolophus pictus) at the Bramble Park Zoo.
  • Photo: Critically endangered Devils Hole pupfish (Cyprinodon diabolis) at Ash Meadows National Wildlife Refuge.
  • Photo: A Mississippi diamondback terrapin (Malaclemys terrapin pileata) at Turtle Island.
  • A Florida kingsnake (Lampropeltis brooksi) from a private collection
  • A picture of a rufous-sided towhee or Eastern towhee (Pipilo erythrophthalmus alleni) at Tall Timbers Research Station and Land Conservancy.
  • Picture of a vulnerable long-tailed duck or oldsquaw (Clangula hyemalis) at Patuxent Wildlife Research Center.
  • A white-breasted woodswallow (Artamus leucorynchus) at the Sedgwick County Zoo in Wichita, Kansas.
  • Bigmouth buffalo (Ictiobus cyprinellus) at Gavins Point National Fish Hatchery and Aquarium.
  • Photo: A texas raccoon, Procyon lotor fuscipes.
  • Picture of a Haldeman's shieldback katydid (Pediodectes haldemani) at the Dallas Zoo.
  • A picture of a critically endangered Edwards's pheasant (Lophura edwardsi) at the Berlin Zoo.
  • Photo: Malayan leaffish (Pristolepis fasciata) at Zoo Negara.
  • Photo: Critically endangered Giant Ibis (Thaumatibis gigantea) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • A female central longear sunfish (Lepomis megalotis megalotis) collected from Big Darby Creek near Circleville, OH.
  • Photo: Yellow-bibbed lory (Lorius chlorocercus) in Choussy, France.
  • Photo: Philippine cockatoo (Cacatua haematuropygia) at Le Parc des Oiseaux, a bird park in the town of Villars Les Dombes, France.
  • Photo: An emperor flat rock lizard (Platysaurus guttatus rhodesianus) at the Safari Land Pet Store.
  • Photo: A cobalt-winged parakeet (Brotogeris cyanoptera cyanoptera) at Parque de las Leyendas in Lima, Peru.
  • Picture of two South American Waxy Tree Frogs (Phyllomedusa hypochondrialis) at the Houston Zoo.
  • Picture of an endangered (IUCN) and federally endangered horned guan (Oreophasis derbianus) at the Saint Louis Zoo.
  • Photo: Slate pencil urchin (Eucidaris thouarsii) at Aquarium of the Pacific in Long Beach, CA.
  • Photo: An endangered lowland anoa (Bubalus depressicornis) at Taman Safari in Bogor, West Java, Indonesia.
  • Photo: Western corn rootworm beetle (Diabrotica virgifera virgifera) at the University of Florida at Gainesville.
  • A picture of a male (front) and female brown-headed cowbird (Molothrus ater ater) in Fort Hood, Texas.
  • Photo: A male lineated kalij pheasant (Lophura leucomelanos lineata) at Redmon Aviaries.
  • Photo: A male brown-throated sunbird (Anthreptes malacensis malacensis) from a private collection in Indonesia.
  • Photo: A variable lampeye (Procatopus similis) at Aquarium Berlin, in Berlin, Germany.
  • Photo: An Australian huntsman spider (Holoconia insignis) at Aquazoo Loebbecke Museum in Dusseldorf, Germany.
  • Photo: A Grand Cayman blue iguana (Cyclura nubila lewisi) at the San Diego Zoo.
  • Photo: A female red grouse (Lagopus muticus scotica) at a private collection.
  • An endangered Hermon Mountain viper (Vipera bornmuelleri) at the St. Louis Zoo.
  • Photo: A spiny-cheek crayfish (Faxonius limosus) at Petra Aqua.
  • A bull trout (Salvelinus confluentus) from Bighorn Creek, part of the Kootenay River system. (IUCN: Vulnerable; US: Federally threatened)
  • A Northern red-billed hornbill (Tockus erythrorhynchus erythrorhynchus) at Omaha’s Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Photo: A common Madagascar skink (Madascincus cf. melanopleura) at the Plzen Zoo.
  • Photo: A map turtle (Graptemys geographica) at the Saint Louis Zoo.
  • Picture of April, a little corella (Cacatua sanguinea) at Alabama Gulf Coast Zoo.
  • Photo: An endangered female Darwin’s frog (Rhinoderma darwinii) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • A picture of a groundhog (Marmota monax bunkeri).
  • Canal zone treefrog (Hypsiboas rufitelus) at Zoo Atlanta.
  • A picture of a male lesser nighthawk (Chordeiles acutipennis texensis) at Rogers Wildlife Rehabilitation Center.
  • Photo: Mountain hare (Lepus timidus) at the Moscow Zoo.
  • Photo: A Pacific common seal, Phoca vitulina richardsi, at the Blank Park Zoo in Des Moines, Iowa.
  • A picture of a Virginia rail (Rallus limicola limicola) from of Nebraska Wildlife Rehab of Omaha, NE.
  • Picture of a Heck's grass finch (Poephila acuticauda hecki) from a private collection.
  • Picture of a pajama cardinalfish (Sphaeramia nematoptera) at Omaha's Henry Doorly Zoo and Aquarium.
  • Mount Lyell salamander (Hydromantes platycephalus) caught in the wild at Sixty Lake Basin of Kings Canyon National Park, California.
  • Photo: A speckled chachalaca (Ortalis guttata subaffinis) at BioParque do Rio.
  • Picture of critically endangered (IUCN) and federally endangered gharials (Gavialis gangeticus) at the Kukrail Gharial and Turtle Rehabilitation Centre in Lucknow, India.
  • Picture of a Danube crested newt (Triturus dobrogicus) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: Pemba flying fox (Pteropus voeltzkowi) at the Phoenix Zoo. This species is listed as Vulnerable according to IUCN.
  • Photo: A juvenile male shock-headed capuchin (Cebus cuscinus) named Leandro photographed at Amazon Shelter, a wildlife rescue, rehabilitation and release center in Tambopata, Peru.
  • Photo: A female northern turkey vulture (Cathartes aura septentrionalis) at Raptor Conservation Alliance in Elmwood, Nebraska.
  • A picture of a spotted dove (Spilopelia chinensis tigrina) at the Plzen Zoo.
  • Photo: A scorpion mud turtle (Kinosternon scorpiodes) at the Chapultepec Zoo in Mexico City.
  • A picture of a gilded barbet (Capito auratus punctatus) at the National Aviary breeding center in Palmar, Colombia.
  • A Sandhill crane (Antigone canadensis tabida) at the Sutton Avian Research Center.
  • spotted leaf-toed gecko (Hemidactylus prashadi) from a private collection.
  • Picture of Nabire, a Northern white rhinoceros (Ceratotherium simum cottoni)
  • A male Eurasian blackcap (Sylvia atricapilla) at the Environmental Education Center of the Ribeiras de Gaia.
  • Photo: Alaska Skate (Bathyraja parmifera) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A banded caecilian (Gymnopis multiplicata) at Omaha's Henry Doorly Zoo.
  • Picture of a snow goose (Chen caerulescens) in blue phase.
  • A European long-nosed viper (Vipera ammodytes ammodytes) at the St. Louis Zoo.
  • Photo: Vulnerable European wisent (Bison bonasus) at the Madrid Zoo.
  • Photo: An orange-bellied Senegal parrot (Poicephalus senegalus versteri) at Tierpark Chemnitz in Chemnitz, Germany.
  • Picture of a golden topminnow (Fundulus chrysotus) at the US Geological Survey Southeast Science Center.
  • Picture of a golden spiny-tailed gecko (Strophurus taenicauda) at the LA Zoo.
  • Photo: Surinam cockroaches (Pycnoscelus surinamensis) at the Urban Entomology Lab at the University of Florida at Gainesville.
  • Photo: A toad crab (Hyas coarctatus) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of an endangered (IUCN) and federally endangered black-footed ferret (Mustela nigripes) at the Cheyenne Mountain Zoo.
  • Picture of a Yellow-rumped cacique (Cacicus cela) at Tracy Aviary.
  • Photo: A black-headed night monkey (Aotus nigriceps) at Fundacao Jardim Zoologico de Brasilia.
  • Three-toed box turtle, Terrapene carolina triunguis, at the Sedgwick County Zoo.
  • A ruin lizard (Podarcis sicula) at the Sedgwick County Zoo in Wichita, Kansas.
  • Picture of a Uinta ground squirrel (Urocitellus armatus) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: South American lungfish (Lepidosiren paradoxa) at Moscow Zoo.
  • Photo: Trinidad dwarf tiger, Cyriocosmus elegans, at the Moscow Zoo.
  • Picture of a mantis shrimp (Squilla empusa) at Gulf Specimen Marine Lab and Aquarium.
  • A female North American porcupine (Erethizon dorsatum bruneri) at the Great Plains Zoo.
  • Photo: Yellow-spotted tropical night lizard (Lepidophyma flavimaculatum) from a private collection.
  • Photo: A critically endangered, male Walden's hornbill, Rhabdotorrhinus waldeni, at Talarak Foundation.
  • Photo: A Borneo splash frog (Staurois parvus) at Tierpark Berlin in Germany.
  • An emerald tree monitor (Varanus prasinus) at the Omaha Zoo.
  • A month-old hourglass treefrog tadpole (Dendropsophus or Hyla ebracatta) at the Henry Vilas Park Zoo.
  • Rubber boa (Charina bottae) at the Tulsa Zoo.
  • Photo: A Turkmenistan sand boa (Eryx miliaris miliaris) at Prague Zoo in Prague, Czech Republic.
  • A picture of a mourning sierra finch (Rhopospina fruticeti fruticeti) at Unidad de Rehabilitación de Fauna Silvestre of the Buin Zoo.
  • Photo: An Alaska skate (Bathyraja parmifera) at the Alaska SeaLife Center.
  • Picture of a vulnerable (IUCN) and federally threatened Florida scrub jay (Aphelocoma coerulescens).
  • Photo: A Mediterranean worm lizard (Blanus cinereus) from a private collection in Billerbeck, Germany.
  • A picture of a neotropical cormorant (Nannopterum brasilianus brasilianus) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Photo: A sand dollar (Echinodiscus bisperforatus) from the Gulf of Oman.
  • Picture of an endangered Horned marsupial tree frog (Gastrotheca cornuta) at the El Valle Amphibian Conservation Center (EVACC).
  • A captive, five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea. (IUCN: Vulnerable)
  • Photo: Baja mountain kingsnake (Lampropeltis zonata agalma) at the Arizona-Sonora Desert Museum.
  • Photo: Haitian brown tarantula (Phormictopus atrichomatus) at the Toronto Zoo.
  • A picture of a critically endangered yellow-headed temple turtle (Heosemys annandalii) at the Houston Zoo in Texas.
  • An aboreal alligator lizard (Abronia graminea) at the San Antonio Zoo. (IUCN: Endangered)
  • Picture of a Swainson's thrush (Catharus ustulatus), at St. Francis Wildlife Association, a wildlife rescue center near Quincy, Florida.
  • Photo: Grecian shoemaker (Catonephele numilia) at Butterfly Pavilion in Westminster, Colorado.
  • Photo: Yellow faced Amazon, Alipiopsitta xanthops, at Loro Parque Fundacion.
  • A splendid leaf frog (Cruziohyla sylviae) at the National Aquarium in Baltimore.
  • A picture of a common gull (Larus canus canus) at Lundi Farm in Verl, Germany.
  • Great billed parrot (Tanygnathus megalorynchos) at Loro Parque Fundacion.
  • Picture of monarch butterflies (Danaus plexippus) from Sierra Chincua, Mexico.
  • Picture of a Texas giant centipede (Scolopendra heros castaneiceps) at the Gladys Porter Zoo in Brownsville, Texas.
  • Black crocodile newt (Tylototriton taliangensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • A northern treeshrew (Tupaia belangeri) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a yellow stingray (Urobatis jamaicensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • Picture of a red-tailed boa constrictor (Boa constrictor constrictor) at the Lincoln Children's Zoo.
  • Southern vested tamandua (Tamandua tetradactyla straminea) at Tampa’s Lowry Park Zoo.
  • Photo: A New Guinea blue-tongued skink (Tiliqua gigas) at the Nashville Zoo in Nashville, Tennessee.
  • Photo: Common emigrant or lemon emigrant (Catopsilia pomona) at Melbourne Zoo.
  • Photo: A barred dove (Geopelia maugei) at the Plzen Zoo.
  • Photo: Chinese cave gecko (Goniurosaurus hainanensis) at Loro Parque.
  • Photo: A young, female Sherman’s fox squirrel (Sciurus niger shermani) at the Florida Wild Mammal Association.
  • Photo: European legless lizard (Pseudopus apodus thracius) at Parco Natura Viva.
  • Photo: A collared raven (Corvus albicollis) at Reptile Gardens.
  • Picture of a male mulga parrot (Psephotellus varius) at Sylvan Heights Bird Park. This species was previously Psephotus varius.
  • Picture of a Mississippi diamondback terrapin (Malaclemys terrapin) at the Estuarium in Dauphin Island, AL.
  • A picture of a spectacled cobra (Naja naja) at Reptile Gardens.
  • A pair of giant thorny stick insects (Trachyaretaon carmelae) from the Plzen Zoo in the Czech Republic. These are from the Philippines, possibly from Babuyan Island.
  • Picture of marsh periwinkle (Littoraria irrorata) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Picture of a northern spiny soft-shelled turtle (Apalone spinifera spinifera) at the Oklahoma City Zoo.
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at the Antwerp Zoo (Zoo Antwerpen) in Antwerp, Belgium.
  • Photo: A Peruvian booby (Sula variegata) at Huachipa Zoo in Lima, Peru.
  • Photo: A pair of El Tambo marsupial frogs (Gastrotheca elicioi) at Centro Jambatu in Quito, Ecuador.
  • Photo: Skimmer dragonfly (Sympetrum sp.) at Monticello Center in Italy.
  • A picture of a mallard duckling (Anas platyrhynchos platyrhynchos) at Wildlife Rescue Team Inc. in Lincoln, Nebraska.
  • Photo: A green-and-black poison dart frog (Dendrobates auratus) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A male and female Philippine walking stick (Lonchodes philippinicus) at Zoo Plzen in the Czech Republic.
  • Photo: A Pacific litter frog (Craugastor stejnegerianus) from the wild near the town of La Libia, Costa Rica.
  • Photo: A male Wadi racer (Platyceps rhodorachis) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.
  • A picture of a critically endangered four-eyed turtle (Sacalia quadriocellata) at the Tennessee Aquarium.
  • Photo: Loop-line bark moth (Ectropis bispinaria) at Lilydale High School in Australia.
  • Photo: A Wagner's gerbil (Gerbillus dasyurus) at the Plzen Zoo in the Czech Republic.
  • Photo: Rainforest Snail (Hadra webbi) at Melbourne Zoo.
  • Photo: Black billed Amazon, Amazona agilis, at Loro Parque Fundacion.
  • Picture of a coastal rosy boa (Lichanura trivirgata roseofusca) at the LA Zoo.
  • A picture of a critically endangered Burmese big-headed turtle (Platysternon megacephalum peguense) at Turtle Island in Graz, Austria.
  • Photo: A female Philippine slow loris (Nycticebus menagensis) at Taman Safari Prigen in Prigen, Indonesia.
  • Picture of a vulnerable Philippine sailfin lizard (Hydrosaurus pustulatus) at the Omaha Henry Doorly Zoo.
  • Picture of an endangered female Southern yellow-cheeked gibbon (Nomascus gabriellae) at the Singapore Zoo.
  • A long-toed salamander (Ambystoma macrodactylum) at the Sunriver Nature Center, Deschutes County, Oregon.
  • A larva and a pupa of the European corn borer (Ostrinia nubilalis) at Spring Creek Prairie near Denton, Nebraska.
  • Picture of a helmeted iguana (Corytophanes cristatus) at the Dallas World Aquarium.
  • El Segundo flower-loving fly (Rhaphiomidas terminatus terminatus). This insect was thought to be extinct since the end of the 1960s but a small remnant population of less than 100 individuals was discovered in the early 2000s.
  • Photo: A pair of collared peccaries (Pecari tajacu crusnigrum) at Centro de Rescate Las Pumas in Cañas, Costa Rica.
  • Photo: Gumleaf Grasshopper (Goniaea australasiae) from the Melbourne Museum
  • Photo: A Spanish hogfish (Bodianus rufus) at Shark Reef Aquarium at Mandalay Bay, Las Vegas, NV.
  • A picture of a painted buttonquail (Turnix varius varius) at the Healesville Sanctuary.
  • Photo: Japanese tree frog (Hyla japonica) at the Moscow Zoo.
  • Photo: A critically endangered Javan slow loris (Nycticebus javanicus) at Night Safari, part of Wildlife Reserves Singapore.
  • Photo: A laced moray eel (Gymnothorax favagineus) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: Two Hartmann's mountain zebras (Equus zebra hartmannae), mother and baby, at Hogle Zoo. This species is listed as vulnerable by IUCN. The mother’s name is Ziva and she is 7 years old here.
  • Photo: A yellowhead jawfish (Opistognathus aurifrons) at the Audubon Aquarium of the Americas.
  • Photo: A long-tailed porcupine (Trichys fasciculata) at Night Safari, part of Wildlife Reserves Singapore.
  • Photo: Harperella (Ptilimnium nodosum) a federally endangered plant that is native to wetlands on the Atlantic and Gulf Coasts.
  • Photo: A Cumberland elimia (Elimia edgariana) from North Fork Creek, Tennessee.
  • A centipede (Scolopendra viridis) at the Archbold Biological Station.
  • Photo: A Barusan shama (Copsychus malabaricus cf. melanurus) at the Prigen Conservation Breeding Ark in Indonesia.
  • Photo: A Bonelli’s eagle (Aquila fasciata fasciata) at Sia, the Comanche Nation Ethno-Ornithological Initiative.
  • Photo: A banded rock lizard (Petrosaurus mearnsi) at the Plzen Zoo in the Czech Republic.
  • Picture of a female white-faced ibis (Plegadis chihi) at Tracy Aviary.
  • Photo: Changeable hawk-eagle (Nisaetus cirrhatus limnaeetus) at ACCB in Siem Reap, Cambodia.
  • Photo: A black buffalo (Ictiobus niger) from the Duck River in Tennessee.
  • Photo: A smooth-headed alligator lizard (Gerrhonotus ophiurus) from a private collection in Billerbeck, Germany.
  • Photo: Amphipod (Gammarus sp.) at Butterfly Pavilion.
  • Photo: A male brown eared pheasant (Crossoptilon mantchuricum) in Somerset County, England.
  • Photo: A critically endangered hawksbill sea turtle (Eretmochelys imbricata bissa) at Semirara Marine Hatchery Laboratory in the Philippines.
  • Photo: A critically endangered Hainan three-striped box turtle (Cuora trifasciata luteocephala) at the Turtle Survival Center.
  • Photo: Two female, federally endangered Northern tidewater goby (Eucyclogobius newberryi) from Vandenberg Space Force Base in California.
  • Picture of a chestnut cowrie (Neobernaya spadicea) at the REEF, at the University of California, Santa Barbara.
  • Photo: An endangered purple naped lory (Lorius domicella) at the Plzen Zoo.
  • A humpback turretfish (Tetrosomus gibbossu) at Pure Aquariums.
  • Photo: A Northern Ceylonese slender loris (Loris lydekkerianus nordicus) named Kumar from the Memphis Zoo in Tennessee.
  • Photo: A Tokaren pit viper (Trimerasurus tokarensis) at the St. Louis Zoo.
  • Photo: Loggerhead sponge, Spheciospongia vesparia, at Gulf Specimen Marine Lab and Aquarium.
  • A pair of Kootenai River white sturgeon (Acipenser transmontanus) at the Kootenai Tribal Hatchery. (US: Endangered)
  • A northern spring salamander (Gyrinophilus porphyriticus) from a private collection.
  • Photo: An alpine marmot (Marmota marmota) at the Berlin Zoological Garden in Berlin, Germany.
  • Picture of an orange spine surgeonfish (Naso lituratus) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: Four congo tetra (Phenacogrammus interruptus) at Pure Aquariums in Lincoln, Nebraska.
  • Photo: A feathered cone (Conus pennaceus) from the Gulf of Oman.
  • Two critically endangered Celebes crested macaques (Macaca nigra) at Omaha's Henry Doorly Zoo and Aquarium in Nebraska.
  • Photo: A critically endangered pygmy sculpin (Cottus paulus) at the Fish Biodiversity Lab, Auburn University, Auburn, Alabama.
  • Photo: Blue color phase of the red swamp crayfish (Procambarus clarkii) at the Insectarium in New Orleans.
  • A federally endangered Plymouth red-bellied turtle (Pseudemys rubriventris) sometimes called the Plymouth red-bellied cooter, at the Buttonwood Park Zoo in New Bedford, Massachusetts. This was the first freshwater turtle species in the United States to be listed as endangered.
  • A leafcutter bee (Megachile parallela) photographed at a studio in Lincoln, NE.
  • Photo: An endangered Javan hawk-eagle (Nisaetus bartelsi) at Bali Bird Park in Indonesia.
  • Photo: A female termite hill gecko (Hemidactylus triedrus) at Josh’s Frogs in Michigan.
  • Photo: Southern citril (Crithagra hyposticta) in Santa Cruz, Tenerife, Spain.
  • Photo: An Indian red scorpion (Hottentotta tamulus) at Verve Biotech in Waverly, Nebraska.
  • A critically endangered (IUCN) and federally endangered Sumatran rhinoceros (Dicerorhinus sumatrensis sumatrensis) at the Cincinnati Zoo. Suci is one of only two in the United States and one of only 10 in captivity worldwide. Poaching is rampant for this species and fewer than 200 exist now in the wild. This animal was born at the Cincinnati Zoo in 2007. It's hoped that she can be bred and help the species cling to survival. The Sumatran rhino is considered one of the rarest mammals in the world.
  • Japanese pond turtle (Mauremys japonica) at the Tennessee Aquarium.
  • Photo: Savanna dormouse (Graphiurus parvus) at the Plzen Zoo in the Czech Republic.
  • Oriental whipsnake (Ahaetulla prasina prasina) at Singapore Zoo.
  • Sicklefin redhorse fish (Moxostoma sp. "sicklefin redhorse") a rare and undescribed species of redhorse found only in the Blue Ridge section of the Little Tennessee River and Hiwassee River. Photographed at Conservation Fisheries, a breeding center for rare native stream fish.
  • A Clark's nutcracker (Nucifraga columbiana) at the School of Biological Sciences at the University of Nebraska-Lincoln. This and other corvid species are studied to learn how cognition evolved, how animals use cognitive abilities to solve problems in nature and how cognitive abilities can affect the evolutionary process.
  • Photo: An Axelrod’s cory (Corydoras axelrodi) at Zoo Plzeň in the Czech Republic.
  • A picture of two Tapir Valley treefrogs (Tlalocohyla celeste) from the Tapir Valley, Costa Rica.
  • A cruiser dragonfly naiad (Phyllomacromia sp.), aquatic insect from the Mount Gorongosa area of Gorongosa National Park.
  • A moth pupa (species unknown).
  • Picture of a red-throated parrotfinch (Erythrura psittacea) from a private collection in the Dominican Republic.
  • A black-chinned hummingbird (Archilochus alexandri) at the Brown Ranch, Texas.
  • Photo: A Burmese flapshell turtle (Lissemys scutata) at Turtle Island.
  • Photo: A female bird wrasse (Gomphosus varius) at SeaWorld San Diego.
  • Photo: A white-rumped shama (Kittacincla malabarica omissa) at Taman Mini Indonesia Indah.
  • A piping plover (Charadrius melodus). (US: Endangered)
  • Picture of a common goldeneye (Bucephala clangula) at Sylvan Heights Bird Park.
  • Photo: A critically endangered, male Javan bleeding toad (Leptophryne cruentata) at Taman Safari Bogor in Java, Indonesia.
  • Photo: Arizona skunk (Mephitis mephitis estor) at Southwest Wildlife Conservation Center.
  • Photo: A mimic poison frog (Ranitomeya imitator) at Josh’s Frogs in Owosso, Michigan.
  • Tiger-striped treefrog (Phyllomedusa tomopterna) at the National Aquarium in Baltimore.
  • A carolina anole (Anolis carolinensis) from Cape Canaveral Florida.
  • Photo: An Imperial urchin (Phyllacanthus imperialis) at the Oklahoma Aquarium.
  • Picture of a dwarf hawkfish or Falco's hawkfish (Cirrhitichthys falco) at Nebraska Aquatic Supply.
  • A picture of an Antilles pinktoe tarantula (Caribena versicolor) at the Omaha’s Henry Doorly Zoo.
  • Photo: A juvenile Florida Keys rat snake (Pantherophis alleghaniensis deckerti) from a private collection.
  • Photo: An elegant gecko (Stenodactylus sthenodactylus) at Josh’s Frogs in Michigan.
  • A pied imperial pigeon (Ducula bicolor) at Zoo Atlanta.
  • Photo: A Sechuran fox (Pseudalopex sechurae) at Parque Zoológico Huachipa in Lima, Peru.
  • Picture of a vulnerable lined seahorse (Hippocampus erectus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Solomon Islands ground skink (Eugongylus albofasciolatus) at the Detroit Zoo.
  • Photo: A Chukar partridge (Alectoris chukar cypriotes) at the Plzen Zoo.
  • Photo: A federally endangered key tree cactus (Pilosocereus robinii), a species found only in Key Largo.
  • Meadow fritillary (Boloria bellona) from Cross Lake, Minnesota.
  • Photo: An interior tree frog (Dendropsophus melanargyreus) at Josh’s Frogs in Michigan.
  • A Cope's treefrog (Hyla chrysoscelis) caught in the wild near Dunbar, Nebraska.
  • Photo: A grey-headed swamphen (Porphyrio poliocephalus seistanicus) photographed at Sheikh Butti Maktoum Wildlife in Dubai, United Arab Emirates.
  • Boulder darter (Etheostoma wapiti), a vulnerable (IUCN) and federally endangered species, at Conservation Fisheries, a native stream fish breeding center.
  • Picture of a North American ruddy duck (Oxyura jamaicensis jamaicensis) at the Columbus Zoo.
  • Photo: Southern festive amazon, Amazona festiva, at Loro Parque Fundacion.
  • A Mississippi mud turtle (Kinosternon subrubrum hippocrepis) at Millard's Turtle Farm, Birmingham, Iowa.
  • Photo: A Turner’s thick-toed gecko (Chondrodactylus turneri) at Tierpark Berlin in Germany.
  • A northern red fan parrot (Deroptyus accipitrinus accipitrinus) at the Houston Zoo.
  • Photo: Slipper coral (Polyphyllia sp.) at Butterfly Pavilion.
  • A Texas cave salamander (Eurycea neotenes) at the Detroit Zoo, Detroit, Michigan. (IUCN: Vulnerable)
  • Photo: Boulder brain coral (Colpophyllia natans) at Mote Tropical Research Laboratory.
  • Photo: An Eastern diamondback rattlesnake (Crotalus adamantaeus) at Reptile Gardens.
  • The federally endangered Iowa Pleistocene Snail (Discus macclintocki). This is a relict from the last ice age, some 400,000 years ago. It lives in cold air vents on 37 different hillsides in Iowa (and one in Illinois) and survives only in the cold air that blows past underground ice and out of the cracks in limestone cliffs.
  • Photo: A Mozambique spitting cobra (Naja mossambica) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • Picture of a brown-throated sloth (Bradypus variegatus) at the PanAmerican Conservation Association in Gamboa, Panama.
  • Photo: A Chilean tinamou (Nothoprocta perdicaria) at Lundi Farm in Verl, Germany.
  • A picture of a young western gray squirrel (Sciurus griseus griseus) at Wildlife Images, an animal rehabilitation center near Merlin, Oregon.
  • Picture of a milky eagle owl (Bubo lacteus) at Zoo Atlanta.
  • Photo: A scarlet shiner (Lythrurus fasciolaris) at Conservation Fisheries in Knoxville, Tennessee.
  • Photo: A Brown roofed turtle (Pangshura smithii smithii) from a private collection.
  • A critically endangered Axolotl (Ambystoma mexicanum) at the Detroit Zoo, Detroit, Michigan.
  • Photo: A vulnerable Madagascar ground gecko (Paroedura vazimba) at the Plzen Zoo.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Photo: A king vulture (Sarcorhamphus papa) at the Great Plains Zoo.
  • Photo: A Colorado chipmunk (Neotamias quadrivittatus) at Nebraska Wildlife Rehab.
  • A western harris' hawk (Parabuteo unicinctus superior) named Hudson at The Living Desert.
  • Photo: Common loon baby (Gavia immer) at the Wildlife Rehabilitation Center of Minnesota.
  • Photo: A grey-headed goldfinch (Carduelis carduelis subulata) at Zoo Plzeň.
  • Photo: A sea raven (Hemitripterus americanus) yellow color phase, at the Maine State Aquarium in West Boothbay, ME. These animals are most often greenish in color.
  • Photo: A water thick-knee (Burhinus vermiculatus) at Wildlife World Zoo, Aquarium & Safari Park in Litchfield Park, Arizona.
  • Photo: Caterpillar of orange lacewing (Cethosia penthesilea) at Melbourne Zoo.
  • Photo: Horseface blenny (Ophioblennius steindachneri) photographed at Downtown Aquarium in Denver, Colorado.
  • Picture of critically endangered (IUCN) and federally endangered Edwards's pheasants (Lophura edwardsi) at the Sunset Zoo.
  • Red-necked wallaby (Macropus rufogriseus) at the Lincoln Children's Zoo.
  • Mexican tiger rat snake (Spilotes pullatus mexicanus) at the Omaha Zoo.
  • Photo: An Eastern eyed click beetle (Alaus oculatus) at the Audubon Insectarium, part of the Audubon Nature Institute.
  • A federally endangered timber wolf (Canis lupus) named Kenai at the New York State Zoo.
  • Photo: A yellowfin chromis (Chromis xanthopterygia) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • Photo: Guatemalan amazon, also called Costa Rican mealy amazon, Amazona guatemalae virenticeps, at Loro Parque Fundacion.
  • A millipede (Diplopoda sp.).
  • A female downy woodpecker (Dryobates pubescens pubescens) at Rogers Wildlife Rehabilitation Center.
  • Western pygmy rattlesnake (Sistrurus miliarius streckeri) at the Tulsa Zoo.
  • A picture of a banded rail (Gallirallus philippensis) at Plzen Zoo in the Czech Republic.
  • Picture of a federally endangered jaguarundi (Puma yagouaroundi) at Bear Creek Feline Center.
  • Photo: An aplomado falcon (Falco femoralis femoralis) at the El Huayco Research and Raptor Breeding Center in Lima, Peru.
  • Photo: A grapevine looper (Eulithis sp.) from the wild near Lincoln, Nebraska.
  • Photo: Orange-barred sulphur (Phoebis philea philea) in Gamboa, Panama.
  • Photo: A scarlet-chested sunbird (Chalcomitra senegalensis) at the Zoological Society of London.
  • Photo: A Northwestern salamander (Ambystoma gracile) at A Rocha Brooksdale Environmental Center in Surrey, BC. This is the Neotenic form (aquatic all it's life) of the Northwestern salamander.
  • Photo: An endangered finelined pocketbook (Hamiota altilis) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Picture of a vulnerable wetapunga (Deinacrida heteracantha) at the Auckland Zoo.
  • Photo: A Mexican black tailed rattlesnake (Crotalus nigriscens) at Reptile Gardens.
  • Photo: A collared sunbird (Hedydipna collaris zuluensis) from Chitengo Camp in Gorongosa National Park.
  • Picture of a Himalayan wolf (Canis himalayensis) at the Padmaja Naidu Himalayan Zoological Park, in Darjeeling, India.
  • Photo: A panel elimia (Elimia laqueata) from North Fork Creek, Tennessee.
  • Photo: Threadfin acara (Acarichthys heckelii) at the Dallas World Aquarium.
  • Photo: A blue dyeing poison arrow frog (Dendrobates tinctorius sipaliwini) at the Omaha Henry Doorly Zoo and Aquarium.
  • Picture of a male Mountain goat (Oreamnos americanus) at the Cheyenne Mountain Zoo.
  • Picture of a bruno morph of a strawberry poison frog (Oophaga pumilio) from a private collection.
  • Picture of a critically endangered narrow-headed softshell turtle (Chitra chitra) at the St. Louis Zoo.
  • Picture of a male and female pin-tailed whydah (Vidua macroura) at Sylvan Heights Waterfowl Park.
  • Photo: A pair of white-eyed giant leaf-tailed gecko (Uroplatus giganteus) at Riverbanks Zoo and Garden.
  • Photo: A Western smooth knob-tailed gecko (Nephrurus levis pilbarensis) from a private collection.
  • Picture of a Boyd's forest dragon (Hypsilurus boydii) at Wild Life Sydney Zoo.
  • Photo: Two torrent ducks (Merganetta armata armata) at Lundi Farm in Verl, Germany.
  • Photo: A Madagascar tree boa (Sanzinia volontany) at Prague Zoo.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • A white-crested laughing thrush (Garrulax leucolophus) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Photo: A Bransford’s litter frog (Craugastor bransfordii) from the Tapir Valley, Costa Rica.
  • Photo: A golden scorpionfish (Parascorpaena aurita) at the Batu Secret Zoo in Batu, Indonesia.
  • Picture of a lanner falcon (Falco biarmicus) at Reptile Gardens.
  • Photo: A creeper mussel (Strophitus undulatus) at the Marion Conservation Aquaculture Center.
  • Photo: A warty rocksnail (Lithasia lima) from Cypress Creek, Alabama.
  • Photo: A Malayan pit viper (Calloselasma rhodostoma) at Taman Mini Indonesia Indah.
  • Photo: Black-billed cuckoo (Coccyzus erythropthalmus) at Bay Beach Wildlife Sanctuary.
  • Carpenter bee (Xylocopa virginica virginica) at the St. Louis Zoo.
  • A Clark's nutcracker (Nucifraga columbiana) at the University of Nebraska-Lincoln.
  • Photo: Baja California rat snake (Bogertophis rosaliae) at the LA Zoo.
  • Picture of a critically endangered (IUCN) and federally endangered female eastern black rhino (Diceros bicornis michaeli) named Imara at the Great Plains Zoo.
  • Photo: An endangered, female Bornean peacock-pheasant (Polyplectron schleiermacheri) at Waddesdon Manor Aviary, Waddesdon, England.
  • Photo: A tui parakeet (Brotogeris sanctithomae sanctithomae) at Parque de las Leyendas in Lima, Peru.
  • Photo: A male long-crested eagle (Lophaetus occipitalis) at World Bird Sanctuary.
  • Picture of an endangered white-headed duck (Oxyura leucocephala) at Sylvan Heights Bird Park.
  • Picture of a common squirrel monkey (Saimiri sciureus sciureus) named Chili at the Santa Fe College Teaching Zoo.
  • Photo: A gold nugget plecostomus (Baryancistrus xanthellus) at Aquazoo Loebbecke Museum in Dusseldorf, Germany.
  • Photo: Critically endangered Giant Ibis (Thaumatibis gigantea) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • A Common chuckwalla, Sauromalus ater, at the Plzen Zoo.
  • A picture of a federally endangered New Zealand pigeon (Hemiphaga novaeseelandiae novaeseelandiae) at the Auckland Zoo.
  • Photo: A male tiger swallowtail butterfly, Papilio glaucas.
  • The tail end of a Costa Rican jumping viper (Atropoides picadoi) at Zoo Atlanta.
  • Lun Lun the endangered (IUCN) and federally endangered giant panda (Ailuropoda melanoleuca) at Zoo Atlanta.
  • A picture of a cliff swallow (Petrochelidon pyrrhonota pyrrhonota) at Bay Beach Wildlife Sanctuary.
  • A North Indian muntjac (Muntiacus vaginalis vaginalis) at the Assam State Zoo cum Botanical Garden in Guwahati, Assam, India.
  • A female North American porcupine (Erethizon dorsatum bruneri) at the Great Plains Zoo.
  • Photo: An endangered crested capuchin named Milo (Sapajus robustus) at the Los Angeles Zoo.
  • Photo: Two bluehead chubs (Nocomis leptocephalus) at the Marion Conservation Aquaculture Center.
  • A picture of a groundhog (Marmota monax bunkeri).
  • Photo: A juvenile Peruvian spider monkey (Ateles chamek) photographed at Rainforest Awareness Rescue Education Center in Iquitos, Peru.
  • Photo: A pointed Campeloma snail (Campeloma sp.) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Photo: A payara tetra (Hydrolycus scomberoides) at the Great Lakes Aquarium in Duluth, Minnesota.
  • Photo: A banded sculpin (Cottus carolinae) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected Terrapin Creek, Cherokee County, AL.
  • Photo: A spotted towhee (Pipilo maculatus oregonus) at Portland Audubon Wildlife Care Center in Portland, Oregon.
  • Photo: A common spotted cuscus (Spilocuscus maculatus) at a private collection in Jakarta, Indonesia.
  • Photo: A grey-crowned Central American squirrel monkey (Saimiri oerstedii citrinellus) named Nacho at Rescue Center Costa Rica in Guacima, Alajuela, Costa Rica.
  • Picture of a pinktail triggerfish (Melichthys vidua) at Pure Aquariums.
  • A marbled newt (Triturus marmoratus) at the Houston Zoo.
  • A picture of a critically endangered male Baer's pochard (Aythya baeri) at the Plzen Zoo in Plzen, Czech Republic.
  • Photo: Malayan Cave Racer (Orthriophis taeniurus ridleyi) at the Singapore Zoo.
  • Thorny devil stick insects (Eurycantha calcarata) from the Plzen Zoo in the Czech Republic.
  • Photo: A Mexican jumping pitviper (Metlapilcoatlus nummifer) at Reptile Lagoon in Hamer, South Carolina.
  • Photo: A group of Indian eyed turtles (Morenia petersi) at Turtle Island
  • A picture of a Hispaniolan parakeet (Psittacara chloropterus chloropterus) at Parque Zoologico Nacional, a zoo in Santo Domingo, Dominican Republic.
  • Photo: A t-bar cichlid (Amatitlania sajica) at Zoo Leipzig in Germany.
  • Photo: A Botta’s pocket gopher (Thomomys bottae pervagus) at the Wildlife Center of New Mexico.
  • Photo: Toadhead turtle or gibba turtle (Mesoclemmys gibba) at Piscilago Zoo in Bogota, Colombia.
  • Picture of an endangered (IUCN) and federally endangered black-footed ferret (Mustela nigripes) at the Cheyenne Mountain Zoo.
  • Photo: A snapping turtle (Chelydra serpentina) at Scaly Dave's Herp Shack in Manhattan, KS.
  • A picture of a female (left) and male brown-headed cowbird (Molothrus ater ater) in Fort Hood, Texas.
  • An endangered polka-dot poison frog (Oophaga arborea) from a private collection.
  • A picture of a McCosker's flasher-wrasse (Paracheilinus mccoskeri) at Pure Aquariums.
  • Photo: An endangered Decary's leaf chameleon (Brookesia decaryi) from a private collection.
  • Picture of a least sandpiper (Calidris minutilla) at the Monterey Bay Aquarium.
  • Photo: A thick-billed ground pigeon (Trugon terrestris) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A blue winged pitta (Pitta moluccensis) at the Jurong Bird Park.
  • A picture of a cichlid (Chromidotilapia melaniae) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: An endangered Deppe’s arboreal alligator lizard (Abronia deppii) from a private collection in Billerbeck, Germany.
  • Picture of American black ducks (Anas rubripes) at the Sylvan Heights Bird Park.
  • Photo: Emperor goose (Anser canagicus) at Monticello Center in Italy.
  • Karsten's girdled lizard (Zonosaurus karsteni) at the Omaha Zoo.
  • Picture of a Chilean teal (Anas flavirostris flavirostris) at the John Ball Zoo in Grand Rapids, Michigan.
  • Photo: Four Gulf spike mussel (Elliptio pullata) from the Choctawhatchee River drainage photographed with the USFWS. These animals were collected in Bruce Creek, Walton County, FL.
  • Photo: Inverted jellyfish (Cassiopea xamachana) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Photo: A group of Indian eyed turtles (Morenia petersi) at Turtle Island
  • Picture of a federally threatened, Canada lynx (Lynx canadensis) named Yukon at the Point Defiance Zoo.
  • Photo: A female nursery web spider (Pisaurina mira) from the University of Nebraska-Lincoln.
  • Photo: A Taylor’s sea hare (Phyllaplysia taylori) from San Francisco Bay. Photographed at the East Bay Regional Parks Mobile Education Program.
  • Photo: Changeable hawk-eagle (Nisaetus cirrhatus limnaeetus) at ACCB in Siem Reap, Cambodia.
  • Picture of a Reichenow's helmeted guineafowl (Numida meleagris reichenowi) at Sylvan Heights Bird Park.
  • Photo: A smooth trunkfish (Lactophrys triqueter) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Picture of a Burton's legless lizard (Lialis burtonis) at the Cheyenne Mountain Zoo in Colorado Springs, CO.
  • Picture of an Atlantic midshipman, Porichthys plectrodon, at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: A brown trout (Salmo trutta) at the Schramm Education Center near Gretna, NE.
  • Picture of an endangered (IUCN) and federally endangered golden snub-nosed monkeys (Rhinopithecus roxellana) at Ocean Park.
  • A western Mojave glossy snake (Arizona elegans candida) from a private collection.
  • Canal zone treefrog (Hypsiboas rufitelus) at Zoo Atlanta.
  • Imitating or mimic poison dart frog (Ranitameya imitator) at the Baltimore Aquarium. This animal is a descendant of the few remaining animals in El Cope National Park in Panama, where the chytrid fungus may wipe out the animal at any time.
  • Photo: A fantail darter (Etheostoma flabellare) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Photo: A Williams' side-necked turtle (Phrynops williamsi) from a private collection.
  • Northern Spotted Owl (Strix occidentalis caurina) at the University of California, Davis California Raptor Center.
  • Boulder darter (Etheostoma wapiti), a vulnerable (IUCN) and federally endangered species, at Conservation Fisheries, a native stream fish breeding center.
  • Photo: Gunther's catfish (Horabagrus brachysoma) at Zoo Negara.
  • A picture of a gulf black sea bass (Centropristis striata) photographed at Gulf Specimen Marine Lab and Aquarium. This is from the Gulf of Mexico population.
  • Picture of a critically endangered Archey's frog (Leiopelma archeyi) at the Auckland Zoo.
  • Photo: A mobile logperch (Percina kathae) from the Conasauga River.
  • Photo: A juvenile hogfish (Lachnolaimus maximus) at Gulf Specimen Marine Lab.
  • Picture of a ribbon snake (Thamnophis sauritus) at the New York State Zoo in Watertown, NY.
  • A great grey owl (Strix nebulosa nebulosa) at the New York State Zoo.
  • Picture of a vulnerable (IUCN) and federally endangered Western tragopan (Tragopan melanocephalus) at Himalyan Nature Park in Kufri, India.
  • Hairy bush viper (Atheris hispida) at Zoo Atlanta.
  • Photo: A spectacled owl (Pulsatrix perspicillata perspicillata) at Cetas-IBAMA, a wildlife rehab center in Manaus, Brazil.
  • Photo: Smooth-fronted caiman (Paleosuchus trigonatus) from a private collection.
  • Photo: A longhorn beetle (Eurysthea cribripennis) from the wild, photographed at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • Photo: East African spring hare (Pedetes surdaster) at the Plzen Zoo in the Czech Republic.
  • Picture of a federally endangered black caiman (Melanosuchus niger) at the St. Augustine Alligator Farm.
  • Photo: Auriga butterflyfish (Chaetodon auriga) from Gulf Specimen Marine Laboratories.
  • Photo: A grey-crowned Central American squirrel monkey (Saimiri oerstedii citrinellus) named Nacho at Rescue Center Costa Rica in Guacima, Alajuela, Costa Rica.
  • Photo: The larvae form of an Eastern eyed click beetle (Alaus oculatus) at the Audubon Insectarium, part of the Audubon Nature Institute.
  • Photo: A white-throated kingfisher (Halcyon smyrnensis smyrnensis) at Wildlife Hospital of Israel & Ramat Gan Safari Park, in Ramat Gan, Israel.
  • Photo: A Namaqua day gecko (Rhoptropella ocellata) at the Plzen Zoo in the Czech Republic.
  • Photo: Tungara frog (Engystomops pustulosus) from the wild in Gamboa, Panama.
  • Photo: Mabu the giant armadillo (Priodontes maximus) at Zoo Brasilia.
  • Photo: Veery (Catharus fuscescens) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Photo: A male Jones’s silver pheasant (Lophura nycthemera jonesi) at a private collection.
  • Picture of a desert lancehead (Bothrops pictus) at the Dallas Zoo.
  • Photo: A female termite hill gecko (Hemidactylus triedrus) at Josh’s Frogs in Michigan.
  • Picture of a ribbon snake (Thamnophis sauritus) at the New York State Zoo in Watertown, NY.
  • An Aruba Island rattlesnake (Crotalus durissus unicolor) at the Saint Louis Zoo. It is one of the only rattlesnake taxon to benefit from a true captive breeding program worldwide. It is nearly extinct on Aruba Island where it is endemic.
  • Threadfin cardinalfish (Zoramia leptacantha) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: Ash Meadows speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge near Pahrump, NV.
  • Two East African spiny-tailed lizards (Cordylus tropidosternum) at the Chattanooga Zoo.
  • Photo: A male indigo bunting (Passerina cyanea) in Hudson, WI.
  • Photo: A chapa bug-eyed frog (Theloderma bicolor) at the Bristol Zoo.
  • An endangered golden lion tamarin (Leontopithecus rosalia rosalia) at the Cheyenne Mountain Zoo.
  • A vulnerable Sonoyta mud turtle (Kinosternon sonoriense longifemorale) at the Phoenix Zoo.
  • Photo: Indian wolf (Canis lupus pallipes) at the National Zoological Park New Delhi in New Delhi, India.
  • Photo: A female Malay cruiser (Vindula dejone) at the Butterfly Pavilion in Westminster, Colorado.
  • Photo: A round-backed millipede (Tonkinbolus caudulanus), left, and a bumblebee millipede (Anadenobolus monilicornis), right, at the Berlin Zoological Garden in Berlin, Germany.
  • Photo: A solitary tinamou (Tinamus solitarius) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A fat-tailed scorpion (Hottentotta polystictus) at Verve Biotech in Waverly, Nebraska.
  • Photo: A burrowing owl (Athene cunicularia) at the Denver Zoo.
  • Toco toucan (Ramphastos toco) at the Henry Doorly Zoo and Aquarium.
  • Photo: A warty sea anemone, Bunodosoma cavernatum, at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Von der Decken's hornbill (Tockus deckeni) at Tampa's Lowry Park Zoo. The male has an orange beak, while the female has a black beak.
  • A red turban snail, Lithopoma gibberosa.
  • Picture of a twospot rasbora (Rasbora elegans) at the Virginia Aquarium.
  • Photo: An endangered Nile lechwe (Kobus megaceros) at the Dallas Zoo.
  • Photo: Chaco owl (Strix chacoensis) at Monticello Center in Italy.
  • Picture of a silkworm cocoon (Bombyx mori) at the St. Louis Zoo.
  • Picture of one-day-old black swans (Cygnus atratus) at Sylvan Heights Bird Park.
  • Picture of a white-lipped mud turtle (Kinosternon leucostomum postinguinale) at the Cali Zoo in Colombia.
  • Photo: A male true silver pheasant (Lophura nycthemera nycthemera) from a private collection.
  • A ferruginous hawk (Buteo regalis) at the Sutton Avian Research Center.
  • Photo: Red spectacled amazon, Amazona pretrei, at Loro Parque Fundacion.
  • Photo: A critically endangered Burmese Peacock softshell (Nilssonia formosa) at the Turtle Survival Center.
  • Photo: An endangered (IUCN) and federally endangered mountain yellow-legged frog (Rana muscosa) at the Vredenburg Lab of San Francisco State University in San Francisco, California.
  • Photo: An endangered moor macaque (Macaca maura) at Batu Secret Zoo and Eco Green Park in Batu, Indonesia.
  • A superb bird of paradise (Lophorina superba) displays iridescent chest feathers at the Houston Zoo.
  • A picture of a gray rat snake (Pantherophis spiloides) at the Estuarium in Dauphin Island, AL.
  • Photo: An endangered male crystal rainbowfish (Rheocles vatosoa) at the Plzen Zoo in the Czech Republic.
  • A picture of a juvenile pelagic cormorant (Urile pelagicus resplendens).
  • Black tailed prairie dog (Cynomys ludovicians) at the Sedgwick County Zoo.
  • A picture of a female common green bottle fly (Lucilia sericata) in Lincoln, Nebraska.
  • Photo: A Irian Jaya carpet python (Morelia spilota variegata) at Seattle Reptiles.
  • Photo: A male golden spiny mouse (Acomys russatus russatus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.
  • Sara, the endangered (IUCN) and federally endangered whooping crane (Grus americana), at the Audubon Center for Research of Endangered Species. This is an educational bird.
  • A picture of a critically endangered yellow-headed temple turtle (Heosemys annandalii) at the Houston Zoo in Texas.
  • Picture of a numata longwing (Heliconius numata) at the Saint Louis Zoo.
  • A vulnerable (IUCN) Tarahumara leopard frog (Lithobates tarahumarae) at the Arizona-Sonora Desert Museum.
  • A picture of a critically endangered big-headed turtle (Platysternon megacephalum megacephalum) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A yellowfin sole (Limanda aspera) at the Alaska SeaLife Center.
  • Photo: A pair of Arabian bustards (Ardeotis arabs) at the National Avian Research Center.
  • Photo: Cook Strait giant weta (Deinacrida rugosa) at Zealandia, a wildlife preserve in Wellington.
  • Picture of a female pink orchid mantis (Hymenopus coronatus) at the St. Louis Zoo.
  • A northern green frog (Rana clamitans melanota) near Watertown, NY.
  • Photo: A male Mindanao tarictic hornbill (Penelopides affinis affinis) in Choussy, France.
  • Photo: A white-winged black tyrant (Knipolegus aterrimus aterrimus) at at Museo De Historia Natural Alcide d'Orbigny, a natural history museum and rare amphibian breeding center in Chocabamba Bolivia.
  • Photo: A group of unidentified horse leeches (Haemopis sp.) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Photo: A meadow jumping mouse (Zapus hudsonius intermedius) at the Wildlife Rehab Center of Minnesota.
  • Photo: A Western marbled velvet gecko (Oedura fimbria) from a private collection.
  • Photo: A green-and-black poison dart frog (Dendrobates auratus) at Josh’s Frogs in Owosso, Michigan.
  • An endangered female white-crowned hornbill (Berenicornis comatus) at the Avilon Zoo.
  • A narrow-bridged musk turtle (Claudius angustatus) at the Chapultepec Zoo in Mexico City.
  • Mexican lance-headed rattlesnake (Crotalus polystictus) at the St. Louis Zoo.
  • Photo: A Southern leaf-tailed gecko (Phyllurus platurus) from a private collection.
  • Photo: A Balkan whip snake (Hierophis gemonensis) at Zagreb Zoo in Zagreb, Croatia.
  • A half-day-old hatchling leatherback turtle (Dermochelys coriacea) from Bioko Island. (IUCN: Critically Endangered, US: Endangered)
  • Picture of a federally endangered, female Neotropical river otter (Lontra longicaudis annectens) at the Summit Municipal Park in Gamboa, Panama.
  • Photo: A painted tree frog (Boana picturata) sits on a camera at Centro Jambatu in Quito, Ecuador.
  • Photo: A female green honeycreeper (Chlorophanes spiza) at the Miller Park Zoo in Bloomington, Illinois.
  • An eastern black-and-white colobus monkey (Colobus guereza) at the Columbus Zoo.
  • Photo: A Pilbara rock monitor (Varanus pilbarensis) at the Toledo Zoo.
  • Picture of a Ross's goose (Chen rossii).
  • A critically endangered (IUCN) and federally endangered California condor (Gymnogyps californianus) at the Phoenix Zoo.
  • Crested caracara (Caracara cheriway) at Tampa's Lowry Park Zoo.
  • Picture of a Garrido's crested anole (Anolis barbatus) from a private collection.
  • Photo: A Gordon's wildcat (Felis lybica gordoni) at Zoopark Zajezd.
  • Photo: A Jujube top snail (Calliostoma jujubinum) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Snail darter (Percina tanasi) at Conservation Fisheries.
  • Photo: From left, a female and male Barrow's goldeneye (Bucephala islandica) at Sylvan Heights Bird Park in Scotland Neck, North Carolina.
  • Photo: A bat falcon (Falco rufigularis petoensis) at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • Photo: A mountain peacock-pheasant, Polyplectron inopinatum, at the Blank Park Zoo in Des Moines, Iowa.
  • A Giant swallowtail butterfly (Papilio cresphontes) at the Lincoln Children's Zoo in Lincoln, Nebraska.
  • Big-headed rainfrog or big-headed robber frog (Craugastor megacephalus) at Zoo Atlanta. This species is primarily from Panama.
  • Photo: Mangrove viper (black phase) (Trimeresurus purpureomaculatus) at the Los Angeles Zoo.
  • Photo: Paper wasp (Mischocyttarus mexicanus) at the Audubon Insectarium.
  • A critically endangered (IUCN) and federally endangered hawksbill turtle (Eretmochelys imbricata) at the XCaret Resort in Mexico.
  • Photo: A yellow or eastern mantella (Mantella crocea) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Photo: A peacock pansy (Junonia almana) at Davao Butterfly House.
  • Photo: A saddleback crayfish (Faxonius durelli) from East Fork Cane Creek in Lewis County, Tennessee.
  • Photo: A bignose unicornfish (Naso vlamingii) at the Aquarium of Boise in Boise, Idaho.
  • Sonoran green toad (Anaxyrus retiformis) at the Arizona-Sonora Desert Museum.
  • Picture of a New Zealand mantis (Orthodera novaezealandiae) at the Auckland Zoo.
  • Scrawled cowfish (Acanthostracion quadricornis) at Ripley’s Aquarium of Canada.
  • Photo: Auratus cichlid (Melanochromis auratus) at L'aquarium tropical du palais de la Porte DorŽe.
  • A vulnerable Buckley's giant glass frog (Centrolene buckleyi) at Pontificia Universidad Católica del Ecuador.
  • Photo: A southern tamandua (Tamandua tetradactyla quichua) from West Ecuador, at Zoologico de Quito.
  • A meadow vole (Microtus pennsylvanicus pennsylvanicus) from Watertown, New York.
  • Picture of a Mexican bluewing butterfly (Myscelia ethusa ethusa) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: Eastern plains garter snake (Thamnophis radix) at the Columbus Zoo.
  • Photo: An Oriental litter cockroach (Opisthioplatia orientalis) at the Berlin Zoological Garden in Berlin, Germany.
  • Photo: Gambian giant pouched rat (Cricetomys gambianus) in the Kids ZooU section of the Philadelphia Zoo.
  • Picture of a decorator crab (Oregonia gracilis) at the Monterey Bay Aquarium.
  • Photo: Gargantuan stick insect (Ctenomorpha gargantua) from the Melbourne Museum
  • Photo: A Spix’s horned treefrog (Hemiphractus scutatus) at Balsa de los Sapos.
  • Midland painted turtle (Chrysemys picta marginata) at the Detroit Zoo.
  • Photo: A male Australian whistling spider (Selenocosmia crassipes) from the Melbourne Museum
  • Photo: Silver lamprey (Ichthyomyzon unicuspis) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: Cuban burrowing cockroach (Byrsotria fumigata) at Wroclaw Zoo.
  • Picture of a blue-winged mountain-tanager (Anisognathus somptuosus) at the National Aviary breeding center in Palmar, Colombia.
  • Photo: Red-capped Parrot (Purpureicephalus spurius) at the Budapest Zoo.
  • Photo: A Mandarin trinket snake (Euprepiophis mandarinus) at Safari Park Dvur Kralove.
  • Photo: A pair of redband darters (Etheostoma luteovinctum) from a private collection in Knoxville, Tennessee.
  • Photo: Algerian psammodromus (Psammodromus algirus) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A female Broad Keys cockroach (Hemiblabera tenebricosa) at the Plzen Zoo in the Czech Republic.
  • Photo: A giant banded flat rock scorpion (Hadogenes bicolor) at Reptile Gardens.
  • Photo: A Togo starburst baboon tarantula (Heteroscodra maculata) at Omaha's Henry Doorly Zoo.
  • A diamondback water snake (Nerodia rhombifer rhombifer) at the Tulsa Zoo.
  • A Brazilian porcupine (Coendou prehensilis) at the Denver Zoo, Denver, Colorado.
  • Photo: Eurasian dotterel (Charadrius morinellus) at Monticello Center in Italy.
  • Photo: A light phased Harlan's hawk (Buteo jamaicensis harlani) named Blaze at the World Bird Sanctuary.
  • Photo: A male elongate hatchetfish (Triportheus elongatus) at the Dallas World Aquarium.
  • A piping plover (Charadrius melodus). (US: Endangered)
  • A peach fronted parakeet (Eupsittula aurea “major”) from the town of Honnecourt Sur Escault, France.
  • Picture of a brown-throated sloth (Bradypus variegatus) at the Dallas World Aquarium.
  • Picture of a rosy-billed pochard ducks (Netta peposaca) at the Sylvan Heights Bird Park.
  • Picture of a white-tailed jackrabbit (Lepus townsendii townsendii) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: Buffalo sculpin (Enophrys bison) at East Bay Regional Park District.
  • Photo: A bighead carp (Hypophthalmichthys nobilis) at the Schramm Education Center near Gretna, NE.
  • Photo: A geometer moth (Periclina apricaria) from the wild, photographed at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • Photo: A Gambel’s deer mouse (Peromyscus (maniculatus) gambelii) from the Naval Weapons Station, Seal Beach Detachment Fallbrook, California.
  • An ocelot (Leopardus pardalis) at the Omaha Zoo.
  • An endangered (IUCN) Golfodulcean poison frog (Phyllobates vittatus) from a private collection.
  • Photo: Tiger wandering spider (Cupiennius salei) at the Moscow Zoo.
  • Photo: A critically endangered Hoge’s toadhead turtle (Ranacephala hogei) at Turtle Island.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • Photo: A hawfinch (Coccothraustes coccothraustes coccothraustes) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: A leafcutter ant (Atta cephalotes) at the Bugarium, a part of the ABQ BioPark.
  • Photo: Juvenile Humboldt's penguin (Spheniscus humboltdi) from Le Parc des Oiseaux in Villars Les Dombes, France.
  • Picture of a mole kingsnake (Lampropeltis calligaster rhombomaculata) at the Knoxville Zoo.
  • Picture of a Bartlett bleeding heart dove (Gallicolumba crinigera) at the Jurong Bird Park. This species is listed as vulnerable according to IUCN.
  • Picture of a Malachite (Siproeta stelenes biplagiata) in Gamboa, Panama.
  • Picture of a long-bodied cellar spider (Pholcus phalangioides) at the St. Louis Zoo.
  • Photo: A juvenile monkey face eel (Cebidichthys violaceus) at East Bay Regional Park District.
  • A picture of a groundhog (Marmota monax bunkeri).
  • A juvenile musk ox (Ovibos moschatus moschatus) at the University of Alaska in Fairbanks, AK.
  • A red rim butterfly (Biblis hyperia) at the Insectarium in New Orleans, Louisiana.
  • Critically endangered (IUCN) and federally endangered Cumberlandian combshell (Epioblasma brevidens). It has lures that look like fish eggs on top that are used to attract fish. When a fish strikes at the lures, the mussels then eject their larvae into the fish's gills and are able to increase their distribution, even upstream. The Clinch River has more federally listed aquatic species than any river in North America, yet is threatened by pollution and habitat loss. Coal mining in the watershed now raises the threat even more.
  • Photo: A female Palawan peacock pheasant (Polyplectron napoleonis) at Pheasant Heaven.
  • Narrow-headed garter snake (Thamnophis rufipunctatus) at the Phoenix Zoo.
  • A boa constrictor at the Sunset Zoo.
  • Photo: A daddy longleg spider (Leiobunum nigropalpi) near Crosslake, MN.
  • Photo: A female pavonine quetzal (Pharomachrus pavoninus) at the El Huayco Research and Raptor Breeding Center in Lima, Peru.
  • Photo: A yellowfin hind (Cephalopholis hemistiktos) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • Photo: A bird perched on a Nikon D2X camera ata farm near Bennett, Nebraska.
  • Photo: Two bluehead chubs (Nocomis leptocephalus) at the Marion Conservation Aquaculture Center.
  • Picture of a dusky-headed conure (Aratinga weddellii) at the National Aviary of Colombia.
  • A Cuenca Nelson frog (Nelsonophryne aequatorialis) at Pontificia Universidad Católica del Ecuador.
  • Picture of a female white-faced ibis (Plegadis chihi) at Tracy Aviary.
  • Photo: Golden topminnow (Fundulus chrysotus) at East Bay Regional Park District.
  • Photo: An ornate boxfish (Aracana ornata) at Omaha’s Henry Doorly Zoo & Aquarium.
  • Photo: An endangered male southern mountain reedbuck (Redunca fulvorufula fulvorufula) at Tierpark Berlin.
  • Photo: A purple tree spider (Tapinauchenius violaceus) at the Moscow Zoo.
  • Kenya Crested Guineafowl (Guttera pucherani) at the San Antonio Zoo.
  • Photo: An eastern imperial eagle (Aquila heliaca) at Tierpark Berlin.
  • Photo: Joel Sartore and Rebecca Wright with studio gear for the Photo Ark. ©Rebecca Wright
  • Photo: Whitespotted greenling (Hexagrammos stelleri) at the Alaska SeaLife Center.
  • A Cavendish's dik-dik (Madoqua kirkii cavendishi) at the Kansas City Zoo.
  • An eyelash viper (Bothriechis schlegelii) at Reptile Gardens.
  • Photo: A Sri Lanka giant squirrel (Ratufa macroura dandolena) at Zoo Leipzig in Germany.
  • A critically endangered Utila iguana (Ctenosaura bakeri) at the Miller Park Zoo.
  • Photo: BauerÕs chameleon gecko (Eurydactylodes agricolae) at the Plzen Zoo in the Czech Republic.
  • A redfish (Sciaenops ocellatus) from the wild in Louisiana.
  • Photo: A two-striped garter snake (Thamnophis hammondii) at San Diego Zoo Safari Park in San Diego, California.
  • The greater yellow-headed vulture (Cathartes melambrotus) at the Sedgwick County Zoo in Wichita, Kansas.
  • Fringe-limbed treefrog (Ecnomiohyla sp.) in Boise, Idaho
  • Picture of a critically endangered Ridgway's hawk (Buteo ridgwayi) at Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A green broad-nosed weevil (Exophthalmus jekelianus) from the wild, photographed at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • A picture of a splendorous hornet handmaiden moth (Euchromia folletii) from Bioko Island, Equatorial Guinea. This moth is a wasp mimic
  • A white-naped pheasant pigeon (Otidiphaps nobilis aruensis) at the Cincinnati Zoo.
  • Photo: A male red bird-of-paradise (Paradisaea rubra) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: Arafura file snake (Acrochordus arafurae) at Lilydale High School in Australia.
  • A West African screeching frog (Arthroleptis poecilonotus) from Bioko Island, Equatorial Guinea.
  • Photo: Green ratsnake (Senticolis triaspis intermedia) at the Arizona-Sonora Desert Museum.
  • A close-up of an American barn owl (Tyto alba pranticola).
  • Picture of a vulnerable spiny-tailed iguana (Ctenosaura hemilopha conspicuosa) at the St. Louis Zoo.
  • Photo: A Guam rail (Hypotaenidia owstoni) at the Santa Fe College Teaching Zoo. This species is extinct in the wild.
  • A vulnerable Mexican caecilian (Dermophis mexicanus) at the Tennessee Aquarium.
  • Photo: An endangered relict splitfin (Xenoophorus captivus) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: Frilled house gecko (Hemidactylus platyurus) at Crocolandia in the Philippines.
  • A tent tortoise (Psammobates tentorius verroxii) at the Fresno Chaffe Zoo.
  • A Cope's treefrog (Hyla chrysoscelis) caught in the wild near Dunbar, Nebraska.
  • Photo: A male and female thickhead chub (Opsariichthys pachycephalus) from a private collection in Knoxville, Tennessee.
  • Close-up of a larval central newt (Notophthalmus viridescens) at Missouri State University.
  • A picture of a variable mud turtle (Pelusios rhodesianus) from the Turtle Survival Center.
  • Photo: Golden tree snake (Dendrelaphis punctulatus) at Moonlit Sanctuary
  • Photo: A juvenile Alabama bass (Micropterus henshalli) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Cahaba River, Perry County, AL
  • Photo: An endangered Canara pearlspot (Etroplus canarensis) from a private collection.
  • Picture of a male ringed teal (Callonetta leucophrys) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A king swallowtail (Papilio thoas nealces) at Selvatura Park in Monteverde, Costa Rica.
  • Photo: A hog badger (Arctonyx collaris) at Night Safari, part of Wildlife Reserves Singapore.
  • Photo: A nymph of a southern green stink bug (Nezara viridula virgifera) at the University of Florida in Gainesville.
  • Photo: A male Canada spruce grouse (Falcipennis canadensis canace) at Grouse Park Waterfowl in Cascade, Idaho.
  • Photo: A South Florida slash pine (Pinus elliottii var. densa) from the Pine Rocklands in Florida.
  • Photo: A federally endangered peregrine falcon (Falco peregrinus anatum) at Raptor Conservation Alliance.
  • Picture of an American bittern (Botaurus lentiginosus) at Tracy Aviary.
  • Photo: Walking stick (Trachythorax maculicollis) at the Budapest Zoo.
  • Picture of a Southern lapwing (Vanellus chilensis) at the Palm Beach Zoo.
  • Photo: Two female Defassa waterbuck (Kobus ellipsiprymnus defassa) at Parco Natura Viva in Bussolengo, Italy.
  • Photo: A flame moth (Axylia putris) at Wildfowl and Wetlands Trust Slimbridge in Slimbridge, England.
  • Photo: A female O'Shaughnessy's chameleon (Calumma oshaughnessyi) from a private collection in St. Augustine, Florida.
  • Photo: A Monterrey platyfish (Xiphophorus couchianus) at the Zoological Society of London.
  • Picture of a flock of scarlet ibis (Eudocimus ruber) at the Caldwell Zoo in Tyler, Texas.
  • Picture of a brown pelican (Pelecanus occidentalis) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A young yellow-bellied sapsucker, Sphyrapicus varius, at the Wildlife Rehab Center of Minnesota.
  • Photo: An Alabama shiner (Cyprinella callistia) from Hillabee Creek, Tallapoosa River Drainage near Alexander City, Alabama.
  • Picture of a ring-billed gull (Larus delawarensis) at the Wildlife Rehabilitation Center of Northern Utah.
  • A Sonoran desert toad (Incilius alvarius) at the Tulsa Zoo.
  • Photo: A European herring gull (Larus argentatus argenteus) at Hessilhead Wildlife Rescue.
  • Photo: A male blue-striped ribbonsnake (Thamnophis sauritus nitae) from a private collection.
  • Photo: A short-eared owl (Asio flammeus suinda) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: A female reticulated siren (Siren reticulata) at Joe Budd Wildlife Management Area near Quincy, FL.
  • Mountain chorus frog (Pseudacris brachyphona) at the Toledo Zoo.
  • Photo: A red squirrel (Sciurus vulgaris fuscoater) at Zoopark Zajezd.
  • Photo: A female Stephens’ kangaroo rat (Dipodomys stephensi) from the Naval Weapons Station, Seal Beach Detachment Fallbrook, California.
  • Photo: A Great Plains rat snake (Pantherophis emoryi) from a private collection.
  • Photo: Glossy ibis (Plegadis falcinellus) from the Budapest Zoo.
  • Photo: Asian flower beetle (Agestrata orichalca) at the Insectarium in New Orleans.
  • Photo: Two Josephine's lorikeets (Charmosyna josefinae) photographed at Loro Parque Fundacion.
  • Photo: A black-throated mango hummingbird (Anthracothorax nigricollis) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A Texas horned lizard (Phrynosoma cornutum) at the San Antonio Zoo. The orange coloration helps it blend into the rocky outcroppings and soil that it inhabits.
  • A critically endangered (IUCN) and federally endangered hawksbill turtle (Eretmochelys imbricata) at the XCaret Resort in Mexico.
  • A Cope's treefrog (Hyla chrysoscelis) caught in the wild near Dunbar, Nebraska.
  • Photo: A lombardoi mbuna cichlid (Metriaclima lombardoi) at the Fresno Chaffee Zoo in Fresno, California.
  • A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.
  • Picture of a green-cheeked parakeet (Pyrrhura molinae hypoxantha) at Pet Paradise.
  • Picture of a vulnerable Lake Kutubu rainbowfish (Melanotaenia lacustris) at the Newport Aquarium.
  • Picture of a lesser snow goose (Chen caerulescens caerulescens).
  • A picture of a horned lark chick (Eremophila alpestris alpestris) at the Wildlife Rehabilitation Center in Roseville, Minnesota.
  • A picture of a mallard duckling (Anas platyrhynchos platyrhynchos) at Wildlife Rescue Team Inc. in Lincoln, Nebraska.
  • A midwest worm snake (Carphophis amoenus helenae) from the Shawnee National Forest.
  • Photo: A collared kingfisher (Todiramphus chloris) at the Plzen Zoo.
  • Photo: San Diego alligator lizard (Elgaria multicarinata webbii) at the Arizona-Sonora Desert Museum.
  • A unique color variant of an eastern hellbender (Cryptobranchus alleganiensis) named "Blondie" at the Saint Louis Zoo. When she came from North Carolina to the zoo as a juvenile, she only had a couple of orange spots. Over the past 12 years her color has morphed into this very showy orange.
  • A black rat (Rattus rattus) near Petrie, Queensland.
  • An American kestrel (Falco sparvarius paulus) at the Audubon Center for Birds of Prey.
  • A picture of a Western whiptail (Aspidoscelis tigris tigris) at Springs Preserve.
  • Photo: A New Caledonia giant gecko (Rhacodactylus leachianus) at Reptile Gardens.
  • Photo: A gould's long-eared bat (Nyctophilus gouldi) at the Australian Bat Clinic.
  • Photo: Stick insect (Peruphasma schultei) at the Budapest Zoo.
  • Photo: An ornate bella moth (Utetheisa ornatrix) at Tall Timbers Research Station and Land Conservancy in Tallahassee, Florida.
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