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.

Explore the Photo Ark

Search the 42,837-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 13,438 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: Plains topminnow (Fundulus sciadicus) at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: Common gundi (Ctenodactylus gundi) at the Budapest Zoo.
  • A tree hyrax (Dendrohyrax dorsalis) from Bioko Island, Equatorial Guinea.
  • A Desert Iguana (Dipsosaurus dorsalis) at the Buffalo Zoo.
  • Photo: A hairy frog (Trichobatrachus robustus) from a private collection.
  • Photo: An American robin (Turdus migratorius migratorius) at Wild Bird Rehabilitation Inc. in St. Louis, Missouri.
  • Photo: An American wolffish (Anarhichas lupus) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of a yellow-billed stork (Mycteria ibis) at The Living Desert in Palm Desert, California.
  • A southern three-banded armadillo (Tolypeutes matacus) at the Lincoln Children's Zoo, Lincoln, Nebraska. (IUCN: Near Threatened)
  • Photo: Trinidad dwarf tiger (Cyriocosmus elegans) at the Moscow Zoo.
  • Photo: A female kelp goose (Chloephaga hybrida hybrida) at Lundi Farm in Verl, Germany.
  • A picture of a broadwing hawk (Buteo platypterus platypterus) at Raptor Recovery.
  • Photo: A male Mrs. Hume's pheasant (Syrmaticus humiae humiae) at a private collection.
  • Photo: A seminole crayfish (Procambarus seminolae) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • A smallmouth buffalo (Ictiobus bubalus) at Gavins Point National Fish Hatchery and Aquarium.
  • Picture of a conspicuous angelfish (Chaetodontoplus conspicillatus) at the Dallas World Aquarium.
  • A Javan leopard cat (Prionailurus javanensis javanensis) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Photo: A Mexican pink tarantula (Brachypelma klaasi) at Museum of Nature South Tyrol.
  • An Anegada Island iguana (Cyclura pinguis) at the San Diego Zoo, San Diego, California. This critically endangered (IUCN) and federally endangered species has just 200 left in the wild.
  • Picture of a purple sea urchin (Strongylocentrotus purpuratus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: Javan barking deer (Muntiacus muntjak muntjak) at Bali Zoo.
  • Photo: Desert patch-nosed snake (Salvadora hexalepis hexalepis) at the Arizona-Sonora Desert Museum.
  • Picture of an Arctic tern (Sterna paradisaea) at the Buttonwood Park Zoo in New Bedford, Massachusetts.
  • An endangered Coquerel's sifaka (Propithecus coquereli) at the Houston Zoo.
  • Photo: A CoggerÕs velvet gecko (Oedura coggeri) from a private collection.
  • Photo: A peacock pansy (Junonia almana) at Davao Butterfly House.
  • Photo: An endangered spiny turtle (Heosemys spinosa) at the Turtle Survival Center.
  • An endangered Malayan tiger, Panthera tigris jacksoni, at the Omaha Zoo.
  • Photo: A Southwest African lion (Panthera leo bleyenberghi) at the Lisbon Zoo. This species is listed as vulnerable by the IUCN.
  • Photo: A dingo (Canis lupus dingo) at Fort Wayne Children’s Zoo in Fort Wayne, Indiana.
  • Picture of an endangered Southern yellow-cheeked gibbon (Nomascus gabriellae) at the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam.
  • Photo: White-fronted woodpecker (Melanerpes cactorum) in Choussy, France.
  • Lowland burrowing treefrog or northern casque-headed frog (Smilisca fodiens) at the Arizona-Sonora Desert Museum.
  • Picture of an oriole blackbird (Gymnomystax mexicanus) at the National Aviary breeding center in Palmar, Colombia.
  • Matecho morph of a dyeing dart frog (Dendrobates tinctorius) from a private collection.
  • Photo: Striped kelpfish (Gibbonsia metzi) at East Bay Regional Park District.
  • Picture of a Julia butterfly (Dryas iulia largo) at the Insectarium in New Orleans, Louisisna.
  • Photo: A Peruvian red-snouted treefrog (Scinax ruber) near Puerto Maldonado, Peru.
  • Photo: A northern spring salamander (Gyrinophilus porphyriticus porphyriticus) at the Toledo Zoo.
  • A red-eyed tree frog (Agalychnis callidryas) at the Sunset Zoo in Manhattan, Kansas.
  • Photo: A Mozambique tree agama lizard (Agama mossambica) from the Mt. Gorongosa range of the Mt. Gorongosa National Park, Mozambique.
  • Trinidad Chevron taranchula (Psalmopoeus cambridgei) at the Henry Doorly Zoo and Aquarium.
  • Picture of the critically endangered, Pirre harlequin frog (Atelopus glyphus) at the Panama Amphibian Rescue and Conservation Project.
  • Photo: A gray catbird (Dumetella carolinensis meridianus) at Goose Creek Wildlife Sanctuary, Inc., a wildlife rescue center in Tallahassee, FL.
  • Picture of a vulnerable Malayan box turtle (Cuora amboinensis) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A female African hawk-eagle (Aquila spilogaster) at Zoopark Zajezd.
  • Peru marsupial frog (Gastrotheca peruana) at the National Aquarium in Baltimore.
  • Picture of a black swallowtail butterfly (Papilio polyxenes).
  • A desert massasauga (Sistrurus tergeminus edwardsii) at the Gladys Porter Zoo in Brownsville, Texas.
  • A vulnerable Strauch's spotted newt (Neurergus strauchii) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A male Sumba hornbill (Rhyticeros everetti) at Bali Bird Park in Bali, Indonesia.
  • A picture of an endangered Kanburian pitviper (Trimeresurus kanburiensis) at the San Antonio Zoo.
  • Photo: A short sea snake (Hydrophis curtus) at Al Mayya Sanctuary in Fujairah, United Arab Emirates.
  • Picture of a northwestern garter snake (Thamnophis sirtalis) at the Oregon Zoo.
  • Picture of a gopher snake (Pituophis catenifer affinis) at Springs Preserve.
  • Photo: Kimberly rock monitor (Varanus glauerti) at Wroclaw Zoo.
  • Picture of a spiny brittlestar (Ophiothrix spiculata) at the REEF, at the University of California, Santa Barbara.
  • Photo: A red-shafted flicker (Colaptes auratus cafer) at Nebraska Wildlife Rehab.
  • Photo: A banded rock rattlesnake (Crotalus klauberi) at Reptile Gardens.
  • A sturgeon chub (Macrhybopsis gelida) at the Nebraska Game & Parks Commission, Nebraska.
  • Picture of a vulnerable (IUCN) and federally endangered Attwater's prairie chicken (Tympanuchus cupido attwateri), also known as the greater prairie chicken, at the San Antonio Zoo.
  • Photo: White winged parakeet, brotogeris versicolurus, at Loro Parque Fundacion.
  • Photo: A Forrer's leafwing (Memphis forreri) at the Omaha Zoo.
  • Photo: A Javan crested serpent-eagle (Spilornis cheela bido) at Taman Mini Indonesia Indah.
  • Photo: Chinese oriole (Oriolus chinensis diffusus) in Choussy, France.
  • Photo: An Atlantic tarpon (Megalops atlanticus) at Gulf Specimen Marine Lab.
  • Photo: A lesser yellow-headed vulture (Cathartes burrovianus) at Tierpark Berlin.
  • Photo: A great spotted woodpecker (Dendrocopos major pinetorum) at the Plzen Zoo.
  • A pair of Australian rainbow lorikeets crossed with Forsten's lorikeets (Trichoglossus moluccanus x Trichoglossus forstenii) at the Indianapolis Zoo.
  • Photo: Yellow Fever mosquitos (Aedes aegypti) at the Urban Entomology Lab at the University of Florida at Gainesville.
  • Photo: Two blue-bellied cordonbleu or purple grenadier (Granatina ianthinogaster) from a private collection in Choussy, France.
  • A picture of a common ringtail possum (Pseudocheirus peregrinus pulcher) at the Taronga Zoo in Sydney, Australia.
  • Photo: A song sparrow (Melospiza melodia) at the Wildlife Rehabilitation Center of Minnesota.
  • Photo: An endangered Annamese Langur (Trachypithecus margarita) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Picture of a chipping sparrow (Spizella passerina) at St. Francis Wildlife Association, a wildlife rescue center near Quincy, Florida.
  • Photo: Bowfin (Amia calva) at the MN DNR Center for Aquatic Mollusk Programs.
  • Photo: Spiderman agama (Agama mwanzae) at the Houston Zoo.
  • Photo: Blue king shoemaker (Prepona omphale) at Butterfly Pavilion.
  • Photo: A pucayacu morph of the Darwin-Wallace poison dart frog (Epipedobates darwinwallacei) at Centro Jambatu in Quito, Ecuador.
  • Photo: A pair of white-breasted cormorants (Phalacrocorax lucidus) at the Audubon Zoo, part of the Audubon Nature Institute.
  • Photo: Slipper coral (Polyphyllia sp.) at Butterfly Pavilion.
  • A violet-backed starling (Cinnyricinclus leucogaster) at the Houston Zoo. Though bright purple in sunlight, this bird is extremely difficult to see in the shade of the forest.
  • Photo: Two Derby's flower beetles (Dicronorrhina derbyana layardi) at Zoopark Zajezd.
  • A picture of a fawn Sitka blacktail deer (Odocoileus hemionus sitkensis) at the Alaska Zoo.
  • A furrowed wood turtle (Rhinoclemmys areolata) at the Chapultepec Zoo in Mexico City.
  • Photo: Blue black spider wasp (Anoplius semicinctus) at Cedar Point Biological Station.
  • Photo: A ringed salamander (Ambystoma annulatum) at the Amphibian Foundation.
  • A picture of a young western gray squirrel (Sciurus griseus griseus) at Wildlife Images, an animal rehabilitation center near Merlin, Oregon.
  • Photo: A Mexican jumping pitviper (Metlapilcoatlus nummifer) at Reptile Lagoon in Hamer, South Carolina.
  • A musk ox (Ovibos moschatus moschatus) at the University of Alaska in Fairbanks, AK.
  • Photo: Western fence lizard (Sceloporus occidentalis) at Nebraska Wildlife Rehab.
  • Crested caracara (Caracara cheriway) at Tampa's Lowry Park Zoo.
  • A blotched or banded tiger salamander (Ambystoma mavortium melanostictum) at the National Mississippi River Museum and Aquarium, Dubuque, Iowa.
  • Photo: A male and female pair of dark-bellied brant geese (Branta bernicla) at Lundi Farm in Verl, Germany.
  • Photo: A southern sea otter (Enhydra lutris nereis) named Brook, age 19.
  • A western long-tailed hornbill (Horizocerus albocristatus) at the North Florida Wildlife Center in Lamont, Florida. His name is Einstein and as of 2020 he is between 13-15 years old.
  • A beaver-tailed agama (Xenagama batilifera) named Xena at The Living Desert in Palm Desert, California.
  • Photo: Black Kite (Milvus migrans lineatus) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • A shining flea beetle (Asphaera lustrans).
  • Snowy egret (Egretta thula) at the Lincoln Children's Zoo.
  • Picture of a spinifex hopping mouse (Notomys alexis) at the Wild Life Sydney Zoo.
  • Photo: Three female leopard geckos (Eublepharis macularius) at the Sunset Zoo in Manhattan, Kansas.
  • Photo: An Eastern hellbender (Cryptobranchus alleganiensis alleganiensis) at St. Louis Zoo. This facility is famous for rearing hellbenders, but also for studying cures for chytrid (bd) fungus and other threats.
  • A Parson's chameleon (Calumma parsonii) at the Houston Zoo.
  • Photo: Large fig parrot (Psittaculirostris desmarestii occidentalis) at Loro Parque Fundacion.
  • Photo: A male Cape eland (Taurotragus oryx oryx) at the Lisbon Zoo
  • Photo: An Ocellate mountain viper (Montivipera wagneri) at the St. Louis Zoo.
  • Photo: A green anaconda (Eunectes murinus) at Parque Zoológico Huachipa in Lima, Peru.
  • An African golden oriole (Oriolus auratus) at the Columbus Zoo.
  • Photo: A Pharaoh eagle-owl (Bubo ascalaphus) named Coll at The International Centre for Birds of Prey in England.
  • Photo: A pronghorn spiny lobster (Panulirus penicillatus) at Semirara Marine Hatchery Laboratory in the Philippines.
  • Photo: A Western smooth knob-tailed gecko (Nephrurus levis pilbarensis) from a private collection.
  • Photo: A white-speckled treefrog (Hyloscirtus albopunctulatus) at Balsa de los Sapos.
  • Photo: Blue backed parrots (Tanygnathus sumatranus sumatranus) at Loro Parque Fundacion.
  • Photo: A pufferfish (Canthigaster bennetti) at Petra Aqua.
  • Photo: Hasari, a federally endangered three-year-old cheetah (Acinonyx jubatus) at White Oak Conservation Center.
  • A Mexican milksnake (Lampropeltis triangulum annulata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A green snake (Philodryas olfersii olfersii) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: Bearded vulture (Gypaetus barbatus) at Parco Natura Viva.
  • Southern ringneck snake (Diadophis punctatus punctatus) at Cape Canaveral.
  • Photo: Halmahera giant gecko, Gehyra vorax, at the Plzen Zoo.
  • Photo: Ortmann's mudbug (Cambarus ortmanni) from the wild.
  • Nene geese (Branta sandvicensis) at the Great Plains Zoo, Sioux Falls, South Dakota. (IUCN: Vulnerable; US: Endangered)
  • Photo: A bandtail searobin (Prionotus ophryas) at the Audubon Aquarium of the Americas.
  • Photo: A critically endangered yellow-headed box turtle (Cuora aurocapitata dabieshani) at the Turtle Survival Center.
  • An Amethystine scrub python (Morelia amethistina) sheds his skin at the Omaha Zoo.
  • Photo: Sumba hornbill (Rhyticeros everetti) at Bali Bird Park in Bali, Indonesia.
  • A Choctawhatchee beach mouse (Peromyscus polionotus allophrys) a federally endangered rodent, at the USFWS office in Panama City, FL. This and several other beach mice subspecies are imperiled due to beach development.
  • Photo: A near threatened greater rhea (Rhea americana) at the Rome Zoo.
  • Photo: A red zebra cichlid (Maylandia estherae) from a private collection.
  • Photo: A Eurasian peregrine falcon (Falco peregrinus peregrinus) named Kate at The International Centre for Birds of Prey in England.
  • Photo: Asian red-tailed catfish (Hemibagrus nemurus) at Zoo Negara.
  • A critically endangered (IUCN) and federally endangered juvenile addax (Addax nasomaculatus) at the Buffalo Zoo.
  • Picture of a red-sided garter snake (Thamnophis sirtalis parietalis) at Reptile Gardens.
  • A mallard (Anas platyrhynchos) duckling.
  • Photo: A white-rumped shama (Kittacincla malabarica omissa) at Taman Mini Indonesia Indah.
  • Photo: A pygmy marbled newt (Triturus pygmaeus) at WWT Slimbridge in England.
  • Photo: A federally endangered roanoke logperch (Persina rex) at Conservation Fisheries.
  • An endangered Speke's gazelle (Gazella spekei) at the Indianapolis Zoo.
  • A pair of New Guinea singing dogs (Canis lupus hallstromi) at the Miller Park Zoo.
  • Picture of a male spot-billed toucanet (Selenidera maculirostris) at the Dallas World Aquarium.
  • Photo: An endangered male southern mountain reedbuck (Redunca fulvorufula fulvorufula) at Tierpark Berlin.
  • Photo: A Magellanic owl (Bubo magellanicus) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • A horsehair worm (Nematomorpha species).
  • Photo: A female, nineteen year old, eastern black rhinoceros named Bibi (Diceros bicornis michaeli) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A Anzamala Madagascar swift (Oplurus fierinensis) at the Plzen Zoo in the Czech Republic.
  • Photo: Central mudminnow (Umbra limi) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: A bigeye shiner (Notropis boops) at the Pontotoc Ridge Preserve near Connerville, OK.
  • White sucker (Catostomus commersonii) collected from the Rio Grande River near Albuquerque, New Mexico.
  • A meadowhawk dragonfly (Sympetrum sp.), near Crosslake, Minnesota.
  • Photo: A margay (Leopardus wiedii pirrensis) named Diego, at Zoologico de Quito.
  • Photo: A krait (Bungarus sindonus sindonus) at Reptile Gardens.
  • Photo: A whiptail cat (Hemiloricaria fallax) at the Dallas World Aquarium.
  • Photo: Mediterranean slipper lobster (Scyllarides latus) at the Lisbon Aquarium.
  • Photo: A tricolored parrot finch (Erythrura tricolor) from a private collection of Glen Holland.
  • Geoffroy's tufted-ear marmoset (Callithrix geoffroyi) at the Cleveland Metroparks Zoo.
  • Picture of an endangered Phayre's leaf monkey (Trachypithecus phayrei crepusculus) from the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam.
  • Picture of a Jambu fruit dove (Ptilinopus jambu) at the Brevard Zoo.
  • Picture of a rusty-margined guan (Penelope superciliaris) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: Giant grasshopper (Valanga nigricornis insularis) from the Melbourne Museum
  • Photo: A Tallapoosa shiner (Cyprinella gibbs) from Hillabee Creek, Tallapoosa River Drainage near Alexander City, Alabama.
  • Reunion Island day gecko (Phelsuma borbonica borbonica) at the Omaha Zoo.
  • Photo: Sun beetles (Pachnoda savignyi) at Parco Natura Viva in Bussolengo, Italy.
  • Photo: A rhinoceros auklet (Cerorhinca monocerata) at the Alaska SeaLife Center.
  • A Chinese big-headed turtle (Platystanon megacephalum shiui) at the Sedgwick County Zoo.
  • Flattened musk turtles (Sternotherus depressus) (IUCN: Vulnerable, US: Threatened) at the Tennessee Aquarium, Chattanooga, Tennessee.
  • Photo: Spotted tanager (Tangara punctata) at the Nashville Zoo.
  • Photo: A Roman’s saw-scaled viper (Echis leucogaster) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • Photo: Orange chinned parakeet (Brotogeris jugularis) at Loro Parque Fundacion.
  • Photo: Azara's agouti (Dasyprocta azarae) from the Budapest Zoo.
  • Picture of a female Socorro dove (Zenaida graysoni) named 'Doc' at the Tracy Aviary.
  • Photo: An Asian brown tortoise (Manouria emys) at the Cheyenne Mountain Zoo.
  • Photo: A white bellied sea eagle (Haliaeetus leucogaster) at the Jurong Bird Park.
  • Photo: A New Grenada cross-banded treefrog (Smilisca phaeota) at Balsa de los Sapos.
  • Picture of an endangered red panda (Ailurus fulgens fulgens) at the Lincoln Children's Zoo.
  • Photo: Changeable hawk-eagle (Nisaetus cirrhatus limnaeetus) at ACCB in Siem Reap, Cambodia.
  • Picture of an endangered Louisiana pine snake, (Pituophis ruthveni) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A Pampas cat or colocolo (Leopardus colocolo braccatus) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: An Atlantic rock crab (Cancer irroratus) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: Mosshead warbonnet (Chirolophis nugator) at the Alaska SeaLife Center in Seward, AK.
  • A White's tree frog (Pelodryas caerulea) at the Rolling Hills Wildlife Adventure.
  • Staghorn coral (Acropora muricata) at Omaha's Henry Doorly Zoo and Aquarium.
  • Picture of a grizzly bear (Ursus arctos horribilis) at the Sedgwick County Zoo.
  • A picture of a round-tailed ground squirrel (Xerospermophilus tereticaudus neglectus) at the Arizona-Sonora Desert Museum.
  • Photo: A great-tailed grackle (Quiscalus mexicanus prosopidicola) at Rogers Wildlife Rehabilitation in Hutchins, TX.
  • Picture of a critically endangered Kakapo (Strigops habroptilus) at Zealandia, in Wellington, New Zealand
  • Photo: A male angle-winged emerald moth (Chloropteryx tepperaria) at the E.W. Shell Fisheries Center.
  • Photo: Central mudminnow (Umbra limi) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: A teardrop Elimia (Elimia lachryma) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Picture of a pair of northern pintail ducks (Anas acuta) at the John Ball Zoo in Grand Rapids, Michigan.
  • A federally endangered light-footed clapper rail (Rallus longirostris levipes) at the Chula Vista Nature Center.
  • Photo: A Lucifer titi (Cheracebus lucifer) at the Quistococha Zoo in Iquitos, Peru.
  • Photo: A giant Chinese tree frog (Rhacophorus dennysi) at Reptile Gardens.
  • Walking stick (Sungaya inexpectata) at the Budapest Zoo.
  • Photo: Possibly a baby robin, from the home of wildlife rescuer in Lincoln, Nebraska.
  • Photo: Scottish wildcats (Felis silvestris grampia) at Wildcat Haven.
  • Photo: A black catfish (Synodontis nigrita) at Zoo Boise, Idaho, USA.
  • An endangered (IUCN) East African crowned crane (Balearica regulorum gibbericeps) at the Kansas City Zoo.
  • Photo: A two-day-old killdeer chick (Charadrius vociferus vociferus) at Rogers Wildlife Rehabilitation in Hutchins, TX.
  • Picture of a South Island pied oystercatcher, Haematopus finschi, at the Kiwi Birdlife Park in Queenstown, New Zealand.
  • Western screech owl (Megascops (Otus) kennicottii) at the Denver Zoo.
  • Photo: A pair of four-week-old old Asian leopard cats, (Prionailurus bengalensis bengalensis). These two were found abandoned by their mother a couple days ago in a burning field and brought to the Angkor Centre for Conservation of Biodiversity (ACCB), a wildlife rehab center in Siem Reap, Cambodia.
  • Picture of a vulnerable (IUCN) and federally endangered Western tragopan (Tragopan melanocephalus) at Himalyan Nature Park in Kufri, India.
  • Picture of an agile wallaby (Notamacropus agilis) at the Brevard Zoo in Melbourne, FL.
  • Photo: A brambling (Fringilla montifringilla) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: A chukar partridge (Alectoris chukar) at Redmon Aviaries.
  • A white-necked myna (Streptocitta albicollis) at the Houston Zoo.
  • Photo: A naked mole rat (Heterocephalus glaber) at the Lincoln Children's Zoo.
  • Photo: A whirlabout skipper (Polites vibex) at Tall Timbers Research Station and Land Conservancy in Tallahassee, Florida.
  • A giant jumping stick (Stiphra sp.) at the St. Louis Zoo's Monsanto Insectarium.
  • Japanese angelfish (Centropyge interrupta) at the Dallas World Aquarium.
  • Speckled rattlesnake (Crotalus mitchellii) at the Arizona-Sonora Desert Museum.
  • Photo: Pacific lamprey (Entosphenus tridentatus) at the MK Nature Center in Boise, Idaho.
  • Photo: Aknot, a five-year-old Gunnison’s prairie dog (Cynomys gunnisoni) photographed in Utah.
  • Relict darter (Etheostoma chienense) a federally threatened species at Conservation Fisheries, a native stream fish breeding center.
  • Photo: A female red-capped cardinal (Paroaria gularis cervicalis) at the Miller Park Zoo in Bloomington, Illinois.
  • A Mississippi sandhill crane (Grus canadensis pulla) at the Audobon Nature Institute, New Orleans, Louisiana.
  • Picture of a bateleur eagle (Terathopius ecaudatus) at the Houston Zoo.
  • Photo: A great-tailed grackle (Quiscalus mexicanus prosopidicola) at Rogers Wildlife Rehabilitation in Hutchins, TX.
  • Photo: A little bittern (Ixobrychus minutus) at the Plzen Zoo.
  • Picture of a Rose sea star, Crossaster papposus, at the Alaska SeaLife Center.
  • Photo: Lowland leopard frog (Lithobates yavapaiensis) at the Arizona-Sonora Desert Museum.
  • Photo: A Leptiens spiny-tailed lizard (Uromastyx aegyptia leptieni) at the Bristol Zoo.
  • Picture of South-American comb ducks (Sarkidiornis melanotos sylvicola) at Sylvan Heights Bird Park.
  • Photo: A dwarf white isopod (Trichorhina tomentosa) photographed at Josh’s Frogs in Owosso, Michigan.
  • Photo: A plains least weasel (Mustela nivalis campestris) at Nebraska Wildlife Rehab.
  • Picture of broad-headed skinks (Plestiodon laticeps) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A female slaty skimmer dragonfly (Libellula incesta) caught in the Tide Swamp Unit of Big Bend Wildlife Management Area.
  • Photo: A Wagler’s temple viper (Tropidolaemus wagleri) at the Fort Worth Zoo.
  • Photo: Male banded newt (Triturus vittatus ophryticus) at the Moscow Zoo.
  • Photo: Two black-faced quailfinch (Ortygospiza atricollis) at the Zoo Berlin.
  • Photo: A proboscis monkey (Nasalis larvatus) at the Singapore Zoo.
  • A humpback chub (Gila cypha), from the Colorado River. (US: Endangered; IUCN: Endangered)
  • A federally endangered Salt Creek tiger beetle (Cicindela nevadica lincolniana) in a lab at the University of Nebraska-Lincoln. With a count of fewer than 250 adults in the summer of 2007, this subspecies of tiger beetle could be the rarest insect in North America. Found only in the interior saline wetlands of Lancaster County, Nebraska, the beetle has been in decline for years due to habitat loss from development.
  • A juvenile bull trout (Salvelinus confluentus) from Bighorn Creek, part of the Kootenay River system. (IUCN: Vulnerable; US: Federally threatened)
  • Photo: A mountain horned dragon (Acanthosaura crucigera) from the Fish N Stuff pet store in Yankton.
  • Picture of a Scott's wrasse (Cirrhilabrus scottorum) at the Nebraska Aquatic Supply.
  • Photo: Victoria forest tree frog (Leptopelis boulengeri) from Bioko Island, Equatorial Guinea.
  • Photo: A brown-mandibled aracari (Pteroglossus azara mariae) at Parque de las Leyendas in Lima, Peru.
  • Photo: Narrow-banded blue swallowtail (Papilio nireus) at Butterfly Pavilion.
  • A many-horned adder (Bitis cornuta).
  • A greater roadrunner (Geococcyx californianus) at the Sutton Avian Research Center, Bartlesville, Oklahoma.
  • A Muscovy duck name Joelle (Cairina moschata moschata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A willow grouse (Lagopus lagopus lagopus) at Lundi Farm in Verl, Germany.
  • Photo: A Central American margay (Leopardus wiedii nicaraguae) at Tierpark Berlin.
  • A splash-backed poison dart frog (Adelphobates galactonotus) at Omaha's Henry Doorly Zoo.
  • A terciopelo (Bothrops asper) at the Cincinnati Zoo.
  • Picture of a harlequin bass (Serranus tigrinus) at Pure Aquariums.
  • A saw-shelled turtle (Myuchelys latisternum) at the Australia Zoo Wildlife Hospital.
  • Picture of a Temminck's tragopan (Tragopan temminckii) from Sylvan Heights Waterfowl Park.
  • An Indian rhinoceros (Rhinoceros unicornis) at the Rolling Hills Wildlife Adventure. (IUCN: Endangered)
  • Photo: Surgeon crayfish (Orconectes forceps) at Conservation Fisheries.
  • Picture of a bicolor dottyback (Pictichromis paccagnellae) at Pure Aquariums.
  • Photo: A blue rice coral (Montipora flabellata) at California Science Center in Los Angeles, California.
  • Photo: Darkling beetle larvae (Zophobas morio) at Centro Jambatu in Quito, Ecuador.
  • Photo: A New Caledonia giant gecko (Rhacodactylus leachianus) at Reptile Gardens.
  • Photo: A black redhorse (Moxostoma duquesnei) at the Oklahoma Aquarium.
  • Big-headed rainfrog or big-headed robber frog (Craugastor megacephalus) at Zoo Atlanta. This species is primarily from Panama.
  • A long-snouted robber frog (Pristimantis appendiculatus) near Mindo, Ecuador.
  • A portrait of a federally endangered peregrine falcon (Falco peregrinus).
  • Photo: A creeper mussel (Strophitus undulatus) at the Marion Conservation Aquaculture Center.
  • A captive, five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea. (IUCN: Vulnerable)
  • Photo: A salmon-crested cockatoo at the Sedgwick County Zoo.
  • 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.
  • Picture of a regal fritillary (Speyeria idalia) at the Minnesota Zoo.
  • Picture of a female Brazilian teal or Brazilian duck (Amazonetta brasiliensis) at the Caldwell Zoo in Tyler, Texas.
  • Bolkar viper (Montivipera bulgardaghica) at the St. Louis Zoo.
  • A foam nesting frog (Chiromantis xerampelina) at the Phoenix Zoo.
  • Photo: Moellendorf's ratsnake (Orthiophis moellendorffi) at the Plzen Zoo.
  • Picture of a six-banded armadillo (Euphractus sexcinctus) at the Cincinnati Zoo.
  • Photo: A ferruginous hawk (Buteo regalis) at the Sutton Avian Research Center.
  • A speckled sea trout (Cynoscion nebulosus) at Gulf Specimen Marine Lab and Aquarium.
  • Common spider crab, also known portly spider crab or nine-spined spider crab (Libinia emarginata), with red beard sponge that it has attached to its shell at the Sedge Island Natural Resource Education Center in the Sedge Islands Marine Conservation Zone, Barnegat Bay, New Jersey.
  • A wild caught pygmy grasshopper (Hymenotes triangularis) from Mt. Makiling forest in Luzon, Philippines.
  • Photo: Warmouth (Lepomis gulosus) at Welaka National Fish Hatchery Aquarium.
  • Photo: A white-backed mousebird (Colius colius) at the Dallas Zoo.
  • Photo: A Gabon Talapoin ( Miopithecus ogouensis) at Wroclaw Zoo.
  • Photo: An eastern blacknose dace (Rhinichthys atratulus) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Photo: A Andean milk snake (Lampropeltis triangulum andesiana) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Monarch butterflies (Danaus plexippus) from Sierra Chincua, Mexico.
  • Photo: Blackeye goby (Rhinogobiops nicholsii) at Ripley's Aquarium of Canada.
  • Photo: A sauger (Sander canadensis) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • A picture of a nine-banded armadillo (Dasypus novemcinctus mexicanus) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Photo: An executioner frog (Dendropsophus carnifex) at Balsa de los Sapos.
  • Photo: A juvenile flathead catfish (Pylodictis olivaris) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • A largescale stoneroller (Campostoma oligolepis).
  • Picture of a Malagasy cat eyed snake (Madagascarophis colubrinus) at the Knoxville Zoo.
  • Picture of a four-week old, male leopard cat (Prionailurus bengalensis chinensis).
  • Photo: An endangered (IUCN) and federally endangered snow leopard (Panthera uncia) at the Miller Park Zoo.
  • Picture of a blue-faced parrotfinch (Erythrura trichroa) from a private collection.
  • Photo: Italian fire salamander, Salamandra salamandra gigliolii, at Parco Natura Viva.
  • Picture of a greater flamingo (Phoenicopterus roseus) named Pauly, age 15, at the LA Zoo.
  • Photo: Savanna monitor lizard (Varanus exanthematicus) at the Denver Zoo.
  • Atelopus nanay at a captive breeding at Pontificia Universidad Catolica in Quito, Ecuador. This animal is critically endangered and very well could be extinct in the wild. Only seven animals are in captivity. (IUCN: CR)
  • A lesser kudu (Ammelaphus imberbis) at Zoo Atlanta.
  • Nikolsky's viper (Vipera nikolskii) at the St. Louis Zoo.
  • Picture of an ocellated turkey (Meleagris ocellata) at the Dallas World Aquarium.
  • Photo: An endangered Appalachian elktoe mussel (Alasmidonta raveneliana) at the Marion Conservation Aquaculture Center.
  • Photo: A rainbow shiner (Notropis chrosomus) at Fish Biodiversity Lab, Auburn University, Auburn, Alabama.
  • Photo: A cottonmouth snake (Agkistrodon piscivorus) at the Houston Zoo, Houston, Texas.
  • A vulnerable (IUCN) Madagascar painted frog (Mantella madagascariensis) from a private collection.
  • A cyprinid fish (Mystacoleucus marginatus) at Zoo Negara.
  • A tufted puffin (Fratercula cirrhata) at the Omaha Henry Doorly Zoo, in Omaha, Nebraska.
  • Picture of a western spotted skunk (Spilogale gracilis gracilis) at Utah's Hogle Zoo in Salt Lake City, Utah.
  • Photo: An Ethiopian mountain viper (Bitis parviocula) at Zoo Atlanta.
  • Picture of a tri-colored bat (Perimyotis subflavus).
  • Arizona mountain kingsnake (Lampropeltis pyromelana pyromelana) at the Tulsa Zoo.
  • Photo: Pacific red hermit crab (Elasdochirus gilli) and whitehand hermit crab (Elassochirus tenuimanus) at the Alaska SeaLife Center.
  • Arizona treefrog (Hyla wrightorum) at the Arizona-Sonora Desert Museum.
  • Picture of common goldeneye ducks (Bucephala clangula) at Sylvan Heights Bird Park.
  • A picture of a least sandpiper (Calidris minutilla) at Iowa Bird Rehabilitation in Des Moines, IA.
  • Picture of a Fischer's Turaco (Tauraco fischeri) at the Dallas World Aquarium.
  • Photo: Pygmy catfish (Corydoras pygmaeus) from a private collection.
  • Photo: A Ganges soft shelled turtle (Nilssonia gangetica) at the Gharial and Turtle Rehabilitation Center in Lucknow, India.
  • Photo: A rock ptarmigan (Lagopus muta millaisi) at Lundi Farm in Verl, Germany.
  • A picture of a black-tailed prairie dog (Cynomys ludovicianus ludovicianus) at Zoo Atlanta.
  • A mudpuppy (Necturus maculosus) at the Genoa National Fish Hatchery.
  • Photo: Plain sculpin (Myoxocephalus jaok) at the Alaska SeaLife Center in Seward, AK.
  • Photo: An acorn woodpecker (Melanerpes formicivorus bairdi) at the Big Bear Alpine Zoo. This bird’s name is Narwhal.
  • Photo: Sonoyta mud turtle (Kinosternon sonoriense longifemoralis) at the Arizona-Sonora Desert Museum.
  • Photo: Common loon (Gavia immer) in winter plumage at International Bird Rescue Center.
  • Red-spotted toad (Anaxyrus punctatus) at the Arizona-Sonora Desert Museum.
  • Picture of a polyphemus moth caterpillar (Antheraea polyphemus) at the Minnesota Zoo.
  • An albino monocled cobra (Naja kaouthia) at the Omaha Henry Doorly Zoo.
  • Picture of a male Himalayan monal pheasant (Lophophorus impejanus) at Pheasant Heaven, a private pheasant breeding center near Clinton, NC.
  • Photo: A Peters' banded skink (Scincopus fasciatus) at Petra Aqua.
  • A vulnerable (IUCN) Madagascar painted frog (Mantella madagascariensis) from a private collection.
  • Photo: A female Canada spruce grouse (Falcipennis canadensis canace) at Grouse Park Waterfowl in Cascade, Idaho.
  • Photo: A male black-backed radjah shelduck (Radjah radjah radjah) at WWT Slimbridge in England.
  • Photo: Flower beetle (Pachnoda abyssinica) at the Moscow Zoo.
  • A marsupial frog (Gastrotheca cuencana) at a captive breeding facility in Ecuador. Formerly known as Azuay marsupial frog (Gastrotheca litonedis).
  • Photo: A mangrove snake (Boiga dendrophila divergens) at Zoo Plzeň.
  • Photo: A painted bronzeback (Dendrelaphis pictus) at the Plzen Zoo in the Czech Republic.
  • Photo: Female giant lime green stick insect (Diapherodes gigantea) at the Exmoor Zoo.
  • Spot croaker (Leiostomus xanthurus) at the Virginia Aquarium.
  • Photo: An European greenfinch (Carduelis chloris aurantiiventris) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: Budwing mantis (Parasphendale affinis) at the Budapest Zoo.
  • A picture of a cichlid (Ptychochromis grandidieri) at L'aquarium tropical du palais de la Porte DorŽe.
  • 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 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: A royal diadem rat snake (Elaphe diadema) at Reptile Gardens.
  • A picture of an Eastern indigo snake, Drymarchon couperi, at the Toledo Zoo. This species is federally threatened.
  • Photo: A large earthworm from Cuc Phuong National Park, Vietnam.
  • Picture of a California sea hare (Aplysia californica) at the REEF, at the University of California, Santa Barbara.
  • A Tuxtlan jumping pitviper or Olmecan pitviper (Atropoides olmec) at the Chapultepec Zoo, Mexico City, Mexico.
  • A desert grassland whiptail (Cnemidophorus or Aspidoscelis uniparens) at the Buffalo Zoo.
  • Photo: A tiger moth (Apantesis nais) near Lakeside, NE.
  • Armenian viper (Montivipera raddei) at the St. Louis Zoo.
  • Photo: An unidentified green-winged stonefly nymph (Isoperla sp.), aquatic invertebrate from Mores Creek near Idaho City, Idaho.
  • Photo: An Indian silverbill (Euodice malabarica) at Butterfly World.
  • Photo: A Mauritius ornate day gecko (Phelsuma ornata) at Josh’s Frogs in Michigan.
  • Photo: Hooded crow (Corvus cornix) from the Budapest Zoo.
  • Photo: A rock squirrel (Otospermophilus variegatus grammurus) at the Wildlife Center of New Mexico.
  • Picture of a four-week old, male leopard cat (Prionailurus bengalensis chinensis).
  • Picture of a band-tailed guan (Penelope argyrotis) at the National Aviary breeding center.
  • Photo: A Golden-collared toucanet (Selenidera reinwardtii) at Parque de las Leyendas in Lima, Peru.
  • A pair of eastern yellow-billed hornbills (Tockus flavirostris flavirostris) at the Indianapolis Zoo.
  • A pair of vulnerable 1-year-old fossas, Cryptoprocta ferox, at the Omaha Zoo. This is Madagascar's largest mammalian predator, and it's numbers are declining in the wild.
  • Photo: A broadstripe shiner (Pteronotropis euryzonus) at Fish Biodiversity Lab, Auburn University, Auburn, Alabama.
  • Photo: Common carp (Cyprinus carpio) at the Fish Conservation and Culture Lab in Byron, CA at UC Davis.
  • Photo: A common burying beetle (Nicrophorus marginatus) at the St. Louis Zoo.
  • Photo: Green katydid (Arantia accrana) from Bioko Island, Equatorial Guinea.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild)
  • Picture of a Almirante morph of a strawberry poison frog (Oophaga pumilio) from a private collection.
  • Photo: A female Cameroon dwarf chameleon (Trioceros camerunensis) from a private collection.
  • A picture of a night snake (Hypsiglena ochrorhyncha klauberi) at the Arizona-Sonora Desert Museum.
  • Picture of a black-headed munia (Lonchura malacca) from a private collection.
  • Photo: A Bibron's gecko (Pachydactylus bibroni) at Reptile Gardens.
  • A male chestnut sparrow (Sorella eminibey) at Safari Park Dvur Kralove.
  • Photo: An endangered Pearl River map turtle, Graptemys pearlensis, at the Turtle Survival Center.
  • Photo: A female golden-winged warbler (Vermivora chrysoptera) at a bird banding and release site near Hudson, WI.
  • Photo: A West African green mamba (Dendroaspis viridis) at Reptile Gardens.
  • Photo: A wild caught unidentified crab spider from Mt. Makiling forest in Luzon, Philippines.
  • Timor python (Python timoriensis) at the Detroit Zoo.
  • Photo: A rock hyrax (Procavia capensis capensis) at Hogle Zoo in Salt Lake City, Utah.
  • Photo: An endangered Sakaramy killifish (Pachypanchax sakaramyi) at Denver Zoo.
  • Photo: A West African green mamba (Dendroaspis viridis) at Reptile Gardens.
  • A Cope's treefrog (Hyla chrysoscelis) caught in the wild near Dunbar, Nebraska.
  • Photo: Horseface blenny (Ophioblennius steindachneri) photographed at Downtown Aquarium in Denver, Colorado.
  • Photo: Stick insect (Sipyloidea biplagiata) at the Moscow Zoo.
  • Vulnerable (IUCN) and federally threatened Chiricahua leopard frogs (Lithobates chiricahuensis) at the Phoenix Zoo, Phoenix, Arizona.
  • Picture of a vermilion cardinal (Cardinalis phoeniceus) at the National Aviary of Colombia.
  • Photo: A rock hyrax (Procavia capensis habessinicus) from a private collection.
  • A picture of a geometrid moth (Macrolyrcea moesta) at Fauna Andina at Fauna Andina, a conservation center near south-central Chile.
  • Photo: Four-week-old caracal kittens (Caracal caracal caracal) at the Nashville Zoo at Grassmere in Nashville, Tennessee.
  • Photo: A scorpion mud turtle (Kinosternon scorpiodes) at the Chapultepec Zoo in Mexico City.
  • A small-mouthed salamander (Ambystoma texanum) from a private collection.
  • Photo: Puff-faced water snake (Homalopsis buccata) at the Singapore Zoo.
  • Photo: A crested eagle (Morphnus guianensis) at Zoologico de Quito.
  • Photo: A Philippine hanging-parrot (Loriculus philippensis worcesteri) at Farmville de Bago, a private collection in the Philippines.
  • Photo: Sonoran opossum (Didelphis virginiana californicus) from a private collection.
  • Photo: A water monitor (Varanus salvator salvator) at Parco Natura Viva in Bussolengo, Italy.
  • 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.
  • A federally threatened North American black bear (Ursus americanus) at Omaha Zoo's Wildlife Safari Park.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Photo: A green iguana (Iguana iguana) at the Kansas City Zoo.
  • A West African screeching frog (Arthroleptis poecilonotus) from Bioko Island, Equatorial Guinea.
  • Photo: A copperhead racer (Coelognathus radiatus) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • A picture of a Pacific boa (Candoia carinata carinata) at the Wroclaw Zoo.
  • Photo: A male wolf spider (Schizocosa uetzi) from the University of Nebraska-Lincoln.
  • Photo: Baby muskrat (Ondatra zibethicus) at the Wildlife Rehabilitation Center of Minnesota.
  • Photo: A northern grasshopper mouse (Onychomys leucogaster articeps) photographed at Platte River Prairies, Woodriver, Nebraska.
  • A Cachabi robber frog (Pristimantis achatinus) near Limon, Ecuador.
  • Photo: A northern water snake (Nerodia sipedon) from a private collection.
  • Photo: Asian flower beetle (Agestrata orichalca) at the Insectarium in New Orleans.
  • Yellow-edged Giant Owl or Magnificent Owl (Caligo atreus) at the Henry Doorly Zoo and Aquarium.
  • A yellow-fronted canary (Crithagra mozambicus mozambicus) from Chitengo Camp, Gorongosa National Park.
  • Photo: A warty sea anemone, Bunodosoma cavernatum, at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: West Cuban anole, Anolis bartschi, at the Plzen Zoo.
  • Photo: An ornate reef sea snake (Hydrophis ornatus) photographed at Al Mayya Sanctuary.
  • Photo: A jungle crow (Corvus macrorhynchos macrorhynchos) at Taman Mini Indonesia Indah.
  • Photo: An olive sunbird (Cyanomitra olivacea obscure) from Gorongosa, Mozambique.
  • A pied crow (Corvus albus) at Ocean Park in Hong Kong.
  • A diamond darter (Crystallaria cincotta), a critically endangered fish from the southeastern U.S. at Conservation Fisheries.
  • Photo: Indian star tortoises (Geochelone elegans) at the Taronga Zoo.
  • Photo: A Chinese giant salamander (Andrias davidianus), at Omaha’s Henry Doorly Zoo and Aquarium in Omaha, Nebraska.
  • A common grackle (Quiscalus quiscula).
  • Photo: A male broad-tailed hummingbird (Selasphorus platycercus) at the Greenwood Wildlife Rehabilitation Center in Longmont, Colorado.
  • A Sahara spiny-tailed lizard (Uromastyx geyri) at Rolling Hills Wildlife Adventure near Salina, Kansas.
  • Rough-scaled sand boa (Eryx conicus) at the Tulsa Zoo.
  • An eastern American toad (Bufo americanus americanus) found in Watertown, NY.
  • Picture of federally endangered jaguarundis (Puma yagouaroundi) at Bear Creek Feline Center.
  • An endangered Mexican alligator lizard (Abronia graminea) at the St. Louis Zoo.
  • Photo: A fishfly larva (Chauliodes pectinicornis) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected near Davis, West Virginia
  • Photo: Long-snouted pipefish (Doryichthys boaja) at Faunia in Madrid, Spain.
  • Narrow-headed garter snake (Thamnophis rufipunctatus) at the Phoenix Zoo.
  • Picture of an ivory-billed aracari (Pteroglossus azara flavirostris) at the Dallas World Aquarium.
  • Picture of silkworm (Bombyx mori) coccoons.
  • Photo: An Indian star tortoise (Geochelone elegans) at the Taronga Zoo.
  • Photo: A tiger longwing (Heliconius ismenius) at the Butterfly Pavilion.
  • Pronghorn antelope (Antilocapra americana americana) at the Great Plains Zoo.
  • Photo: A golden riffleshell (Epioblasma aureola) photographed at the Aquatic Wildlife Conservation Center.
  • Photo: An Appalachian brook crayfish (Cambarus bartonii) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Picture of a red-cheeked cordon-bleu finch (Uraeginthus bengalus brunneigularis) from a private collection.
  • A southern tamandua (Tamandua tetradactyla nigra) at the Denver Zoo, Denver, Colorado.
  • Picture of a grizzly bear (Ursus arctos horribilis) at the Sedgwick County Zoo.
  • Photo: A mane crayfish, Procambarus lophotus, at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Photo: A female kelp goose (Chloephaga hybrida hybrida) at Lundi Farm in Verl, Germany.
  • Photo: An Ozark hellbender (Cryptobranchus alleganiensis bishopi) at the St. Louis Zoo. This facility is famous for rearing hellbenders, but also for studying cures for chytrid (bd) fungus and other threats.
  • Photo: Atlantic sting ray (Dasyatis sabina) from Gulf Specimen Marine Laboratories.
  • Mustard white butterfly (Pieris oleracea) from a mix of prairie and woodlands near Cross Lake, Minnesota.
  • Photo: Aknot, a five-year-old Gunnison’s prairie dog (Cynomys gunnisoni) photographed in Utah.
  • Picture of three vulnerable Cape vultures (Gyps coprotheres). This is the heaviest of the African vultures, with males reaching 16 lbs, and the females reaching 20 lbs. The male is darker and smallest, named Kruger, The largest is Motswari, she's the lightest; the third is Timbavati.
  • Picture of an endangered (IUCN) and federally endangered, 21-year-old, lion-tailed macaque (Macaca silenus) named Babu at the Cincinnati Zoo.
  • A vulnerable (IUCN) and federally endangered Ochre-marked parakeet (Pyrrhura cruentata) at the Houston Zoo.
  • Indian blue peafowl (Pavo cristatus) at the Lincoln Children's Zoo.
  • Photo: An Atlantic salmon (Salmo salar) at the Maine State Aquarium in West Boothbay, ME. This species is listed as vulnerable by IUCN.
  • Photo: A juvenile Galapagos tortoise (Chelonoidis niger) at Parque de las Leyendas in Lima, Peru.
  • Photo: An acuminate crayfish, Cambarus acuminatus, at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Arizona treefrog (Hyla wrightorum) at the Arizona-Sonora Desert Museum.
  • Photo: A green-cheeked parakeet (Pyrrhura molinae restricta) from the private collection of Gery Dupas.
  • Picture of a blue-naped mousebird (Urocolius macrourus) at the Dallas Zoo. The bird's name is Crackle.
  • Photo: Razor-billed curassow (MItu tuberosum) at Melbourne Zoo.
  • Photo: A pair of variable platyfish (Xiphophorus variatus) from a private collection in Knoxville, Tennessee.
  • Critically endangered (IUCN) and federally endangered Cumberlandian combshell (Epioblasma brevidens) taken from the Clinch River near Sneedville. These mussels and many others are in danger of extinction due to habitat loss due such as impoundments and pollution. Pollution from coal mining in the Clinch River watershed is of special concern. The fine sedimentation that comes downstream from the mines is thought to impede mussel survival.
  • Southern leopard frog ( Lithobates sphenocephalus ) at the Denver zoo.
  • Photo: A plains pocket gopher (Geomys bursarius major) at the WildCare Foundation.
  • Photo: Gelada baboons (Theropithecus gelada) at Parco Natura Viva in Bussolengo, Italy.
  • Picture of federally endangered jaguarundis (Puma yagouaroundi) at Bear Creek Feline Center.
  • An eastern yellow-billed hornbill (Tockus flavirostris flavirostris) at the Indianapolis Zoo.
  • Photo: A cork bark leaf-tailed gecko (Uroplatus pietschmanni) from a private collection.
  • Photo: Striped bass (Morone saxatilis) at Welaka National Fish Hatchery Aquarium.
  • A picture of a Rio Grande cooter (Pseudemys gorzugi) from the Turtle Survival Center.
  • Picture of a Northern olingo (Bassaricyon gabbii pauli) at the Summit Municipal Park in Gamboa, Panama.
  • A Kenya crested guineafowl (Guttera pucherani pucherani) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A juvenile large-headed capuchin monkey (Sapajus macrocephalus) from the Coari area of Amazona, Brazil.
  • Photo: A lace coral (Pocillopora damicornis) at the Akron Zoo.
  • Photo: Left handed whelk (Busycon contrarium) eggs from Gulf Specimen Marine Laboratories.
  • Two Madagascar button quails (Turnix nigricollis) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Picture of a yellow-faced turtle (Emydura tanybaraga) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Picture of a Lord Derby's parakeet (Psittacula derbiana) at the Wellington Zoo.
  • Picture of an albino house mouse (Mus musculus) named salt at the Point Defiance Zoo.
  • Picture of a federally endangered Asiatic golden cat (Catopuma temminckii) at the Assam State Zoo cum Botanical Garden.
  • New River morph of a dyeing poison frog (Dendrobates tinctorius) from a private collection.
  • Photo: A female Taiwan ring necked pheasant (Phasianus colchicus formosanus) at the Plzen Zoo.
  • Picture of a pink zebra beauty tarantula (Eupalaestrus campestratus) at the St. Louis Zoo.
  • A vulnerable red uakari monkey (Cacajao calvus ucayalii) at the LA Zoo.
  • Photo: Gecko (Gekko vittatus) at Wroclaw Zoo.
  • A red-winged blackbird (Agelaius phoeniceus) perches on a Nikon D2X camera at Waveland Farm near Bennett, NE.
  • Photo: A burrowing owl (Athene cunicularia) at the Denver Zoo.
  • A brown tree snake (Boiga irregularis).
  • A giant leaf-toed gecko (Hemidactylus giganteus) from a private collection.
  • Photo: A paper kite (Idea leuconoe leuconoe) at Davao Butterfly House.
  • Photo: Short-nosed algae eating shrimp (Caridina longirostris) from a private collection.
  • A vulnerable (IUCN) Komodo dragon (Varanus komodoensis) at the Houston Zoo.
  • Portrait of a male northern bobwhite quail (Colinus virginianus).
  • Photo: An ornate hawk eagle (Spizaetus ornatus vicarious) at SIA, the Comanche Nation Ethno-Ornithological Initiative.
  • A starred agama (Laudakia stellio brachydactyla) at the Indianapolis Zoo.
  • Photo: A Durangan rock rattlesnake (Crotalus lepidus maculosus) at the Houston Zoo, Houston, Texas.
  • Picture of a federally endangered, American alligator (Alligator mississippiensis) at the Kansas City Zoo.
  • An American crow (Corvus brachyrhynchos) at the Sutton Avian Research Center, Bartlesville, Oklahoma.
  • Photo: A female downy woodpecker (Dryobates pubescens medianus) near Hudson, Wisconsin, USA.
  • A Texas toad (Anaxyrus speciosus) at the San Antonio Zoo.
  • Picture of a red-sided garter snake (Thamnophis sirtalis parietalis) at Reptile Gardens.
  • A gulf menhaden (Brevoortia patronus) Gulf Specimen Marine Lab.
  • Photo: An European wildcat (Felis silvestris silvestris) at Parco Natura Viva in Bussolengo, Italy.
  • Photo: A sheepnose mussel (Plethobasus cyphyus) from the Clinch River in Tennessee.
  • Photo: An Appalachian monkeyface mussel (Theliderma sparsa) from the Powell River, Tennessee photographed at the Aquatic Wildlife Conservation Center in Marion, Virginia.
  • Picture of a critically endangered (IUCN) and federally endangered Eastern black rhino (Diceros bicornis michaeli) at the Oklahoma City Zoo.
  • Picture of an endangered rough-snouted giant gecko (Rhacodactylus trachyrhynchus) at the Palm Beach Zoo.
  • A great grey owl (Strix nebulosa nebulosa) at the New York State Zoo.
  • Photo: A spongodes coral (Montipora spongodes) at the Akron Zoo.
  • 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
  • Four-striped grass mouse (Rhabdomys pumilio) at the Omaha Zoo.
  • Photo: A pair of long-tailed paradise-whydah (Vidua paradisaea) at the Memphis Zoo in Tennessee.
  • Photo: A juvenile armored katydid (Enyaliopsis petersii) at Gorongosa National Park, Mozambique.
  • Photo: An Eleonora cockatoo (Cacatua galerita eleonora) at the Kansas City Zoo.
  • Photo: A fledgling European barn owl (Tyto alba guttata) from the Plzen Zoo in the Czech Republic.
  • Photo: Stick insect (Ramulus nematodes blue) at the Moscow Zoo.
  • Florida green water snake (Nerodia floridana) at the Archbold Biological Station.
  • A picture of a desert cottontail rabbit (Sylvilagus audubonii baileyi) at the Omaha Henry Doorly Zoo and Aquarium.
  • Photo: A male African lion (Panthera leo) at Omaha's Henry Doorly Zoo and Aquarium.
  • Picture of vulnerable mossy New Caledonian geckos (Rhacodactylus chahoua) at Pet Paradise.
  • Photo: A hybrid Dusky lorikeet x yellow-streaked lorikeet at the Dallas Zoo. The bird's name is Pig Pen.
  • Photo: A female common loon (Gavia immer) at the Wildlife Rehabilitation Center of Minnesota.
  • Photo: A male tricolor shiner (Cyprinella trichroistia) from Hatchet Creek, Coosa River Drainage near Goodwater, Alabama.
  • A picture of a coconut crab (Birgus latro) from Halmahera, Mollucas Island, Indonesia.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Picture of Spotted jellyfish (Mastigias papua) at the Monterey Bay Aquarium.
  • A northern mole cricket (Neocurtilla hexadactyla) at Spring Creek Prairie near Denton, Nebraska.
  • A scissor grinder cicada (Neotibicen pruinosus) in Lincoln, NE.
  • Photo: An ample elimia (Elimia ampla) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL.
  • Picture of a brown spotted pit viper (Protobothrops mucrosquamatus) at the Dallas Zoo.
  • Photo: A male Mrs. Hume's pheasant (Syrmaticus humiae burmanicus) at Lundi Farm in Verl, Germany.
  • Photo: A Gulf Coast spiny softshell turtle (Apalone spinifera aspera) at the Sedgwick County Zoo in Wichita, Kansas.
  • Picture of Auckland green geckos (Naultinus elegans), yellow and green color phases, at the Wellington Zoo.
  • A Choctawhatchee beach mouse (Peromyscus polionotus allophrys) a federally endangered rodent, at the USFWS office in Panama City, FL. This and several other beach mice subspecies are imperiled due to beach development.
  • Picture of a Brazilian greysmoke tarantula (Grammostola alticeps) at the Central Florida Zoo.
  • Photo: A male snubnose darter (Etheostoma simoterum) collected on the Little River near Maryville Tennessee.
  • Photo: A male sailfin molly (Poecilia latipinna) at the Dallas Children's Aquarium.
  • Photo: Unicorn katydid (Copiphora rhinoceros) at the Audubon Insectarium.
  • A picture of an alligator pipefish (Syngnathoides biaculeatus) at Semirara Marine Hatchery Laboratory in the Philippines.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Photo: Western lesser siren (Siren intermedia nettingi) at the Conservation Department of the San Antonio Zoo.
  • Picture of a sponge crab (Dromidia antillensis) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A sand perch (Diplectrum bivittatum) at Gulf Specimen Marine Lab.
  • Twin spot rattlesnake (Crotalus pricei) at the Fresno Chaffe Zoo.
  • Photo: Yellow-bellied sheathtail Bat (Saccolaimus flaviventris) at the Australian Bat Clinic.
  • Photo: A monacled cobra (Naga kauthia) at Reptile Gardens.
  • Photo: Tonks, a 16 day old baby aye-aye (Daubentonia madagascariensis) at the Denver Zoo. This species is listed as endangered by both the IUCN and the Federal List.
  • A mountain pygmy possum (Burramys parvus) a critically-endangered mammal from Victoria, Australia.
  • Green toad (Anaxyrus debilis) at the Arizona-Sonora Desert Museum.
  • Picture of a Colombian color morph of a diablito frog (Oophaga sylvatica) at the Cali Zoo in Colombia.
  • Miss Sandy Hill, a federally endangered Mississippi sandhill crane (Grus canadensis pulla), at the Audubon Center for Research of Endangered Species. Only 110 of this sandhill crane subspecies exists in the wild. Only another 45 birds are in captivity.
  • Picture of a Himalayan griffon vulture (Gyps himalayensis) at the Assam State Zoo cum Botanical Garden in Guwahati, Assam, India.
  • Photo: A Wyberba leaf-tailed gecko (Saltuarius wyberba) with a broken tail from a private collection.
  • A pimpleback mussel (Quadrula pustulosa) at the Genoa National Fish Hatchery. This is one of 44 species of freshwater mussels still found in the upper Mississippi River near Prairie du Chien, WI.
  • A critically endangered (IUCN) and federally endangered oyster mussel (Epioblasma capsaeformis). These mussels and many others are in danger of extinction because of habitat loss due to such as impoundments and pollution. Pollution from coal mining in the Clinch River watershed is of special concern. The fine sedimentation that comes downstream from the mines is thought to impede mussel survival.
  • Photo: Black-throated canary (Crithagra atrogularis), also known as the yellow-rumped seedeater in Choussy, France.
  • Photo: An Asian house shrew (Suncus murinus) at the Plzen Zoo.
  • Photo: Collared tree lizard (Plica plica) at the London Zoo.
  • Photo: Natterer's gecko (Tropiocolotes nattereri) from a private collection.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Photo: Ural owl (Strix uralensis macroura) at Monticello Center in Italy.
  • Photo: Kikuyu black and white colobus (Colobus guereza kikuyuensis) at the Lisbon Zoo
  • A juvenile violet turaco (Musophaga violacea) at the Lincoln Children's Zoo.
  • Studio portrait of a red knot (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.
  • A vulnerable (IUCN) Komodo dragon (Varanus komodoensis) at the Houston Zoo.
  • Puerto Rican crested toad (Peltophryne lemur) at the Sedgwick County Zoo in Wichita, Kansas. (IUCN: Critically Endangered, and federally threatened)
  • Photo: A Roque treefrog (Hyloscirctus phyllognathus) from Limon, Ecuador.
  • Picture of a spider tortoise (Pyxis arachnoides brygooi) at the St. Louis Zoo.
  • An endangered false gavial (Tomistoma schlegelii) at the San Antonio Zoo.
  • A ruin lizard (Podarcis sicula) at the Sedgwick County Zoo in Wichita, Kansas.
  • Young grackles, Quiscalus quiscula, at the home of wildlife rescuer in Lincoln, Nebraska.
  • Photo: Moapa White River springfish (Crenichthys baileyi moapae) at Warm Springs Natural Area, Upper Muddy River, NE Clark County, Nevada.
  • Photo: A male Reeve’s pheasant (Syrmaticus reevesii) at Redmon Aviaries.
  • Photo: A green toad (Bufo viridis or Pseudepidalea virdis) at the Audubon Aquarium in New Orleans.
  • Photo: The Onychomys tapeworm (Hymenolepis robertrauschi) at Cedar Point Biological Station.
  • Photo: A Seipp's day gecko (Phelsuma seippi) at the Plzen Zoo.
  • Photo: A southwestern red-tailed hawk, Buteo jamaicensis fuertesi, at Wild At Heart in AZ.
  • Photo: An Uluguru forest tree frog (Leptopelis uluguruensis) at Prague Zoo. This species is endemic to the Uluguru mountains in Tanzania.
  • Photo: A female variable sunbird (Cinnyris venustus falkensteini) from Mt. Gorongosa in Gorongosa National Park.
  • Texas cave salamanders (Eurycea neotenes) at the Detroit Zoo, Detroit, Michigan. (IUCN: Vulnerable)
  • Photo: A Himalayan striped squirrel (Tamiops macclellandi) at Tierpark Berlin.
  • A blue jay (Cyanocitta cristata) at the School of Biological Sciences at the University of Nebraska-Lincoln.
  • Picture of a sugar glider (Petaurus breviceps).
  • Picture of a Eurasian lynx (Lynx lynx) at the Columbus Zoo.
  • Photo: Harper's beauty, Harperocallis flava, a federally listed plant from Florida.
  • Photo: A redspotted sunfish (Lepomis miniatus) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • A hooded tick spider (Cryptocellus narino) at the University of Porto in Portugal.
  • Larval central newts (Notophthalmus viridescens) from Missouri State University.
  • Photo: Purple honeycreeper (Cyanerpes caeruleus) and red-legged honeycreeper (Cyanerpes cyaneus) at the Dallas World Aquarium.
  • Photo: Waukesha, a black minorca chicken.
  • Photo: White-fronted Amazon (Amazona albifrons nana) in Choussy, France.
  • A critically endangered (IUCN) and federally endangered hawksbill turtle (Eretmochelys imbricata) at the XCaret Resort in Mexico.
  • Photo: Common wall lizard (Podarcis muralis) at Wroclaw Zoo.
  • A Barbary dove (Streptopelia risoria) at the Riverside Zoo, Scottsbluff, Nebraska.
  • A scissor grinder cicada (Neotibicen pruinosus) in Lincoln, NE.
  • Photo: Crested mona monkey (Cercopithecus pogonias nigripes) named Amber at Park Assango, run by ONG Animal's World in Libreville, Gabon.
  • Photo: A Yunnan bamboo pitviper (Trimeresurus yunnanensis) from a private collection.
  • Marbled newt (Triturus marmoratus) shot at Conservation Fisheries, a breeding center for rare native stream fish.
  • 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.
  • A barn swallow (Hirundo rustica rustica) at the Plzen Zoo.
  • Photo: A longsnout pipefish (Syngnathus acus) at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Photo: A male Jones’s silver pheasant (Lophura nycthemera jonesi) at a private collection.
  • Picture of a Sumatran spitting cobra (Naja sumatrana) at the Dallas Zoo.
  • Photo: Chocolate gourami (Sphaerichthys osphromenoides) at Zoo Negara.
  • Picture of an Arctic fox, Vulpes lagopus, at the Great Bend Brit Spaugh Zoo in Great Bend, Kansas.
  • Photo: A Russian rat snake (Elaphe schrenckii) at Pet Paradise.
  • Photo: Purple swamphen (Porphyrio porphyrio porphyrio) at Wroclaw Zoo.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • Photo: A Mauritius ornate day gecko (Phelsuma ornata) at Josh’s Frogs in Michigan.
  • Photo: An endangered Kulan (Equus hemionus kulan) at Plzen Zoo in the Czech Republic.
  • A green salamander (Aneides aeneus) at the Toledo Zoo, Toledo, Ohio. (IUCN: Near Threatened)
  • Photo: A Weber's lorikeet or leaf lorikeet (Trichoglossus weberi) at the Houston Zoo.
  • Picture of a caterpillar of a fall webworm moth (Hyphantria cunea) found in the Big Bend Wildlife Management Area near Perry, Florida.
  • Picture of a mated pair of six-banded armadillos (Euphractus sexcinctus) named Dilla (bigger) and Marty at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A juvenile big-eared opossum (Didelphis aurita) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • An eastern screech owl (Megascopes asio asio) at The Wildlife Center in Espanola, NM.
  • Photo: Carunculated caracara (Phalcoboenus carunculatus) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: A tomato frog (Dyscophus guinetti) at the Vancouver Aquarium.
  • Photo: A Komodo dragon, Varanus komodoensis, at Sedgwick County Zoo. This animal is less than three months old and was a parthenogenetic birth.
  • Photo: A mountain creekshell (Villosa vanuxemensis) collected on the Little River near Maryville Tennessee.
  • Photo: A male Nashville warbler (Leiothlypis ruficapilla ruficapilla) from a bird banding study near Hudson, Wisconsin.
  • Photo: A female bronze-tailed peacock-pheasant (Polyplectron chalcurum chalcurum) at a private collection.
  • Photo: A marsupial frog (Gastrotheca sp.) at Balsa de los Sapos.
  • A marginated tortoise (Testudo marginata) at the Gladys Porter Zoo.
  • Photo: A critically endangered Lake Oku clawed frog (Xenopus longipes) at the London Zoo.
  • Photo: Two Goliath beetles (Goliathus goliatus) at the Bugarium, a part of the ABQ BioPark.
  • Photo: A female Poseidon birdwing (Ornithoptera priamus poseidon) at Butterfly World.
  • Picture of a vulnerable (IUCN) and federally endangered cheetah (Acinonyx jubatus jubatus) at the Columbus Zoo.
  • Wagler’s temple viper (Trimeresurus wagleri) at the Fort Worth Zoo.
  • Photo: Solomons corella (Cacatua ducorpsii) at Park Assango, ONG Animal's World in Libreville, Gabon.
  • Photo: Mysore ornamental tarantula (Poecilotheria striata) at Butterfly Pavilion in Westminster, Colorado.
  • Photo: An emperor flat rock lizard (Platysaurus guttatus rhodesianus) at the Safari Land Pet Store.
  • Photo: A strawberry poison frog (Oophaga pumilio) at Josh’s Frogs in Owosso, Michigan.
  • Photo: Sika, a Northern lynx (Lynx lynx lynx) at the Lisbon Zoo.
  • Photo: An endangered white-bellied spider monkey (Ateles belzebuth) at Quistococha Zoo in Iquitos, Peru.
  • Photo: Critically Endangered Bandula barb (Pethia bandula) at the Plzen Zoo. This is the Photo Ark's 9,000th species!
  • Photo: A juvenile rock goby (Gobius paganellus) from the Lisbon area at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Photo: A dark spot isopod (Porcellio ornatus) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A carpenter ant (Camponotus spinolae) at Buin Zoo.
  • Photo: Nubian goat at the Lincoln Children's Zoo.
  • A male house finch (Carpodacus mexicanus) at the Brown Ranch, Texas.
  • Photo: A yellow-headed Amazon parrot (Amazona oratrix oratrix) at the Kansas City Zoo.
  • Photo: Japanese trap door snail (Bellamya chinensis) from a private collection.
  • A picture of a habu viper (Protobothrops flavoviridis flavoviridis) at the San Antonio Zoo.
  • Photo: An endangered chimpanzee named Jengo (Pan troglodytes) at the Singapore Zoo.
  • Photo: A Goliath beetle (Goliathus goliatus) at the Bugarium, a part of the ABQ BioPark.
  • A picture of an Oaxaca mud turtle (Kinosternon oaxacae) from the Turtle Survival Center.
  • Photo: A belted sandfish (Serranus subligarius) at Gulf Specimen Marine Lab.
  • Photo: A neotropical tiger beetle (Pseudoxychelia quechua) at Museo De Historia Natural "Alcide d'Orbigny".
  • Photo: A fringed darter (Etheostoma crossopterum) at the Tennessee Aquarium.
  • Photo: A wood bison (Bison bison athabascae) at Tierpark Berlin.
  • Photo: A female O'Shaughnessy's chameleon (Calumma oshaughnessyi) from a private collection in St. Augustine, Florida.
  • Photo: Red tailed amazon, Amazona brasiliensis, at Loro Parque Fundacion.
  • A vulnerable Buckley's giant glass frog (Centrolene buckleyi) at Pontificia Universidad Católica del Ecuador.
  • Plains leopard frog (Lithobates blairi) at Fenton Farm.
  • A federally endangered Hawaiian hawk (Buteo solitarius) at the Houston Zoo.
  • Photo: A question mark butterfly (Polygonia interrogationis) at the Minnesota Zoo.
  • Photo: Shoshone pupfish (Cyprinodon nevadensis shoshone) collected in Shoshone, California.
  • Photo: A large tree nymph butterfly (Idea leuconoe) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • Photo: A quadrangular milky frog (Trachycephalus quadrangulum) at Centro Jambatu in Quito, Ecuador.
  • Photo: Sonoran opossum (Didelphis virginiana californicus) from a private collection.
  • Picture of a common squirrel monkey, Saimiri sciureus, at the Lincoln Children's Zoo.
  • Picture of a female silver-beaked tanager (Ramphocelus carbo) at the Tulsa Zoo.
  • Photo: A rio morph of the tricolor poison dart frog (Epipedobates tricolor) at Centro Jamatu in Quito, Ecuador.
  • A picture of an Upemba mud turtle (Pelusios upembae) from the Turtle Survival Center.
  • Picture of a male and female canvasback duck (Aythya valisineria) at Sylvan Heights Bird Park.
  • Photo: A male Kirghiz pheasant (Phasianus colchicus mongolicus) at the Plzen Zoo.
  • Photo: Iberian hare (Lepus granatensis granatensis) at the University of Porto in Portugal
  • Picture of a greater slow loris (Nycticebus coucang) at the Minnesota Zoo. This is a vulnerable species that's in decline due to deforestation and the pet trade.
  • Photo: A northern waterthrush (Parkesia noveboracensis) near Hudson, Wisconsin, USA.
  • A picture of a black-tailed prairie dog (Cynomys ludovicianus ludovicianus) at Zoo Atlanta.
  • Photo: Orchard butterfly (Papilio aegeus) at Melbourne Zoo. This is a male.
  • Photo: A male Japanese white-eye (Zosterops japonicus) from a private collection in St. Augustine, Florida.
  • Photo: A male yellow-casqued hornbill (Ceratogymna elata) at the Memphis Zoo in Tennessee.
  • Picture of a male and a female rainbow stag beetle, Phalacrognathus muelleri, at the Houston Zoo.
  • Giant owl butterfly (Caligo memnon memnon) in Gamboa, Panama.
  • Photo: A juvenile pine warbler (Setophaga pinus pinus) at St. Francis Wildlife
  • Picture of a spotted python (Antaresia maculosa) from a private collection.
  • Citico darter (Etheostoma sitikuense) a vulnerable (IUCN) species at Conservation Fisheries, a native stream fish breeding center.
  • Photo: A Verreaux’s eagle (Aquila verreauxii) at Sia, the Comanche Nation Ethno-Ornithological Initiative.
  • Photo: A colocolo or pampas cat (Leopardus colocolo garleppi) at Parque de las Leyendas in Lima, Peru.
  • Photo: A kelp gull (Larus dominicanus dominicanus) at BioParque do Rio.
  • Photo: Oriental fire-bellied toad (Bombina orientalis) at the Denver Zoo.
  • Photo: An unidentified symphyllia brain coral (Symphyllia sp.) at the Akron Zoo.
  • Picture of a Dominican slider (Trachemys stejnegeri vicina) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A wedge-tailed eagle (Aquila audax audax) named Duncan at the World Bird Sanctuary.
  • Photo: Pale milk snake (Lampropeltis triangulum multistriata) collected in the Nebraska Sandhills--Thomas County.
  • Photo: A kinkajou (Potos flavus chapadensis) at the Pilpintuwasi Butterfly Farm and Amazon Animal Orphanage.
  • A Mississippi mud turtle (Kinosternon subrubrum hippocrepis) at Millard's Turtle Farm, Birmingham, Iowa.
  • A caterpillar, probably of a noctuid moth, from the Mount Gorongosa Range during the Bioblitz in Gorongosa National Park.
  • Photo: A monarch butterfly caterpillar (Danaeus plexippus) found at Spring Creek Prairie.
  • Photo: Gray redhorse (Moxostoma congestum) at the Albuquerque BioPark's Aquatic Conservation Facility (ACF).
  • Picture of a federally endangered Andean condor (Vultur gryphus) at the Lowry Park Zoo.
  • A giant glass frog (Centrolene grandisonae) near Mindo, Ecuador.
  • Picture of a least sandpiper (Calidris minutilla) at the Monterey Bay Aquarium.
  • Photo: An endangered gray gibbon (Hylobates muelleri muelleri) at the Miller Park Zoo.
  • Photo: A blue-crowned racket-tail parrot (Prioniturus discurus discurus) at the Avilon Zoo.
  • An American lady butterfly (Vanessa virginiensis) from a prairie woodland near Cross Lake, Minnesota.
  • Photo: A duncan coral (Duncanopsammia axifuga) at the Akron Zoo.
  • A Platte River caddisfly (Ironoquia plattensis) in its larval stage.
  • Photo: A Philippine scops owl (Otus megalotis) at the Plzen Zoo in the Czech Republic.
  • A white grunt (Haemulon plumierii) at Gulf Specimen Marine Lab.
  • Photo: A common egg cockle (Laevicardium laevigatum) at Gulf Specimen Marine Lab.
  • Photo: Savanna monitor lizard (Varanus exanthematicus) at the Denver Zoo.
  • Photo: A male Mindanao tarictic hornbill (Penelopides affinis affinis) in Choussy, France.
  • Photo: A juvenile ebony grasshopper (Boopedon nubilum) at Cedar Point Biological Station.
  • Photo: Shiner surfperch (Cymatogaster aggregata) at East Bay Regional Park District.
  • Mallard (Anas platyrhynchos) ducklings.
  • Photo: A Rufous-cheeked laughingthrush (Garrulax castanotis castanotis) at the Prague Zoo.
  • Photo: Purple bellied lory (Lorius hypoinochrous devittatus) at Loro Parque Fundacion.
  • An Australian walking stick (Extatosoma tiaratum) at the National Aquarium, Baltimore.
  • Photo: Pacific parrotlet (Forpus coelestis) from Le Parc des Oiseaux in Villars Les Dombes, France.
  • Photo: Northwestern garter snake (Thamnophis ordinoides) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Photo: An Asian glossy starling (Aplonis panayensis) at Plzen Zoo.
  • Photo: A Botta’s pocket gopher (Thomomys bottae pervagus) at the Wildlife Center of New Mexico.
  • Picture of a white lipped tree frog, Litoria infrafrenata, at the Wild Life Sydney Zoo.
  • A picture of a gold-ring danio (Danio tinwini) at Plzen Zoo in the Czech Republic.
  • Picture of a bat cave cockroach (Eublaberus distanti) at the Cincinnati Zoo.
  • Texas horned toad (Phrynosoma cornutum) at the Fort Worth Zoo.
  • Photo: A booted eagle (Hieraaetus pennatus) at Sia, the Comanche Nation Ethno-Ornithological Initiative.
  • Photo: Yellow-bellied poison frog (Andinobates fulguritus) at the Cali Zoo in Colombia.
  • Photo: Federally listed endangered freshwater mussels taken from the Clinch River near Sneedville.
  • Photo: Rock anemone (Exaiptasia diaphana) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A tiger longwing (Heliconius ismenius) at the Butterfly Pavilion.
  • Photo: Lined chiton (Tonicella lineata) at the Trinity Western University.
  • Photo: A female, vulnerable red-crowned parakeet (Cyanoramphus novaezelandiae) named 'Gidget'.
  • Picture of a diamond watchman goby (Valenciennea puellaris) at Pure Aquariums.
  • Picture of a vulnerable (IUCN) and federally endangered St. Vincent parrot (Amazona guildingii) at the Houston Zoo.
  • Photo: A Madagascar hissing cockroach (Princisia vanwaerebecki) in dark form from the Plzen Zoo in the Czech Republic.
  • Picture of a black-headed caique (Pionites melanocephalus) at the National Aviary of Colombia.
  • A South American cockroache (Blaberus giganteus) at the Bramble Park Zoo.
  • Photo: Colombian chachalaca (Ortalis columbiana) at Piscilago Zoo in Bogota, Colombia.
  • Photo: Herman's tortoise (Testudo hermanni) at Safari Land Pet Center.
  • A four-toed salamander (Hemidactylium scutatum) at the Toledo Zoo, Toledo, Ohio.
  • Endangered tasmanian devils (Sarcophilus harrisii) at the Australia Zoo.
  • Endangered (IUCN) and federally endangered aye-ayes (Daubentonia madagascariensis) at the Omaha Zoo.
  • Picture of a red-breasted blackbird (Sturnella militaris) at the National Aviary of Colombia.
  • Photo: Pink eared duck (Malacorhynchus membranaceus) at Monticello Center in Italy.
  • Photo: Brawleys Fork crayfish, Cambarus williami, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Brawleys Fork, TN.
  • Picture of a red velvet ant (Dasymutilla occidentalis) at the Tulsa Zoo.
  • Staff members at the Loggerhead Marinelife Center care for ‘Meghan’ an olive ridley sea turtle (Lepidochelys olivacea). This animal came in after becoming entangled in fishing gear. Once rehabbed, the animal will be released in waters off the coast.
  • Photo: A black redhorse (Moxostoma duquesnei) at the Oklahoma Aquarium.
  • Red-winged parrot (Aprosmictus erythropterus) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
  • Photo: A juvenile, female, Harris's hawk (Parabuteo unicinctus unicinctus) at Zoologico de Quito.
  • A boat-tailed grackle (Quiscalus major) egg from a collection at the University of Nebraska State Museum.
  • Photo: A Greenbrier crayfish, Cambarus smilax, wild caught near West Liberty, West Virginia.
  • Photo: A female Greater European scaup (Aythya marila marila) at WWT Slimbridge in England.
  • Photo: A blue ram cichlid (Mikrogeophagus ramirezi) at the Fish Biodiversity Lab at Auburn University.
  • Photo: Mountain caracara (Phalcoboenus megalopterus) at the Rome Zoo.
  • Photo: A juvenile spotted gar (Lepisosteus oculatus) photographed in the Sciences and Technology Building at Nicholls State University in Thibodaux, Louisiana.
  • Photo: Two purple sea urchins (Arbacia punctulata) at Pure Aquariums in Lincoln, Nebraska.
  • A picture of a yellow ratsnake (Pantherophis obsoleta quadrivittata) at the Omaha Zoo
  • Photo: A giant golden mantis (Hierodula venosa) at the Bugarium, part of the ABQ BioPark.
  • Photo: A Sunda scops owl (Otus lempiji cnephaeus) at Jurong Bird Park.
  • Photo: A Cape batis (Batis capensis erythropthalma) from the Mt. Gorongosa range in Mozambique, Africa.
  • Photo: A female South Caucasus pheasant (Phasianus colchicus colchicus) at the Plzen Zoo.
  • Endangered Congo grey parrots (Psittacus erithacus) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
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