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 48,843-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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  • Harlequin flower beetle (Gymnetis caseyi) at the Houston Zoo.
  • Photo: A unidentified northern caddisfly (Limnephilus sp.) in a protective case it made out of leaves to hide itself in a stream, collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Davis, West Virginia.
  • Photo: White-rumped vulture (Gyps bengalensis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • A midwest worm snake (Carphophis amoenus helenae) from the Shawnee National Forest.
  • A green aracari (Pteroglossus viridis) at the Houston Zoo
  • Photo: A female conehead katydid (Subria sp.) from the Tapir Valley, Costa Rica.
  • Photo: An endangered slabside pearlymussel (Pleuronaia dolabelloides) from the Clinch River in Tennessee.
  • A critically endangered (IUCN) and federally endangered hawksbill turtle (Eretmochelys imbricata) at the XCaret Resort in Mexico.
  • Photo: An Atlantic tarpon (Megalops atlanticus) at Gulf Specimen Marine Lab.
  • Photo: A juvenile Standing's day gecko (Phelsuma standingi) at the Plzen Zoo.
  • Photo: Cabezon (Scorpaenichthys marmoratus) at the Alaska SeaLife Center in Seward, AK.
  • A boa constrictor at the Sunset Zoo.
  • Photo: Walking stick (Pylamenes guangxiensis) at the Budapest Zoo.
  • Photo: A pair of white-eyed giant leaf-tailed gecko (Uroplatus giganteus) at Riverbanks Zoo and Garden.
  • Photo: Endangered Arboreal alligator lizard (Abronia fimbriata) at Urban Ark Conservation
  • Photo: A Giant Namibian sand gecko (Chondrodactylus angulifer angulifer) from a private collection.
  • Photo: A three striped night monkey (Aotus trivirgatus) at the Faunia zoo in Madrid, Spain.
  • Photo: A striped newt (Notophthalmus perstriatus) at the Sedgwick County Zoo.
  • Photo: A female desert bighorn sheep (Ovis canadensis nelsoni) at the Arizona-Sonora Desert Museum in Tucson, AZ.
  • Photo: Blue Boxfish (Ostracion meleagris) at Pure Aquariums.
  • Photo: A baby northern pig-tailed macaque (Macaca leonina) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • A vulnerable (IUCN) greater prairie-chicken (Tympanuchus cupido.)
  • Photo: A Derby's flower beetle (Dicronorhina derbyana conradsi) at Aquarium Berlin.
  • Photo: A Cuban parakeet (Psittacara euops) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A black-billed magpie (Pica hudsonia) at Tracy Aviary.
  • Photo: A Bransford’s litter frog (Craugastor bransfordii) from the Tapir Valley, Costa Rica.
  • A Vietnamese forest centipede (Scolopendra subspinipes) at the Audubon Zoo in New Orleans, Louisiana.
  • A picture of a critically endangered Arizona desert tortoise foot (Gopherus agassizii) at the Rolling Hills Wildlife Adventure in Salina, Kansas.
  • Photo: Javan myna (Acridotheres javanicus) at Zoo Negara.
  • Photo: A Celebes rainbowfish (Marosatherina ladigesi) at the Denver Zoo.
  • Photo: Chappell Island tiger snake (Notechis scutatus scutatus) from a private collection.
  • Photo: A ring-tailed cardinalfish (Ostorhinchus aureus) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • A juvenile green rat snake (Senticolis triaspis) at the Arizona-Sonora Desert Museum.
  • Photo: Familiar bluet (Enallagma civile) at Cedar Point Biological Station.
  • A redfish (Sciaenops ocellatus) from the wild in Louisiana.
  • Photo: Pacific island boa (Candoia paulsoni) at Eltoro Zoo de la Castellana, Inc., on Negros Island, Philippines.
  • Photo: A Paraguayan rainbow boa (Epicrates crassus) at Wroclaw Zoo in Poland.
  • Picture of a male red-headed woodpecker (Melanerpes erythrocephalus) named 'Nigel' at St. Francis Wildlife Association, a wildlife rescue center near Quincy, Florida.
  • Studio portrait of red knots (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.
  • Photo: A little skate (Leucoraja erinacea) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: A juvenile, female, Harris's hawk (Parabuteo unicinctus unicinctus) at Zoologico de Quito.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • Photo: An adonis pleco or polka dot lyre-tail pleco (Acanthicus adonis) at L'aquarium tropical du palais de la Porte DorŽe.
  • A picture of a critically endangered four-eyed turtle (Sacalia quadriocellata) at the Tennessee Aquarium.
  • Bryn, the federally endangered Columbia Basin pygmy rabbit (Brachylagus idahoensis), sat for this portrait in 2007 at the Oregon Zoo in Portland, Oregon. She was one of two female Columbia Basin pygmy rabbits left, the end of the line for this race of animals. Since there are no males left, this means only animals intercrossed with the Idaho race will survive. She died in 2008, marking the end of her genetic line. This subpopulation lost its sagebrush habitat as the land was developed for agriculture in the state of Washington.
  • Picture of an endangered Styan's red panda (Ailurus fulgens styani) at the Toronto Zoo.
  • Four-striped grass mouse or four-striped grass rat (Rhabdomys pumilio) from Mt. Gorongosa in Mozambique, Africa.
  • Photo: A female knobbed hornbill (Rhyticeros cassidix) at Walsrode Bird Park in Walsrode, Germany.
  • A picture of a black-crested titmouse (Baeolophus atricristatus paloduro) at the Brown Ranch, Texas.
  • Photo: Three female leopard geckos (Eublepharis macularius) at the Sunset Zoo in Manhattan, Kansas.
  • Photo: Regal ringneck snake (Diadophis punctatus regalis) at the Arizona-Sonora Desert Museum.
  • Photo: A male Reeve’s pheasant (Syrmaticus reevesii) at Redmon Aviaries.
  • Photo: A long-tailed bushbaby (Otolemur crassicaudatus) at Duke Lemur Center in Durham, North Carolina.
  • Photo: A lowland streaked tenrec (Hemicentetes semispinosus) in Madagascar.
  • A southern three-banded armadillo (Tolypeutes matacus) at the Lincoln Children's Zoo, Lincoln, Nebraska. (IUCN: Near Threatened)
  • A picture of a red-throated ant tanager (Habia fuscicauda erythrolaema) at the Aviario Nacional de Colombia (National Aviary of Colombia)
  • A picture of a band-winged meadowhawk (Sympetrum occidentale) at Cedar Point Biological Station.
  • Photo: A Kirtland's warbler or Jack pine warbler (Setophaga kirtlandii) near Mio, Michigan.
  • Photo: Orange flower sponge (Agelas sp.) at Butterfly Pavilion.
  • Photo: Searcher (Bathymaster signatus) at the Alaska SeaLife Center in Seward, AK.
  • A Central American bushmaster (Lachesis stenophrys) at the Gladys Porter Zoo in Brownsville, Texas.
  • A male mosquitofish (Gambusia affinis) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Photo: Shingleback lizard (Tiliqua rugosa) at Moonlit Sanctuary
  • Photo: Squatter pigeon (Geophaps scripta) at Melbourne Zoo. This species is listed as vulnerable by IUCN.
  • A South American cockroache (Blaberus giganteus) at the Bramble Park Zoo.
  • Photo: A jararaca (Bothrops jararaca) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • Photo: A ​Danube whitefin gudgeon (Romanogobio vladykovi) at Alpenzoo Innsbruck in Innsbruck, Austria.
  • A marbled gecko (Christinus marmoratus) at Scaly Dave's Herp Shack.
  • A picture of a critically endangered Arizona desert tortoise (Gopherus agassizii) at the Rolling Hills Wildlife Adventure in Salina, Kansas.
  • Photo: A lined day gecko, Phelsuma lineatus, at Tsimbazaza Zoo.
  • A western fat-tailed dwarf lemur (Cheirogaleus medius) named Osprey at the Duke Lemur Center. This species is listed as vulnerable by IUCN. Various species of dwarf lemurs keep fat stored in their tails in order to go into hibernation or torpor for several weeks in the winter.
  • Picture of a red-tailed hawk (Buteo jamaicensis).
  • Photo: A scarlet-faced liocichla (Liocichla ripponi) at Riverbanks Zoo and Garden.
  • A Great Plains toad (Anaxyrus or Bufo cognatus) at the Phoenix Zoo.
  • A picture of an emerald starling (Lamprotornis iris) at the Plzen Zoo.
  • A picture of a brown anole (Anolis sagrei sagrei) at the Audubon Zoo in New Orleans.
  • Photo: A zebra mussel (Dreissena polymorpha) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Photo: Southern field cricket (Gryllus bimaculatus) at the Moscow Zoo.
  • Picture of an undescribed harlequin frog (Atelopus species) from Suriname.
  • Photo: A tiny salamander (Bolitoglossa rufescens) at San Francisco State University.
  • Photo: A radjah shelduck (Radjah radjah rufigergum) at Omaha's Henry Doorly Zoo.
  • A black milksnake (Lampropeltis triangulum gaigeae) at the Fort Worth Zoo.
  • Photo: A male brown leaf chameleon, Brookesia superciliaris, from a private collection.
  • Photo: Crab trap worm (Lysarete brasiliensis) from Gulf Specimen Marine Laboratories.
  • Photo: A tawny-browed owl (Pulsatrix koeniswaldiana) at BioParque do Rio.
  • Wood frog (Lithobates sylvaticus or Rana sylvatica) at the National Aquarium in Baltimore.
  • A picture of an Andean milk snake (Lampropeltis micropholis) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • A black stork (Ciconia nigra) at the Fort Wayne Children's Zoo.
  • Hibernating Arctic ground squirrels (Spermopilus parryii) at the University of Alaska at Fairbanks. This animal is the grand champion of all hibernators. It's the only mammal that can drop its body temperature to below freezing. They hibernate for seven months. Females go in first, in August. Males follow a month later. They come out again to feed on tundra plants in May. Biologists at UAF have been studying the animal for 20 years, but still can't figure out how this animal maintains a flat body temperature for all those months just above freezing. "You could put people into hibernation for space trips if you could understand it better," said Franziska 'Fran' Kohl, one of the biologists here. "They also show symptoms of Alzheimers during hibernation." She added that traumatic head injuries heal when in hibernation, another thing scientists are trying to figure out.
  • Photo: A male elongate hatchetfish (Triportheus elongatus) at the Dallas World Aquarium.
  • A Jamaican iguana (Cyclura collei) from the Sedgwick County Zoo. This is one of the most critically endangered lizards in the world. Listed as critically endangered (IUCN) and federally endangered
  • Photo: A Mexican west coast boa constrictor (Boa sigma) at the Plzen Zoo in the Czech Republic.
  • Photo: A Wilm’s agama (Xenagama wilmsi) at the Plzen Zoo in the Czech Republic.
  • Photo: An ornate hawk-eagle (Spizaetus ornatus ornatus) at the El Huayco Research and Raptor Breeding Center in Lima, Peru.
  • A picture of a female eastern towhee (Pipilo erythrophthalmus alleni) at Tall Timbers Research Station and Land Conservancy.
  • Vulnerable Stolzmann's horned frogs (Ceratophrys stolzmanni) collected near Pilalo, Ecuador.
  • Picture of a panther chameleon (Furcifer pardalis) at the Lincoln Children's Zoo.
  • Photo: Giant slippery frog (Conraua robusta) collected near Manjo, Cameroon.
  • Photo: A tricolor or phantasmal dart frog (Epipediobates tricolor) at the National Aquarium in Baltimore.
  • Picture of a West African lungfish (Protopterus annectens) at the Oklahoma City Zoo.
  • Photo: A brown color phase of a Vaillant's frog, Lithobates vaillanti, at Natura Eco Park.
  • Picture of a Bismarck ringed python (Bothrochilus boa) from a private collection.
  • Photo: A monacled cobra (Naga kauthia) at Reptile Gardens.
  • Photo: A Taylor's cantil (Agkistrodon taylori) at Reptile Gardens.
  • Picture of a silver-haired bat (Lasionycteris noctivagans) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: A female emerald hummingbird (Amazilis amazilia) at the San Diego Zoo.
  • Photo: A zebra pillbug (Armadillidium maculatum) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A female Blue frosted Banner (Catonephele numilia esite) in Gamboa, Panama.
  • A mata mata (Chelus fimbriatus) at Reptile Gardens.
  • Photo: A female and male swordtail (Xiphophorus signum) at the Plzen Zoo in the Czech Republic.
  • Picture of a Himalayan griffon vulture (Gyps himalayensis) at the Assam State Zoo cum Botanical Garden in Guwahati, Assam, India.
  • Picture of an endangererd northern helmeted curassow (Pauxi pauxi) at the Dallas World Aquarium.
  • Photo: Two vulnerable West African black-crowned cranes (Balearica pavonina pavonina) at the Columbus Zoo, Columbus, Ohio.
  • A vulnerable (IUCN) greater prairie-chicken (Tympanuchus cupido.)
  • A male mimic poison frog (Ranitomeya imitator) with a single tadpole on his back, from a private collection.
  • Photo: An endangered flat-headed cat (Prionailurus planiceps) at the Taiping Zoo.
  • A crawfish (Procambarus acutus) at the Sedgwick County Zoo in Wichita.
  • Light phase or albino red-backed poison frog (Ranitomeya reticulata) from a private collection.
  • Photo: An unidentified amphipod species (Amphipoda sp.) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Picture of a common raven (Corvus corax principalis) named Jake at the LA Zoo.
  • Photo: An Atlantic needlefish (Strongylura marina) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A prickly gecko (Heteronotia binoei) at the Sedgwick County Zoo in Wichita, Kansas.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Photo: A male greater bird-of-paradise (Paradisaea apoda) at Batu Secret Zoo and Eco Green Park in Batu, Indonesia.
  • Photo: Two Australian spotted jellyfish (Phyllorhiza punctata) at Loro Parque in Spain.
  • Photo: A red milksnake (Lampropelits triangulum) at the St. Louis Zoo.
  • Picture of a four-banded sandgrouse (Pterocles quadricinctus) at the Tulsa Zoo.
  • Photo: A female ​North Iranian spur-thighed tortoise (Testudo graeca buxtoni) at Turtle Island.
  • Photo: A Vulnerable (IUCN) Common carp (Cyprinus carpio) at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • Florida box turtle (Terrapene carolina bauri) at the Lowry Park Zoo.
  • Photo: A male striated darter (Etheostoma striatulum) from North Fork Creek, Bedford County, Tennessee.
  • Photo: A tule elk (Cervus canadensis nannodes) at Tierpark Berlin.
  • A picture of a federally endangered red-crowned crane (Grus japonensis) at the Kansas City Zoo in Missouri. This species is listed as vulnerable by IUCN.
  • Photo: Smallmouth bass (Micropterus dolomieu) at the Genoa National Fish Hatchery.
  • A picture of an ornate titi (Plecturocebus ornatus) at Piscilago Zoo in Bogota, Colombia.
  • Photo: Malie, an endangered, 12-yr-old Australian sea lion (Neophoca cinerea) at the Taronga Zoo.
  • Photo: A tailless tenrec (Tenrec ecaudatus) at Bahitoo Farm in Abu Dhabi, United Arab Emirates.
  • A sturgeon chub (Macrhybopsis gelida) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: A juvenile North American beaver (Castor canadensis) at the WildCare Foundation, a wildlife rehabber in Noble, Oklahoma.
  • Florida strain of brown bullhead (Ameirurus nebulosus) at East Bay Regional Park District.
  • Photo: A female cardinal lory (Chalcopsitta cardinalis) at the Cincinnati Zoo.
  • Picture of a Mississippi kite (Ictinia mississippiensis) at St. Francis Wildlife Association, a wildlife rescue center near Quincy, Florida.
  • Photo: A green turaco (Tauraco persa persa) from a private collection in Choussy, France.
  • Photo: A yellow-fronted parrot (Poicephalus flavifrons) at Vogelpark Turnersee in St. Primus, Austria.
  • Photo: Barred owl (Strix varia varia) at Monticello Center in Italy.
  • Photo: Smooth-fronted caiman (Paleosuchus trigonatus) at the St. Augustine Alligator Farm.
  • Picture of an Arizona tiger salamander (Ambystoma mavortium nebulosum) at the St. Louis Zoo in St. Louis, Missouri.
  • Photo: A New Guinea bronzewing (Henicophaps albifrons) at Ragunan Zoo in Jakarta, Indonesia.
  • A picture of a federally endangered Jamaican boa (Chilabothrus subflavus) at the St. Louis Zoo in Missouri. This species is also listed as vulnerable by IUCN.
  • Picture of a Burton's legless lizard (Lialis burtonis) at the Healesville Sanctuary.
  • Photo: A cape robin-chat (Dessonornis caffer) at Waddesdon Manor Aviary, Waddesdon, England.
  • A vulnerable (IUCN) Komodo dragon (Varanus komodoensis) at the Houston Zoo.
  • A Costa Rican jumping viper (Atropoides picadoi) at Zoo Atlanta.
  • Photo: A pair of FranklinÕs ground squirrels (Poliocitellus franklinii) at the Wildlife Rescue Center of Minnesota.
  • Photo: Stick insect (Hermagoras cultratolobatus) at the Moscow Zoo.
  • Picture of a red banded snapping shrimp (Alpheus randalli) at Pure Aquariums.
  • Photo: Regal horned lizard (Phrynosoma solare) at the Singapore Zoo.
  • A Southern screamer (Chauna torquata) at the Kansas City Zoo.
  • Photo: Epaulette shark (Hemiscyllium ocellatum) at the Dallas Children's Aquarium.
  • Photo: A North Carolina spiny crayfish (Faxonius carolinensis) at the Marion Conservation Aquaculture Center.
  • Great Plains narrow-mouthed toad (Gastrophryne olivacea) at the Arizona-Sonora Desert Museum.
  • Photo: Hepatic tanager (Piranga flava) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • An African giant plated lizard (Gerrhosaurus validus) at the Houston Zoo.
  • Spiny-headed treefrog (Anotheca spinosa) from central America at Zoo Atlanta.
  • A picture of a Northern waterthrush (Parkesia noveboracensis) at Iowa Bird Rehabilitation in Des Moines, IA.
  • Photo: A critically endangered negros bleeding-heart pigeon, Gallicolumba keayi, at theTalarak Foundation.
  • Picture of a Kentucky Arrow Darter (Etheostoma spilotum) at Conservation Fisheries.
  • Photo: A pair of banded tulip snail (Cinctura lilium) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A female Faeroe Island eider (Somateria mollissima faeroeensis) at Lundi Farm in Verl, Germany.
  • Photo: A female African hawk-eagle (Aquila spilogaster) at Zoopark Zajezd.
  • Photo: A king rail (Rallus elegans) at the Carolina Wildlife Center, a place that rescues and rehabilitates injured and orphaned wildlife.
  • Photo: A radial firefish (Pterois radiata) at Aquazoo Loebbecke Museum in Dusseldorf, Germany.
  • Photo: A particoloured flying squirrel (Hylopetes alboniger) at the Moscow Zoo.
  • Photo: A Tokay gecko (Gekko gecko) from a private collection.
  • Picture of an ivory-billed aracari (Pteroglossus azara flavirostris) at the Dallas World Aquarium.
  • Photo: A European cat snake (Telescopus fallax) at Zagreb Zoo in Zagreb, Croatia.
  • Photo: A female many-colored fruit dove (Ptilinopus perousii) at the Toledo Zoo.
  • Photo: A blue jay (Cyanocitta cristata bromia) near Hudson, Wisconsin, USA.
  • Photo: A mimic Lymnaea snail (Pseudosuccinea columella) at the Fish Biodiversity Lab at Auburn University in Auburn, Alabama.
  • Picture of a vulnerable Javan lutung (Trachypithecus auratus) at the Omaha Zoo.
  • Picture of a blue naped mousebird (Urocolius macrourus) at the Jurong Bird Park.
  • Picture of a common squirrel monkey, Saimiri sciureus, at the Lincoln Children's Zoo.
  • Photo: A female Philippine slow loris (Nycticebus menagensis) at Taman Safari Prigen in Prigen, Indonesia.
  • Photo: A mud ivory whelk (Babylonia lutosa) at The National Aquarium, Abu Dhabi, United Arab Emirates.
  • A picture of a Spanish pond turtle (Mauremys leprosa leprosa) at Parque Biologico.
  • Photo: An endangered whitefin or whiteseam fighting fish (Betta albimarginata) from a private collection in Knoxville, Tennessee.
  • Photo: A Philippine warty pig (Sus philippensis philippensis) at the Avilon Wildlife Conservation Foundation.
  • Photo: A fat-tailed scorpion (Hottentotta minusalta) at Verve Biotech in Waverly, Nebraska.
  • Photo: Southern Palawan tree squirrel (Sundasciurus steerii) at Eltoro Zoo de la Castellana, Inc., on Negros Island, Philippines.
  • Photo: Giant Asian mantis (Hierodula membranacea) at the Insectarium in New Orleans.
  • Photo: Mosshead sculpin (Clinocottus globiceps) at Ripley's Aquarium of Canada.
  • Photo: A red junglefowl (Gallus gallus gallus) at Zoo Plzeň.
  • A picture of a red winged parrot (Aprosmictus erythropterus erythropterus) at Loro Parque Fundacion.
  • Photo: A ribbon moray eel (Rhinomuraena quaesita) at Petra Aqua.
  • Arctic ground squirrel (Spermophilus parryii) at the University of Alaska at Fairbanks.
  • Picture of a Bermuda diamondback terrapin (Malaclemys terrapin). This may soon be designated as a separate subspecies or even a full species, and was photographed at the Bermuda Aquarium, Museum and Zoo.
  • Green and black poison dart frog, Panama morph (Dendrobates auratus) from a private collection.
  • Photo: A red postman (Heliconius erato) at the Urku Center, Tarapoto, Peru.
  • Young grackles, Quiscalus quiscula, at the home of wildlife rescuer in Lincoln, Nebraska.
  • Picture of a northern walkingstick (Diapheromera femorata) at the St. Louis Zoo.
  • Photo: A female Spix's white-fronted capuchin (Cebus unicolor) at Quistococha Zoo in Iquitos, Peru.
  • Photo: Silver lamprey (Ichthyomyzon unicuspis) at the University Lab at the University of Minnesota in St. Paul.
  • Picture of a pale-bellied brent goose (Branta bernicla hrota) at Sylvan Heights Bird Park.
  • Photo: A brown pelican (Pelecanus occidentalis murphyi) at Parque de las Leyendas in Lima, Peru.
  • Photo: A blue-crowned conure (Psittacara acuticaudatus acuticaudatus) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Photo: An adult, male white-tailed titi (Callicebus discolor) at Zoologico de Quito.
  • A black Pakistan cobra (Naja naja) from a private collection.
  • An endangered glass frog (Centrolene audax) near Limon, Ecuador.
  • Picture of a Pileated woodpecker (Dryocopus pileatus abietcola) at the Virginia Aquarium.
  • Photo: An Arabian mountain gazelle (Gazella cora) photographed at the Dubai Safari Park in Dubai, United Arab Emirates.
  • An Arizona ridge-nosed rattlesnake (Crotalus willardi willardi) at the St. Louis Zoo.
  • Picture of a California aglaja nudibranch (Navanax inermis) at the REEF, at the University of California, Santa Barbara.
  • Picture of an Australian ringneck (Barnardius zonarius) at the Budapest Zoo.
  • Photo: A critically endangered addax (Addax nasomaculatus) at the Denver Zoo.
  • A critically endangered spider monkey named Arturo, (Ateles geoffroyi geoffroyi) at the Wellington Zoo.
  • Picture of a Perdido Key beach mouse (Peromyscus polionotus trissyllepsis) a federally-endangered rodent, at the Univ. of South Carolina.
  • A giant horned lizard (Phrynosoma asio) at the LA Zoo.
  • Picture of a two-month old, federally endangered jaguar cub (Panthera onca) named Teiku at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A long-tailed chinchilla at the Capital Humane Society in Lincoln.
  • Photo: Snowy-crowned robin-chat (Cossypha niveicapilla) at the Oklahoma City Zoo.
  • Photo: A Costa Rican red tarantula (Sericopelma angustum) at Wroclaw Zoo in Poland.
  • Photo: A Chinese water dragon (Physignathus cocincinus) at Scaly Dave's Herp Shack in Manhattan, Kansas.
  • Photo: Sacramento splittail (Pogonichthys macrolepidotus) at the University of California, Davis.
  • Photo: A chocolate or Brown pansy (Junonia hedonia ida) at Davao Butterfly House.
  • A picture of a Tapir Valley treefrog (Tlalocohyla celeste) from the Tapir Valley, Costa Rica.
  • A broad-banded watersnake (Nerodia fasciata confluens) at the Houston Zoo.
  • A Northern red-billed hornbill (Tockus erythrorhynchus erythrorhynchus) at Omaha’s Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Photo: A longhorn sculpin (Myoxocephalus octodecemspinosus) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of a fisher's angelfish (Centropyge fisheri) at Pure Aquariums.
  • Photo: Taxidermy specimen of an ivory-billed woodpecker at the University of Nebraska State Museum.
  • Photo: An endangered Sakishima grass lizard (Takydromus dorsalis) at Zoo Plzeň in the Czech Republic.
  • A yellow-shafted flicker (Colaptes auratus luteus) at Nebraska Wildlife Rehab, Inc.
  • Photo: An Angolan coral snake (Aspidelaps lubricus cowlesi) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • Photo: Australian cockroach (Periplaneta australasiae) at the Bugarium at the Albuquerque BioPark.
  • Photo: A Spicebush swallowtail (Papilio troilus ilioneus) at Butterfly World.
  • Picture of a federally endangered Florida leafwing butterfly (Anaea troglodyta floridalis) at the McGuire Center for Lepidoptera and Biodiversity.
  • A Senegal parrot (Poicephalus senegalus) at the Sutton Avian Research Center.
  • South American wood turtle (Rhinoclemmys pulcherrima rogerbarbourii) at the Arizona-Sonora Desert Museum.
  • Photo: Philippine hawk-owl (Ninox philippensis philippensis) at Crocolandia in the Philippines.
  • Picture of a bristlenose plecostomus (Ancistrus sp.) at Pure Aquariums.
  • Picture of a hairy sea cucumber (Sclerodactyla briareus) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A San Andres Island form of the white-throated mud turtle (Kinosternon scorpioides albogulare) from a private collection.
  • A pet cockatiel, Nymphicus hollandicus, in Lincoln, Nebraska.
  • Flap-necked chameleon (Chamaeleo dilepis) from Gorongosa National Park.
  • 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: Crested Goshawk (Accipiter trivirgatus extimus) at the Avilon Zoo.
  • Photo: Two endangered ring-tailed lemurs (Lemur catta) at the Indianapolis Zoo.
  • Photo: A yellow-headed caracara (Milvago chimachima chimachina) at Quistococha Zoo in Iquitos, Peru.
  • A picture of a Bullock's Oriole (Icterus bullockiorum parvus) at the Sulphur Creek Nature Center in Hayward, California.
  • Photo: European hamster (Cricetus cricetus) at the Moscow Zoo.
  • Photo: Giant walkingstick (Eurycnema osiris) at Melbourne Zoo.
  • Picture of a cactus mouse (Peromyscus eremicus) at the Plzen Zoo in the Czech Republic.
  • Monk parakeet or quaker parrot (Myiopsitta monachus) 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: A round-backed millipede (Tonkinbolus caudulanus), left, and a bumblebee millipede (Anadenobolus monilicornis), right, at the Berlin Zoological Garden in Berlin, Germany.
  • Photo: A four-month old oncilla (Leopardus tigrinus pardinoides) at Huachipa Zoo in Lima, Peru.
  • A Cuban boa (Chilabothrus angulifer) at the Palm Beach Zoo.
  • Photo: A grey backed myna (Acridotheres tricolor) at Jurong Bird Park.
  • A common grackle (Quiscalus quiscula).
  • Photo: Keeled rat snake (Ptyas carinata) at the Singapore Zoo.
  • Photo: A Northern pipefish (Syngnathus fuscus) at the Virginia Aquarium.
  • A harpy eagle (Harpia harpyja) at the Los Angeles Zoo.
  • Photo: Flower beetle (Eudicella aethiopica) at the Budapest Zoo.
  • A blue-spotted salamander (Ambystoma laterale) at the National Mississippi River Museum and Aquarium, Dubuque, Iowa.
  • An endangered (IUCN) and federally endangered mountain yellow-legged frog (Rana muscosa). Population locality: San Bernardino.
  • Photo: Horned parakeets (Eunymphicus cornutus) at Loro Parque Fundacion.
  • Photo: An endangered Visayan tarictic hornbill (Penelopides panini panini) at Negros Forest Park.
  • Photo: A pyjama shark (Poroderma africanum) at Loveland Living Planet Aquarium.
  • Southern toad (Anaxyrus terrestris) at Riverbanks Zoo.
  • An eastern lubber grasshopper (Romalea guttata) at the Audubon Zoo in New Orleans.
  • Photo: A peanut worm (Themiste alutacea) at Gulf Specimen Marine Lab and Aquarium.
  • A white rhinoceros (Ceratotherium simum simum) at Rolling Hills Wildlife Adventure in Salina, Kansas.
  • A federally threatened Yacare caiman (Caiman yacare yacare) at the St. Augustine Alligator Farm.
  • Picture of a black-headed munia (Lonchura malacca) from a private collection.
  • Photo: A red-winged tinamou (Rhynchotus rufescens rufescens) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: An Arabian angelfish (Pomacanthus asfur) at Omaha’s Henry Doorly Zoo & Aquarium.
  • Photo: An endangered Red Hills salamander (Phaeognathus hubrichti) at the Cincinnati Zoo.
  • Spot croaker (Leiostomus xanthurus) at the Virginia Aquarium.
  • Photo: A Peruvian red-snouted treefrog (Scinax ruber) at the Urku Center, Tarapoto, Peru.
  • Photo: A common evening brown butterfly (Melanitis leda), dry season individual on Semirara Island in the Philippines.
  • Peru marsupial frog (Gastrotheca peruana) at the National Aquarium in Baltimore.
  • Photo: Common Indian krait (Bungaras caeruleus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: Viper boa (Candoia aspera) at the Sedgwick County Zoo.
  • Picture of a desert spiny lizard (Sceloporus magister) at the LA Zoo.
  • Crowned snake (Tantilla relicta relicta) at the Archbold Biological Station. This animal was collected near Arcadia, Florida, in De Soto County.
  • An annulated boa (Corallus blombergi) at the Knoxville Zoo.
  • Photo: A female and male Andean duck (Oxyura ferruginea ferruginea) at Lundi Farm in Verl, Germany.
  • Photo: A critically endangered aeolian wall lizard (Podarcis raffonei) at the Rome Zoo.
  • Photo: A skimmer dragonfly nymph (Odonata Libellulidae) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • A many-horned adder (Bitis cornuta) at the Omaha Zoo.
  • A boa constrictor at the Sunset Zoo.
  • Picture of a thimble jellyfish (Beroe ovata) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Picture of an endangered Cauca guan (Penelope perspicax) at the Cali Zoo in Colombia.
  • A picture of a warty frogfish (Antennarius maculatus) at the Monterey Bay Aquarium.
  • Photo: A European pratincole (Glareola pratincola) at the Plzen Zoo in the Czech Republic.
  • Photo: Two mountain crayfish (Cambarus conasauganensis) at the West Liberty University Crayfish Conservation Lab in West Liberty Virginia.
  • A critically endangered (IUCN) and federally endangered hawksbill turtle (Eretmochelys imbricata) at the XCaret Resort in Mexico.
  • Photo: Yellow-bellied house gecko (Hemidactylus flaviviridis) at Wroclaw Zoo.
  • Picture of an agile wallaby (Notamacropus agilis) at the Brevard Zoo in Melbourne, FL.
  • Photo: A wild caught unknown species of Katydid, collected in forest of Mt. Makiling, Luzon, Philippines.
  • Photo: A southern flying squirrel (Glaucomys volans) at Omaha's Henry Doorly Zoo.
  • Photo: Blue cheeked amazon, Amazona dufresniana, at Loro Parque Fundacion.
  • A picture of a group of young torresian crows (Corvus orru ceciliae) at Pelican and Seabird Rescue Inc. in Australia.
  • A Pennsylvania wood cockroach (Parcoblatta pennsylvanica) at the Saint Louis Zoo.
  • Photo: Great white or rosy pelican (Pelecanus onocrotalus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A plains minnow (Hybognathus placitus) photographed at Schramm Education Center, Gretna, Nebraska.
  • Photo: Alabama mini crayfish, unidentified species, from a private collection.
  • A North American beaver (Castor canadensis).
  • Photo: A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
  • Photo: Perforate reindeer lichen (Cladonia perforata) at Archbold Biological Station, Florida.
  • Photo: Amur ratsnake (Elaphe anomala) at Wroclaw Zoo.
  • Photo: A male Pacific eider (Somateria mollissima v-nigra) at Monticello Center in Italy.
  • Picture of a King's skink (Egernia kingii) at the Tulsa Zoo.
  • Picture of a fuzzy dwarf lionfish (Dendrochirus brachypterus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: An ancialine shrimp (anchialine rubra) at the Auburn University Natural History Museum.
  • Photo: A male Lesser Egyptian jerboa (Jaculus jaculus) named Osiris at the Philadelphia Zoo.
  • Picture of a North American Society Finch (Lonchura striata domestica) at the St. Louis Zoo in St. Louis, Missouri.
  • Photo: Chinstrap penguin (Pygoscelis antarctica) at the Newport Aquarium.
  • Picture of a chimney swift (Chaetura pelagica) at the WildCare Foundation.
  • Photo: A king vulture at the Sedgwick County Zoo.
  • Photo: Freshwater angelfish (Pterophyllum scalare), of Peru, at L'aquarium tropical du palais de la Porte DorŽe.
  • A picture of an endangered rhinoceros iguana (Cyclura cornuta cornuta) at Parco Natura Viva in Bussolengo, Italy.
  • Photo: A male red-footed falcon (Falco vespertinus) at Monticello Center in Italy.
  • Picture of a yellow-spotted wrasse (Macropharyngodon negrosensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • A picture of a school of sawfin shiners (Notropis sp. cf. spectrunculus) at Conservation Fisheries in Knoxville, Tennessee.
  • Photo: A Western green lizard (Lacerta bilineata) at Wroclaw Zoo in Poland.
  • Photo: A barred owl (Strix varia) at Raptor Conservation Alliance.
  • Picture of a western cattle egret (Bubulcus ibis ibis) at Goose Creek Wildlife Sanctuary,Inc., a wildlife rescue center in Tallahassee, Florida.
  • Photo: A three-tailed tiger swallowtail (Papilio pilumnus) at the Butterfly Pavilion.
  • A vulnerable (IUCN) Komodo dragon (Varanus komodoensis) at the Houston Zoo.
  • Photo: Scarab beetle (Carabus hortensis) at the Plzen Zoo in the Czech Republic.
  • A western fox snake (Elaphe vulpina vulpina).
  • An endangered (IUCN) and federally endangered Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis). This animal, named Lizzie, is one of only two captive animals of this species. She was brought in to the Arizona Sonora Desert Museum as an orphan along with a male squirrel, by USFWS, in 2004. There are now fewer than 100 MGRS living in the wild, making this one of the rarest mammals in North America.
  • Photo: Banded horned treefrog (Hemiphractus fasciatus) at El Valle Amphibian Center.
  • A picture of a mesic four-striped grass mouse (Rhabdomys dilectus diminutus) at the Plzen Zoo in the Czech Republic.
  • An Australian spiny devil (Extatosoma tiaratuma) at Omaha's Henry Doorly Zoo.
  • Photo: A Chaco tortoise (Chelonoidis chilensis) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • Photo: A king ratsnake (Elaphe carinata) at the Dallas Zoo.
  • Photo: Bluebreast darter (Etheostoma camurum) collected from Big Darby Creek near Circleville, OH.
  • Picture of a Hosmer's spiny-tailed skink (Egernia hosmeri) from the Tulsa Zoo.
  • A picture of a silver-eyed cat gecko (Aeluroscalabotes felinus felinus) at Conservation Fisheries.
  • Picture of a Cereopsis or Cape Barren goose (Cereopsis novaehollandiae) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of an American magpie (Pica hudsonia) at The Wildlife Center in Espanola, New Mexico.
  • Spotless stout newt (Pachytriton labiatus) at the Tennessee Aquarium.
  • Photo: A Kate’s leaf-tailed gecko (Saltuarius kateae) at the Plzen Zoo in the Czech Republic.
  • Photo: A double-collared seedeater (Sporophila caerulescens caerulescens) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a vulnerable (IUCN) and federally threatened Florida scrub jay (Aphelocoma coerulescens).
  • Photo: A female ruffed grouse (Bonasa umbellus monticola) photographed at a private collection in Elk River, Minnesota.
  • Photo: A South Philippines hawk-eagle (Nisaetus pinskeri) at the Philippine Eagle Center.
  • Gloyd’s cantil (Agkistrodon howardgloydi) at the St. Louis Zoo.
  • Photo: A fat-tailed scorpion (Hottentotta pellucidus) at Verve Biotech in Waverly, Nebraska.
  • Photo: A female ruff (Calidris pugnax) at Lundi Farm in Verl, Germany.
  • A federally endangered Mexican gray wolf (Canis lupus baileyi) at the Wild Canid Survival and Research Center.
  • Picture of a Zambezi flapshelled turtle (Cycloderma frenatum) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: An elephant hawk-moth (Deilephila elpenor elplenor) at Wildfowl and Wetlands Trust Slimbridge in Slimbridge, England.
  • Zulia's toad-headed turtle (Mesoclemmys zuliae) at Wroclaw Zoo. This species is listed as vulnerable by IUCN.
  • Photo: Two Polynesian tree snails (Partula hyalina) at the Zoological Society of London.
  • Photo: From the United Nations premier of Racing Extinction, featuring Photo Ark images.
  • Photo: Two banded mysterysnails (Callinina georgiana) from Round Island Creek in Alabama.
  • A picture of a Philippine cuckoo-dove (Macropygia tenuirostris tenuirostris) at the Avilon Zoo.
  • Southern crawfish frog (Lithobates (Rana) areolatus (areolata ssp.) photographed in a studio in Lincoln, NE.
  • 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.
  • Photo: Kira, a 12 year old short-eared dog (Atelocynus microtis) at the Taricaya Eco Reserve in Puerto Maldonado.
  • Photo: An oyster toadfish (Opsanus tau) at Loveland Living Planet Aquarium.
  • Photo: A dead leopard frog that had been hit and killed on the highway near Watertown, NY.
  • Photo: A male baby American badger (Taxidea taxus taxus) at Nebraska Wildlife Rehab in Omaha, Nebraska.
  • Photo: Gulf pipefish (Syngnathus scovelli) at the Oklahoma City Zoo.
  • A Mexican burrowing toad (Rhinophrynus dorsalis) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of astraea turbo snails (Astraea tecta) at Pure Aquariums.
  • Photo: A broad-billed roller (Eurystomus glaucurus) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A pyjama shark (Poroderma africanum) at Loveland Living Planet Aquarium.
  • Photo: Mayfly larvae (Cloeon simile) at Alpenzoo in Innsbruck, Austria.
  • Western hooded scaly-foot legless lizard (Pygopus nigriceps) at Lilydale High School in Australia.
  • Photo: A Fort Randolph robber frog (Pristimantis gaigei) at the Atlanta Botanical Garden.
  • Photo: A strawberry poison frog (Oophaga pumilio) at Josh’s Frogs in Owosso, Michigan.
  • Photo: An endangered southern elktoe (Alasmidonta triangulata) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Picture of a blue-faced parrotfinch (Erythrura trichroa) from a private collection.
  • Photo: A Jack Dempsey cichlid (Rocio octofasciata) from a private collection.
  • A robber frog (Eleutherodactylus sp.) near Mindo, Ecuador.
  • Photo: A female Franklin’s spruce grouse (Falcipennis canadensis franklinii) photographed at a private collection in Elk River, Minnesota.
  • Picture of the feet of an endangered (IUCN) and federally endangered Malayan tapir (Tapirus indicus).
  • Photo: A common barn owl (Tyto alba erlangeri) at Al Bustan Zoological Centre in the United Arab Emirates.
  • Photo: A rodent native to the cloud forest.
  • Photo: A Doherty`s thrush or chestnut-backed thrush (Zoothera dohertyi) from a private collection in Choussy, France.
  • A little ringed plover (Charadrius dubius curonicus) at Monticello Center in Italy.
  • Picture of a cattleheart butterfly (Parides iphidamas) at the Insectarium in New Orleans.
  • Picture of two extinct rockland skippers (mounted on pins) (Hesperia meskei pinocayo) at the McGuire Center for Lepidoptera and Biodiversity.
  • Photo: Peruvian green and gold millipede (Orthoporus sp.) at the Miller Park Zoo. Millipede is Greek for "a thousand legs", although they have more like 200.
  • Picture of a federally endangered Ozark hellbender (Cryptobranchus alleganiensis bishopi), infected with chytrid fungus, at the St. Louis Zoo, St. Louis, Missouri.
  • Photo: A Vietnamese walking stick (Baculum extradentatum) at the Kansas City Zoo.
  • Picture of a blue wood shrimp (Atya gabonensis) at Pure Aquariums.
  • Photo: A moustached parakeet (Psittacula alexandri fasciata) at Loro Parque Fundacion.
  • Photo: A unidentified snipe fly larvae (Rahagionidae sp.) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Photo: A tarantula (Ephebopus fossor) from a private collection.
  • A Halloween crab (Gecarcinus quadratus) at the Audubon Zoo in New Orleans, Louisiana.
  • Picture of a smallwood's anole (Anolis smallwoodi smallwoodi) at the Virginia Zoo.
  • A plain chachalaca (Ortalis vetula) from the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a female village weaver (Ploceus cucullatus) in non-breeding plumage at the LA Zoo.
  • A pair of eastern yellow-billed hornbills (Tockus flavirostris flavirostris) at the Indianapolis Zoo.
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at Josh’s Frogs in Owosso, Michigan.This individual is a 'Brazilian Yellow Head’ morph.
  • Photo: A southern flying squirrel (Glaucomys volans) at Omaha's Henry Doorly Zoo.
  • Photo: An endangered (IUCN) and federally endangered snow leopard (Panthera uncia) at the Miller Park Zoo.
  • A picture of a male brown-headed cowbird (Molothrus ater ater) in Fort Hood, Texas.
  • Photo: 'Nyango', the only confirmed Cross River gorilla (Gorilla gorilla diehli) in captivity in the world.
  • Photo: White tubercled crayfish, Procambarus spiculifer, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Peacock Creek, Flemington GA.
  • Photo: A juvenile Northern parula (Setophaga americana) at St. Francis Wildlife
  • Picture of a Saharan sand boa (Eryx muelleri) at the Virginia Aquarium.
  • A Chinese black coin turtle (Mauremys nigricans) at Missouri State University. (IUCN: Endangered)
  • Photo: Sacramento blackfish (Orthodon microlepidotus) at East Bay Regional Park District.
  • Photo: A cormorant (Phalacrocorax carbo carbo) at Hessilhead Wildlife Rescue.
  • Photo: A queen long-legged desert ant (Aphaenogaster cockerelli) at Butterfly Pavilion in Westminster, Colorado.
  • Slackwater darter (Etheostoma boschungi), an endangered (IUCN) and federally threatened species, at Conservation Fisheries, a native stream fish breeding center.
  • Photo: A granite night lizard (Xantusia henshawi) from a private collection in Billerbeck, Germany.
  • A picture of a mallard duckling (Anas platyrhynchos platyrhynchos) at Wildlife Rescue Team Inc. in Lincoln, Nebraska.
  • Photo: A longnose gar (Lepisosteus osseus) at the Schramm Education Center near Gretna, NE.
  • Photo: Green and red stink bug (Banasa dimidiata) at Cedar Point Biological Station.
  • Photo: Kanzi the Bonobo (Pan paniscus) at the Ape Cognition and Conservation Initiative (ACCI) in Des Moines, Iowa.
  • Photo: A screaming hairy armadillo (Chaetophractus vellerosus) at Parque de las Leyendas in Lima, Peru.
  • Photo: A king bird-of-paradise (Cicinnurus regius) at Walsrode Bird Park in Walsrode, Germany.
  • Picture of a Virginia opossum (Didelphis virginiana virginiana) with babies at the Nebraska Wildlife Rehab.
  • Arctic ground squirrel (Spermophilus parryii) at the University of Alaska at Fairbanks.
  • Photo: An American wolffish (Anarhichas lupus) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: A Kim Howell’s dwarf gecko (Lygodactylus kimhowelli) at Zagreb Zoo in Zagreb, Croatia.
  • Photo: The larvae of a Neptunus beetle (Dynastes neptunus) at the Toledo 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: A mourning gecko (Lepidodactylus lugubris) from a private collection.
  • Photo: An American crocodile (Crocodilus acutus) at the Omaha Zoo.
  • Photo: A mimic poison frog (Ranitomeya imitator) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A Costa Rican horned (Sphaerobothria hoffmanni) from a private collection.
  • A long-toed salamander (Ambystoma macrodactylum) at the Sunriver Nature Center, Deschutes County, Oregon.
  • Photo: A common scud (Melita nitida) from San Francisco Bay. Photographed at the East Bay Regional Parks Mobile Education Program.
  • Picture of a coastal carpet python (Morelia spilota mcdowelli) at the Wild Life Sydney Zoo.
  • Photo: A Northland green gecko (Naultinus grayii) at the Omaha Henry Doorly Zoo and Aquarium.
  • Photo: A red squirrel (Sciurus vulgaris fuscoater) at Zoopark Zajezd.
  • Photo: Checkered keelback or Asiatic water snake (Xenochrophis piscator) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A male Pacific pocket mouse (Perognathus longimembris pacificus) at San Diego Zoo Safari Park.
  • A picture of an endangered Puerto Rican crested toad (Peltophryne lemur) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A swimming crab (Achelous xantusii) at California Science Center in Los Angeles, California.
  • Picture of a blue-crowned motmot (Momotus momota) at Omaha's Henry Doorly Zoo and Aquarium.
  • Sand shrimp, Crangon septemspinosa, at the Sedge Island Natural Resource Education Center in the Sedge Islands Marine Conservation Zone, Barnegat Bay, New Jersey.
  • Photo: Razor-billed curassow (MItu tuberosum) at Melbourne Zoo.
  • An baby eyelash frog or Solomon island leaf frog (Ceratobatrachus guentheri) at Omaha's Henry Doorly Zoo.
  • Photo: A swan goose (Anser cygnoides) at the Miller Park Zoo. This species is listed as vulnerable on the IUCN Red List.
  • Picture of a migratory locust (Locusta migratoria) at the Auckland Zoo.
  • A Graells's black-mantled tamarin (Saguinus nigricollis graellsi) at Berlin Zoo.
  • Photo: An Eastern stone gecko (Diplodactylus vittatus) from a private collection.
  • Photo: A domestic rat at the George M. Sutton Avian Research Center.
  • Photo: Ringneck pheasant (Phasianus colchicus torquatus) at Cafam Zoo in Melgar, Colombia.
  • A plain chachalaca (Ortalis vetula) from the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A central Bornean orangutan named Trixie (Pongo pygmaeus wurmbii) at the Avilon Wildlife Conservation Foundation.
  • Photo: A male Jones’s silver pheasant (Lophura nycthemera jonesi) at a private collection.
  • An endangered Malayan tiger, Panthera tigris jacksoni, at the Omaha Zoo.
  • Photo: Bare-faced go-away-bird (Corythaixoides personatus leopoldi) in Choussy, France.
  • Photo: South American lungfish (Lepidosiren paradoxa) at Moscow Zoo.
  • Photo: Sand shiner (Notropis stramineus) at Cedar Point Biological Station.
  • Photo: Pacific lamprey (Entosphenus tridentatus) at the MK Nature Center in Boise, Idaho.
  • A western harris' hawk (Parabuteo unicinctus superior) named Hudson at The Living Desert in Palm Desert, California. He was once a show bird in Florida before coming here.
  • Photo: Pinto abalone (Haliotis kamtschatkana) coming out of shell at Alutiiq Pride Shellfish Hatchery in Seward, AK.
  • Photo: A female double-spurred francolin (Pternistis bicalcaratus) from a private collection.
  • Photo: A white sea pork (Didemnum candidum) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A bumblebee tarantula (Neoholothele fasciaaurinigra) from a private collection.
  • Photo: Gunther's catfish (Horabagrus brachysoma) at Zoo Negara.
  • A female, vulnerable African elephant (Loxodonta africana) at the Cheyenne Mountain Zoo.
  • Photo: A Northern sunfish (Lepomis peltastes) from a private collection in Knoxville, Tennessee.
  • A picture of a federally endangered juvenile Jamaican boa (Chilabothrus subflavus) from a private collection. This species is also listed as vulnerable by IUCN.
  • Picture of a four-horned chameleon (Chamaeleo quadricornis quadricornis) at the Saint Louis Zoo.
  • Photo: A male Seychelles yellow-bellied mud turtle (Pelusios castanoides intergularis) at Turtle Island.
  • Photo: A red-throated conure (Psittacara rubritorquis) named Kiki.
  • Photo: South temple pit viper (Tropidolaemus philippensis) at Davao Crocodile Park.
  • Photo: A longnose gar (Lepisosteus osseus) at the Schramm Education Center near Gretna, NE.
  • Malagasy Giant Chameleon (Furcifer oustaleti) at the Omaha Zoo.
  • A blotched or banded tiger salamander (Ambystoma mavortium melanostictum) at the National Mississippi River Museum and Aquarium, Dubuque, Iowa.
  • A picture of an endangered juvenile golden-mantled howler monkey (Alouatta palliata palliata) at Centro de Rescate Las Pumas in Cañas, Costa Rica.
  • Photo: A monacled cobra (Naga kauthia) at Reptile Gardens.
  • Picture of a male smew (Mergellus albellus) at Sylvan Heights Bird Park.
  • Photo: A tarantula (Citharacanthus cyaneus) from a private collection.
  • Photo: A Northern emerald-toucanet (Aulacorhynchus prasinus prasinus) at Emerald Forest Bird Gardens in Fallbrook, California.
  • Photo: A birds nest coral (Pinnigorgia sp.) at the Indianapolis Zoo.
  • Photo: A pallid bat (Antrozous pallidus pacificus) named Vesper at Lindsay Wildlife Experience in California.
  • A piping plover (Charadrius melodus). (US: Endangered)
  • Photo: Conservancy fairy shrimp (Branchinecta conservatio) at the Snobird Unit of the Merced National Wildlife Refuge.
  • A Platte River caddisfly (Ironoquia plattensis) in its larval stage.
  • A picture of an Angolan giraffe (Giraffa camelopardalis angolensis) at the Lisbon Zoo in Portugal.
  • Photo: A yellow banded pinktoe (Avicularia aurantiaca) at Museum of Nature South Tyrol.
  • A vulnerable, federally endangered blue-throated parakeet (Pyrrhura cruentata) at the Houston Zoo.
  • Picture of an endangered female Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Photo: Mountain parakeet (Psilopsiagon aurifrons aurifrons) at Loro Parque Fundacion.
  • A smooth green snake (Opheodrys vernalis) collected in Virginia.
  • Picture of a critically endangered (IUCN) and federally endangered gharial (Gavialis gangeticus) at the Gharial and Turtle Rehabilitation Center in Lucknow, India.
  • Photo: A bluefin killifish (Lucania goodei) from a private collection in Knoxville, Tennessee.
  • Photo: A great Mormon (Papilio memnon lowii) at Davao Butterfly House.
  • Photo: A Kate’s leaf-tailed gecko (Saltuarius kateae) at the Plzen Zoo in the Czech Republic.
  • A chipping sparrow (Spizella passerina arizonae) at the Brown Ranch, Texas.
  • Photo: A Senegal thick-knee (Burhinus senegalensis) at Sylvan Heights Bird Park in Scotland Neck, North Carolina.
  • Blanding's turtle (Emydoidea blandingii) at the Toledo Zoo.
  • Photo: A male ornate box turtle (Terrapene ornata ornata) at Nebraska Wildlife Rehab.
  • Photo: A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
  • Manchado, a Mexican spotted owl (Strix occidentalis lucida) at The Wildlife Center in Espanola, New Mexico.
  • Photo: Porcelain cockroach (Gyna lurida) at Wroclaw Zoo.
  • Photo: A federally endangered Snake River sockeye salmon (Oncorhynchus nerka) at the Eagle Fish Hatchery in Eagle, Idaho.
  • Photo: Kira, a 12 year old short-eared dog (Atelocynus microtis) at the Taricaya Eco Reserve in Puerto Maldonado.
  • Photo: A male and female pair of pied harrier (Circus melanoleucos) at the Avilon Zoo.
  • Photo: A male Eastern tree hyrax (Dendrohyrax arboreus stuhlmanni) at Zoo Plzeň in the Czech Republic.
  • Photo: A female Siberian crane (Leucogeranus leucogeranus) named Hagrid at the International Crane Foundation in Baraboo, Wisconsin.
  • Picture of a federally endangered and endangered (IUCN) Oriental stork (Ciconia boyciana) at the Suzhou Zoo.
  • Photo: A spectacled owl (Pulsatrix perspicillata perspicillata) at the Quistococha Zoo in Iquitos, Peru.
  • Photo: Two Tennessee red quail, a color mutation of the bobwhite quail (Colinus virginianus) photographed at Redmon Aviaries, Greenleaf, ID.
  • Photo: A desert eagle owl (Bubo ascalaphus desertorum) at the Dubai Safari Park in Dubai, United Arab Emirates.
  • Photo: A mottled owl (Ciccaba virgata superciliaris) at Parque Zoológico Huachipa in Lima, Peru.
  • Picture of a Sonoran mountain kingsnake (Lampropeltis pyromelana knoblochi) at the Caldwell Zoo in Tyler, Texas.
  • Blonde Madagascar hognose snake (Leioheterodon modestus) at the Omaha Zoo.
  • Photo: Two Western bluebills (Spermophaga haematina) from a private collection in St. Augustine, Florida.
  • Photo: A female wavy-rayed lampmussel (Lampsilis fasciola) at the Marion Conservation Aquaculture Center.
  • Photo: Two northern shrimp (Pandalus borealis) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of an Asian green broadbill (Calyptomena viridis caudacuta) in Choussy, France.
  • Photo: A male Tennessee logperch (Percina apina) from Brush Creek, downstream of the Little Brush Creek confluence in the Buffalo River system of Lewis County, Tennessee.
  • Photo: A Gambian epauletted fruit bat (Epomophorus gambianus) at the Plzen Zoo.
  • Photo: A western diamondback rattlesnake (Crotalus atrox) at Reptile Gardens.
  • Photo: A postman butterfly (Heliconius melpomene aglaope) at the Butterfly Pavilion.
  • Photo: Spikedace (Meda fulgida) at the Aquatic Research and Conservation Center.
  • Photo: Calico clam (Macrocallista maculata) at Gulf Specimen Marine Lab.
  • Photo: A black-necked weaver (Ploceus nigricollis) at the Zoological Society of London.
  • A grotto salamander (Eurycea spelaea) from the Tulsa Zoo.
  • Photo: Five Greater Bermuda land snails (Poecilozonites bermudensis) at the Zoological Society of London.
  • A magpie goose (Anseranas semipalmata) at the Kansas City Zoo in Missouri.
  • Picture of a bay duiker (Cephalophus dorsalis) named Billy Bob at the Ellen Trout Zoo.
  • Photo: An European robin (Erithacus rubecula rubecula) at Centro Fauna Selvatica "Il Pettirosso".
  • An Isla San Cristobal morph of the strawberry poison dart frog (Oophaga pumilio)
  • Photo: A Puerto Rican slider (Trachemys stejnegeri stejnegeri) at the Turtle Survival Center.
  • Photo: An Indian red scorpion (Hottentotta tamulus) at Verve Biotech in Waverly, Nebraska.
  • Photo: A prairie rattlesnake (Crotalus viridis viridis) at Reptile Gardens.
  • A critically endangered Celebes crested macaque (Macaca nigra) at Omaha's Henry Doorly Zoo and Aquarium.
  • A picture of a Gunnison's prairie dog (Cynomys gunnisoni zuniensis) at Liberty Wildlife.
  • A picture of a female Sri Lankan sloth bear (Melursus ursinus inornatus) at the Henry Doorly Zoo in Omaha.
  • Picture of a red-winged pytilia (Pytilia phoenicoptera) from a private collection.
  • A picture of a mallard duckling (Anas platyrhynchos platyrhynchos) at Wildlife Rescue Team Inc. in Lincoln, Nebraska.
  • Photo: A male common waterbuck (Kobus ellipsiprymnus ellipsiprymnus) at the Lisbon Zoo
  • Photo: Four-lined tree frog or common tree frog (Polypedates leucomystax) at the Singapore Zoo.
  • Picture of a halloween pennant dragonfly (Celithemis eponina) wild caught at Kissimmee Prairie Preserve State Park, Okeechobee, Florida.
  • A green and gold brittlestar (Ophiarachna incrassata) at the Indianapolis Zoo.
  • A gopher tortoise (Gopherus polyphemus) a vulnerable (IUCN) and federally threatened species at Zoo Atlanta.
  • Photo: A group of Indian eyed turtles (Morenia petersi) at Turtle Island
  • Photo: An Iberian toad (Bufo spinosus) at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Photo: Dollar sunfish (Lepomis marginatus) at the Cincinnati Zoo.
  • Picture of a West African lungfish (Protopterus annectens) at the Oklahoma City Zoo.
  • Photo: A white-throated woodrat (Neotoma albigula albigula) at Wildlife World Zoo, Aquarium & Safari Park in Litchfield Park, Arizona.
  • A forest hinge-back tortoise (Kinixys erosa) at the Houston Zoo.
  • Photo: A spot-bellied eagle owl (Bubo nipalensis blighi) at Tierpark Berlin.
  • Photo: A blue jay (Cyanocitta cristata bromia) near Hudson, Wisconsin, USA.
  • Picture of an endangered female Southern yellow-cheeked gibbon (Nomascus gabriellae) at the Singapore Zoo.
  • A shell of a dead winged mapleleaf mussel (Quadrula fragosa). The winged mapleleaf is critically endangered (IUCN) and federally endangered. This is one of 44 species of freshwater mussels still found in the upper Mississippi River near Prairie du Chien, WI.
  • A picture of a golden eagle (Aquila chrysaetos canadensis) at Tracy Aviary.
  • A picture of a female paradise shelduck (Tadorna variegata) at The Animal Sanctuary, an animal rehab center in Warkworth, New Zealand.
  • Photo: Mountain parakeet (Psilopsiagon aurifrons aurifrons) at Loro Parque Fundacion.
  • Photo: A Madagascar iguana (Chalarodon madagascariensis) at Zoopark Zajezd.
  • Sand shrimp, Crangon septemspinosa, at the Sedge Island Natural Resource Education Center in the Sedge Islands Marine Conservation Zone, Barnegat Bay, New Jersey.
  • Photo: A blue and white longwing (Heliconius cydno galanthus) at the Butterfly Pavilion.
  • Photo: A male white-winged crossbill (Loxia leucoptera leucoptera) from the Wildlife Rehabilitation Center of Minnesota.
  • Photo: Blue color phase of the red swamp crayfish (Procambarus clarkii) at the Insectarium in New Orleans.
  • Picture of a male red-legged honeycreeper (Cyanerpes cyaneus) at the Miller Park Zoo.
  • Photo: A juvenile armored katydid (Enyaliopsis petersii) at Gorongosa National Park, Mozambique.
  • Photo: Black-headed munia (Lonchura atricapilla) in Choussy, France.
  • Photo: An African thick-toed gecko (Pachydactylus rugosus) from a private collection.
  • Photo: A juvenile Sarawak blue-legged tarantula (Birupes simoroxigorum) at Verve Biotech in Waverly, Nebraska.
  • Photo: Endangered Cope's arboreal alligator lizard (Abronia aurita) at Urban Ark Conservation.
  • Photo: Lesser Bornean mousedeer (Tragulus kanchil klossi) at the Singapore Zoo.
  • Picture of a burrowing owl (Athene cunicularia troglodytes) from a private collection in the Dominican Republic.
  • Photo: A gidgee skink (Egernia stokesii) at Reptile Gardens.
  • A picture of a common ringtail possum (Pseudocheirus peregrinus pulcher) at the Taronga Zoo in Sydney, Australia.
  • Slackwater darter (Etheostoma boschungi), an endangered (IUCN) and federally threatened species, at Conservation Fisheries, a native stream fish breeding center. The male is colorful and much larger than the female.
  • A Guthega skink (Liopholis guthega) at the Healesville Sanctuary.
  • Photo: Savage's thin-toed frog (Leptodactylus savagei) at the El Valle Amphibian Conservation Center (EVACC).
  • Photo: A Mocquard's Madagascar ground gecko (Paroedura aff. bastardi) at the Plzen Zoo.
  • Photo: A male Enggano long-tailed parakeet (Psittacula longicauda modesta) at PT Anak Burung Tropikana in Bali, Indonesia.
  • A picture of a small Indian civet (Viverricula indica baptistae) at the Assam State Zoo in Guwahati, Assam, India.
  • Photo: A Chinese tiger-legged centipede (Scolopendra hainanum) at the Oakland Zoo.
  • Picture of a pair of crested partridges (Rollulus rouloul) at the Indianapolis Zoo.
  • Photo: A female groove-billed toucanet (Aulacorhynchus sulcatus sulcatus) at Emerald Forest Bird Gardens in Fallbrook, California.
  • Photo: Capped langur (Trachypithecus pileatus) at the Assam State Zoo in Guwahati, Assam, India.
  • A white rhinoceros (Ceratotherium simum simum) at Rolling Hills Wildlife Adventure in Salina, Kansas.
  • Picture of a grizzly bear (Ursus arctos horribilis) at the Sedgwick County Zoo.
  • Photo: A warty sea anemone, Bunodosoma cavernatum, at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: A juvenile red-necked grebe (Podiceps grisegena holbollii) at the Wildlife Rehabilitation Center of Minnesota in Roseville, Minnesota.
  • Karsten's girdled lizard (Zonosaurus karsteni) at the Omaha Zoo.
  • New Guinea snapping turtle (Elseya novaeguineae) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: Lonchodioides sp "NegrosÓ at the Budapest Zoo. This species is new to science.
  • Photo: A female Amano shrimp (Caridina multidentata) carrying eggs at a private collection in Gainesville, Florida.
  • A federally endangered Mexican gray wolf (Canis lupus baileyi) at the Wild Canid Survival and Research Center.
  • Photo: A male Bukhara urial (Ovis orientalis bochariensis) at the Management of Nature Conservation, Jebel Hafeet, Abu Dhabi, UAE.
  • Photo: A male Koklass pheasant (Pucrasia macrolopha) at Lundi Farm in Verl, Germany.
  • Photo: Thistle mantis (Blepharopsis mendica) at the Bugarium at the Albuquerque BioPark.
  • An Arizona tiger salamander (Ambystoma mavortium nebulosum) at the LA Zoo.
  • Photo: A Danube barbel (Barbus balcanicus) at Alpenzoo Innsbruck in Innsbruck, Austria.
  • Photo: A male Mrs. Hume's pheasant (Syrmaticus humiae humiae) at a private collection.
  • Photo: A spearpoint leaf-tail gecko (Uroplatus ebenaui) from a private collection.
  • Photo: A bar-shouldered dove (Geopelia humeralis) at Pinola Conservancy.
  • Photo: A Danube gudgeon (Gobio obtusirostris) at Alpenzoo Innsbruck in Innsbruck, Austria.
  • Photo: A male purple martin (Progne subis subis) at St. Francis Wildlife.
  • Picture of a banded sea star (Luidia alternata) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A buff ermine moth (Spilosoma lutea) at Wildfowl and Wetlands Trust Slimbridge in Slimbridge, England.
  • Photo: Walking stick (Phaenopharos khaoyaiensis) at the Budapest Zoo.
  • Photo: A walking stick (Megacrania phelaus) at Aquazoo Loebbecke Museum in Dusseldorf, Germany.
  • Photo: A female coppercheeck darter (Nothonotus aquali) from the Buffalo River at the mouth of Grinder’s Creek, Lewis County, Tennessee.
  • Photo: A honey badger (Mellivora capensis cottoni) at Tierpark Berlin.
  • A picture of a female long-horned bee (Melissodes sp.) photographed at a studio in Lincoln, NE.
  • A coyote (Canis latrans) at the Great Plains Zoo.
  • Photo: Squat lobster (Munida quadrispina) at Ripley's Aquarium of Canada.
  • A picture of a Bohemian waxwing (Bombycilla garrulus pallidiceps) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: A unidentified cranefly larvae (Tipulidae sp.) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Photo: A Canada goose (Branta canadensis moffitti) at Zoo Idaho, Pocatello, Idaho, USA.
  • Photo: Desert kissing bug (Triatoma rubida) at the Arizona-Sonora Desert Museum.
  • Photo: California newt (Taricha torosa) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Photo: A Guangdong frog (Hylarana macrodactyla) from the wild in Cambodia.
  • Red-eyed tree frog (Agalychnis callidryas) at the Miller Park Zoo. These frogs sit completely still all day long and blend in with the surrounding leaves. They have the ability to change the green tint of their skin to make it harder for predators to see them.
  • Photo: Giant grasshopper (Valanga nigricornis insularis) from the Melbourne Museum
  • Photo: Sponge (Placospongia) at Gulf Specimen Marine Lab and Aquarium.
  • A picture of an ocellated moray eel (Gymnothorax saxicola) at Gulf Specimen Marine Lab.
  • Picture of Rajah, an endangered male white Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • A young female snowy owl (Bubo scandiacus).
  • A cave salamander (Eurycea lucifuga) at Zoo Atlanta, Atlanta, Georgia.
  • A picture of a geometrid moth (Macrolyrcea moesta) at Fauna Andina at Fauna Andina, a conservation center near south-central Chile.
  • A Blue Ridge spring salamander (Gyrinophilus porphyriticus danielsi) at the Tennessee Aquarium, Tennesssee.
  • A picture of a stink bug (Euschistus sp.) at Spring Creek Prairie Audubon Center near Denton, NE. This animal was originally collected from Bobcat Prairie near Denton, NE
  • Photo: A Chinese bushmaster (Zhaoermia mangshanensis) at Reptile Gardens.
  • A desert grassland whiptail (Cnemidophorus or Aspidoscelis uniparens) at the Buffalo Zoo.
  • Picture of a vulnerable (IUCN) and federally threatened Atlantic loggerhead turtle (Caretta caretta) at Riverbanks Zoo.
  • Photo: Banded sculpin (Cottus carolinae) at the Fish Biodiversity Lab at Auburn University.
  • Picture of a vulnerable Philippine duck (Anas luzonica) at the Sylvan Heights Bird Park.
  • A Visayan common mormon (Papilio polytes ledebouria) at the Jumalon Butterfly Sanctuary on Cebu Island in the Philippines.
  • Photo: Black marsh crabs (Sesarma cinereum) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A male black howler monkey (Alouatta caraya) named ‘Tater’ at the John Ball Zoo.
  • Photo: An endangered timneh parrot (Psittacus timneh) at the Jurong Bird Park.
  • Photo: Tasselled Anglerfish (Rhycherus filamentosus) at the Dallas World Aquarium.
  • Picture of lake ducks (Oxyura vittata) at Sylvan Heights Bird Park.
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • Photo: A male Bullock's oriole (Icterus bullockii bullockii) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: Olive darter (Percina squamata) at Conservation Fisheries.
  • Photo: A pair of telescope shiners (Notropis telescopus) from a private collection in Knoxville Tennessee.
  • Photo: A Pampas cat or colocolo (Leopardus colocolo braccatus) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: Trout-perch (Percopsis omiscomaycus) at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: A San Joaquin kit fox (Vulpes macrotis mutica) at the Big Bear Alpine Zoo. This animal is named "Kit Kat”. This species is federally endangered.
  • Photo: An amber baboon tarantula (Harpactira cafreriana) from a private collection.
  • Photo: A male black-casqued wattled hornbill (Ceratogymna atrata) at the North Florida Wildlife Center.
  • Photo: A smallmouth grunt (Haemulon chrysargyreum) at the Tennessee Aquarium in Chattanooga, Tennessee.
  • Mearn's eastern cottontail rabbit (Sylvilagus floridanus mearnsii) at Nebraska Wildlife Rehab in Louisville, Nebraska.
  • Photo: Tasmanian yellow tailed black cockatoo (Calyptorhynchus funereus funereus) at Loro Parque Fundacion.
  • Photo: A New Zealand falcon (Falco novaeseelandiae) at the Kiwi Birdlife Park in Queenstown.
  • Photo: A male Peninsular Malaysian king cobra (Ophiophagus hannah) at Eco Animal Encounters in Whiteway, England.
  • A picture of a soprano pipistrelle, Pipistrellus pygmaeus pygmaeus, at Wildwood Trust near Canterbury, England.
  • Photo: California newt (Taricha torosa) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • A picture of an endangered (IUCN and US) golden-cheeked warbler (Setophaga chrysoparia) at Fort Hood, Texas.
  • Picture of an eastern mosquitofish (Gambusia holbrooki) at the US Geological Survey Southeast Science Center.
  • Photo: Long-tailed weasel (Mustela frenata altifrontalis) at the Wildlife Center of the North Coast in Astoria, Oregon.
  • A mossy leaf-tailed gecko (Uroplatus sikorae) at the LA Zoo.
  • Photo: A yellow-spotted agama (Trapelus flavimaculatus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.
  • Picture of a ring-necked spitting cobra (Hemachatus haemachatus) at the Dallas Zoo.
  • An ocelot (Leopardus pardalis) at the Omaha Zoo.
  • A small milkweed bug (Lygaeus kalmii).
  • Photo: A female lineated kalij pheasant (Lophura leucomelanos lineata) at Redmon Aviaries.
  • Picture of a red-faced parrot finch or red-throated parrotfinch (Erythrura psittacea) at Sylvan Heights Waterfowl Park.
  • Photo: A Endler’s livebearer (Poecilia wingei) photographed at Josh’s Frogs in Owosso, Michigan.
  • Photo: A juvenile red-footed booby (Sula sula) at Houston SPCA’s Wildlife Center of Texas.
  • Photo: A silkie bantam chicken at the Sunset Zoo.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Photo: An Indonesian giant sailfin dragon (Hydrosaurus microlophus) at Batu Secret Zoo and Eco Green Park in Batu, Indonesia.
  • Picture of a green pygmy goose (Nettapus pulchellus) from Sylvan Heights Waterfowl Park.
  • Photo: A male blue-striped ribbonsnake (Thamnophis sauritus nitae) from a private collection.
  • A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.
  • A picture of a male kalij pheasant (Lophura leucomelanos melanota) at the Padmaja Naidu Himalayan Zoological Park, in Darjeeling, India.
  • Photo: A broomtail wrasse (Cheilinus lunulatus) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • A Fea's viper (Azemiops feae) at the St. Louis Zoo.
  • Photo: Lady crab (Arenaeus cribrarius) at Gulf Specimen Marine Lab.
  • New Guinea snapping turtle (Elseya novaeguineae) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Picture of a red-lipped arboreal alligator lizard (Abronia lythrochila) at the Saint Louis Zoo.
  • Photo: A vulnerable banded palm civet (Hemigalus derbyanus) named Yala at the Cincinnati Zoo. Yala means "go" in Arabic, the keepers said, which is appropriate because this creature moved like greased lighting.
  • Photo: A Javan horned frog (Megophrys montana) at WWT Slimbridge in England.
  • A yellow-spotted Amazon river turtle (Podocnemis unifilis), at Zoo Atlanta. This animal is under IUCN vulnerable status.
  • Picture of a fork-tailed kite (Milvus migrans affinis) at the Healesville Sanctuary.
  • Photo: A wattle-necked softshell turtle (Palea steindachneri) at Turtle Island,
  • Photo: A longhorn sculpin (Myoxocephalus octodecemspinosus) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: A Southern brook lamprey (Ichthyomyzon gagei) from Hatchet Creek on the Coosa River Drainage near Goodwater, Alabama.
  • A vulnerable hyacinth macaw (Anodorhynchus hyacinthinus) at the Fort Worth Zoo.
  • Picture of a Florida waterdog (Necturus lodingi) from a private collection.
  • Photo: Amoreux' fat-tailed scorpion (Androctonus amoreuxi) at the University of Porto in Portugal.
  • Picture of a Yellow phase of the strawberry poison dart frog (Oophaga (Dendrobates) pumilio) at the National Aquarium in Baltimore.
  • Photo: A smooth butterfly ray (Gymnura micrura) at Gulf Specimen Aquarium in Panacea, FL.
  • Picture of a subtropical doradito (Pseudocolopteryx acutipennis) at the National Aviary of Colombia.
  • Photo: A spotfin shiner (Cyprinella spiloptera) from the Duck River in Tennessee.
  • A Livingstone's turaco (Tauraco livingstonii) at the Houston Zoo.
  • Photo: A unidentified snipe fly larvae (Rahagionidae sp.) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • A Pacific treefrog (Pseudacris regilla), common in the Cowichan Garry Oak Preserve, an extremely rare type of forest in Canada.
  • Photo: A Tanzanian blue leg centipede (Ethmostigmus trigonopodus) at Museum of Nature South Tyrol.
  • A banded flat rock scorpion (Hadogenes paucidens) at the Gladys Porter Zoo in Brownsville, Texas.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • A picture of a male, critically endangered Yangtze giant softshell turtle (Rafetus swinhoei) at the Suzhou Zoo in China.
  • Photo: A yellow Fiji leather coral (Sarcophyton elegans) at California Science Center in Los Angeles, California.
  • Photo: A tropical gar (Atractosteus tropicus) photographed at the ‘Gar Lab’ of the Nicholls State University.
  • Photo: A western screech owl (Magascops kennicottii bendirei) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: Amargosa speckled dace (Rhinichthys osculus nevadensis) collected on the Amargosa River in Tecopa, California.
  • Picture of a spotted whistling duck (Dendrocygna guttata) at the Sylvan Heights Bird Park.
  • Photo: An endangered Panama City crayfish (Procambarus econfinae) from the wild, caught near Panama City, Florida.
  • A green tree python (Morelia viridis) at the St. Louis Zoo.
  • A Florida cooter (Pseudemys floridana) at the Chapultepec Zoo in Mexico City.
  • An Allen's swamp monkey (Allenopithecus nigroviridis) at the Cleveland Metroparks Zoo.
  • Photo: Olive darter (Percina squamata) at Conservation Fisheries.
  • Photo: A hybrid Dusky lorikeet x yellow-streaked lorikeet at the Dallas Zoo. The bird's name is Pig Pen.
  • Photo: A Jameson's firefinch (Lagonostricta rhodopareia jamesoni) at a field museum in Gorongosa National Park.
  • A picture of a Sonora mud turtle (Kinosternon sonoriense longifemorale) at the Phoenix Zoo in Arizona.
  • Mountain short-horned lizard (Phrynosoma douglasii hernandesi) at the Albuquerque BioPark Aquarium.
  • Picture of a common black hawk (Buteogallus anthracinus subtilis) at the National Aviary breeding center.
  • Photo: An albino Manchurian hedgehog (Erinaceus amurensis) at Zoo Negara.
  • Photo: A green Madagascar girdled lizard, Zonosaurus haraldmeieri, at the Plzen Zoo.
  • A picture of a rough-legged hawk (Buteo lagopus sanctijohannis) at the Toledo Zoo.
  • Photo: Sanibel Island rice rat (Oryzomys palustris sanibeli) at Ding Darling National Wildlife Refuge on Sanibel Island, Florida.
  • Photo: A king bird-of-paradise (Cicinnurus regius) at Walsrode Bird Park in Walsrode, Germany.
  • Picture of a pale-bellied brent goose (Branta bernicla hrota) at Sylvan Heights Bird Park.
  • Photo: A blotched chub (Erimystax insignis), from a private collection in Knoxville, Tennessee.
  • Photo: Badge Huntsman (Neosparassus sp.) from the Melbourne Museum
  • Photo: A Togo starburst baboon tarantula (Heteroscodra maculata) at Omaha's Henry Doorly Zoo.
  • Fringe-limbed treefrog (Ecnomiohyla sp.) in Boise, Idaho
  • Photo: A striped love beetle (Eudicella gralli pauperata) at Aquarium Berlin.
  • Photo: Yellow flying stick (Necroscia annulipes) at the Budapest Zoo.
  • Photo: A fish crow (Corvus ossifragus) named “Minnow” at the Tennessee Aquarium.
  • Photo: A telescope shiner (Notropis telescopus) from a private collection in Knoxville Tennessee.
  • Picture of one-day-old black swans (Cygnus atratus) at Sylvan Heights Bird Park.
  • An endangered golden lion tamarin (Leontopithecus rosalia rosalia) at the Cheyenne Mountain Zoo.
  • Photo: A male Antilles gecko (Gonatodes antillensis) at Josh’s Frogs in Michigan.
  • Picture of a vulnerable (IUCN) and federally endangered, booming Attwater's Prairie Chicken (Tympanuchus cupido attwateri) at the Caldwell Zoo in Tyler, Texas.
  • Picture of a vulnerable Tucuman amazon (Amazona tucumana) at the Central Florida Zoo.
  • A crawfish (Procambarus sp.) at the Sedgwick County Zoo in Wichita.
  • A critically endangered (IUCN) and federally endangered Cuban crocodile (Crocodylus rhombifer).
  • Photo: Thistle mantis (Blepharopsis mendica) at the Bugarium at the Albuquerque BioPark.
  • Picture of a male pin-tailed whydah (Vidua macroura) at Sylvan Heights Waterfowl Park.
  • A vulnerable (IUCN) and federally endangered male mandrill (Mandrillus sphinx) at Rolling Hills Wildlife Adventure near Salina, Kansas.
  • A picture of a juvenile East Asian box turtle (Cuora amboinensis) at the Tennessee Aquarium.
  • Picture of a blue spotted pufferfish (Canthigaster solandri) at Pure Aquariums.
  • Photo: A female Faeroe Island eider (Somateria mollissima faeroeensis) at Lundi Farm in Verl, Germany.
  • A vulnerable female Eurasian griffon vulture (Gyps fulvus fulvus) named Nesher, which means Eagle in Hebrew.
  • Photo: A magnificent bird-of-paradise (Cicinnurus magnificus magnificus) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A male American rubyspot damselfly (Hetaerina americana) at Cedar Point Biological Station.
  • Photo: Perez's frog or Iberian waterfrog (Pelophylax perezi) at the Environmental Education Center of the Ribeiras de Gaia
  • Picture of a vulnerable long-tailed duck or oldsquaw (Clangula hyemalis) at Patuxent Wildlife Research Center.
  • Photo: A Sechuran fox (Pseudalopex sechurae) at Parque Zoológico Huachipa in Lima, Peru.
  • Photo: A marbled cat (Pardofelis marmorata longicaudata) at Al Bustan Zoological Centre in the United Arab Emirates.
  • A yellow-headed gecko (Gonatodes albogularis) from a private collection.
  • Picture of a blue peach-faced lovebird (Agapornis roseicollis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A male purple-throated fruitcrow (Querula purpurata) at the Dallas World Aquarium.
  • Photo: A gray color phase of the Eastern screech owl (Megascops asio) at the Wildlife Center of Texas in Houston.
  • Photo: A swimming crab (Achelous xantusii) at California Science Center in Los Angeles, California.
  • A blue-spotted salamander (Ambystoma laterale) at the National Mississippi River Museum and Aquarium, Dubuque, Iowa.
  • A tent tortoise (Psammobates tentorius verroxii) at the Fresno Chaffe Zoo.
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