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 37,531-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 11,494 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
  • Picture of a dunlin (Calidris alpina) at the Monterey Bay Aquarium.
  • Photo: Hornyhead chub (Nocomis biguttatus) at the Minnesota Dept. of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: Alaska Skate (Bathyraja parmifera) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A snowball plecostomus (Hypancistrus inspector) at the Dallas World Aquarium.
  • Photo: Great jerboa (Allactaga major) at the Moscow Zoo.
  • Picture of an endangered rowi kiwi or okarito kiwi (Apteryx rowi) at the West Coast Wildlife Centre in Franz Josef Glacier, New Zealand.
  • A buffalo darter (Etheostoma bison) at Conservation Fisheries, a native stream fish breeding center in Knoxville. This fish is common in its restricted range of the Upper and Buffalo Rivers in TN.
  • Photo: 'Nyango', the only confirmed Cross River gorilla (Gorilla gorilla diehli) in captivity in the world.
  • An Australian osprey (Pandion haliaetus cristatus) at Healesville Sanctuary.
  • Photo: Imperial flower loach (Leptobotia elongata) at the Singapore Zoo.
  • Picture of an ivory-billed aracari (Pteroglossus azara flavirostris) at the Dallas World Aquarium.
  • Photo: Crested francolin (Dendroperdix sephaena grantii) at Safari Park Dvur Kralove.
  • Photo: A CoggerÕs velvet gecko (Oedura coggeri) from a private collection.
  • A Bachman’s sparrow (Peucaea aestivalis aestivalis) at the Greenwood Plantation near Thomasville, Georgia.Peucaea aestivalis
  • Picture of a blue-tailed fire-bellied newt (Cynops cyanurus) at the St. Louis Zoo.
  • Picture of Laos warty newts (Paramesotriton laoensis) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Picture of a lesser snow goose (Chen caerulescens caerulescens).
  • Citico darter (Etheostoma sitikuense) a vulnerable (IUCN) species at Conservation Fisheries, a native stream fish breeding center.
  • Photo: A federally endangered key tree cactus (Pilosocereus robinii), a species found only in Key Largo.
  • Picture of a Northern olingo (Bassaricyon gabbii) at the PanAmerican Conservation Association in Gamboa, Panama.
  • Picture of monarch butterflies (Danaus plexippus) from Sierra Chincua, Mexico.
  • Photo: A grey-headed kite (Leptodon cayanensis monachus) at BioParque do Rio.
  • A broad-banded watersnake (Nerodia fasciata confluens) at the Houston Zoo.
  • Photo: Rainbow shiners (Notropis chrosomus) in spawning colors, from a private collection in Knoxville, Tennessee.
  • Picture of a ribbon snake (Thamnophis sauritus) at the New York State Zoo in Watertown, NY.
  • A male jungle nymph walking stick (Heteropteryx dilatata) at Omaha's Henry Doorly Zoo.
  • A pair of eastern black-and-white colobus monkeys(Colobus guereza) at the Columbus Zoo.
  • Photo: A Eurasian blue tit (Cyanistes caeruleus) from the wild in the Czech Republic.
  • A brown tree snake (Boiga irregularis).
  • A pair of critically endangered (IUCN) and federally endangered Bali mynah (Leucopsar rothschildi) at the Cheyenne Mountain Zoo, Colorado Springs, Colorado.
  • Photo: White-spotted longhorn beetle (Batocera hector) at the Insectarium in New Orleans.
  • Photo: A male Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
  • Picture of a female African twig mantis (Popa spurca) at the St. Louis Zoo.
  • Picture of a Baltimore oriole (Icterus galbula) at the Columbus Zoo.
  • Picture of a red bamboo snake (Oreocryptophis porphyraceus laticincta) from a private collection.
  • Picture of a federally endangered jaguar, Panthera onca, at the Omaha Henry Doorly Zoo
  • A Suriname toad, Pipa pipa.
  • Photo: Oscar-winning director Louie Psihoyos at the premier of Racing Extinction in New York.
  • An endangered (IUCN) and federally endangered Przewalski's wild horse (Equus ferus przewalskii) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A Moroccan eyed lizard (Timon tangitanus) at the Plzen Zoo in the Czech Republic.
  • Photo: Chaco owl (Strix chacoensis) at Monticello Center in Italy.
  • Picture of an Oscar fish (Astronotus ocellatus) at the U.S. Geological Survey Southeast Science Center.
  • Picture of an American great egret (Ardea alba egretta) at the Saint Louis Zoo.
  • Ouachita madtoms (Noturus lachneri) at Conservation Fisheries, a native stream fish breeding center in Knoxville. This is a rare stream fish that has a limited range in Arkansas and is listed as endangered on the IUCN Red List, but it still isn’t listed under the ESA.
  • A beautiful pit viper (Trimeresurus venustus) at the Woodland Park Zoo.
  • Photo: Tam Dao stick insects (Andropromachus scutatus) at the Moscow Zoo.
  • Photo: Livingston's cichlid (Nimbochromis livingstonii) at the Moscow Zoo.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Photo: Smooth green snake (Liochlorophis vernalis) collected in Virginia.
  • Photo: A pair of see-see partridges (Ammoperdix griseogularis) from a private collection.
  • Picture of a black scoter or American scoter (Melanitta americana) at Patuxent Wildlife Research Center.
  • An endangered Riobamba marsupial frog (Gastrotheca riobambae) at Pontificia Universidad Catolica.
  • Photo: A blunt face shiner (Cyprinella camura) at the Oklahoma City Zoo.
  • Photo: Brown caiman (Caiman crocodilus fuscus) at Lisbon Zoo.
  • Picture of a red-crested bustard (Lophotis ruficrista) at the Saint Louis Zoo.
  • Picture of a Gulf Coast water dog (Necturus beyeri) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Picture of an endangered (IUCN) and federally endangered, 21-year-old, lion-tailed macaque (Macaca silenus) named Babu at the Cincinnati Zoo.
  • A bull trout (Salvelinus confluentus) from Bighorn Creek, part of the Kootenay River system. (IUCN: Vulnerable; US: Federally threatened)
  • Photo: Yellow rosella (Platycercus elegans flaveolus) at Loro Parque Fundacion.
  • Photo: A vulnerable European wisent (Bison bonasus) at the Madrid Zoo.
  • Picture of a European goldfinch (Carduelis carduelis) at SPCA Bird Wing, a bird rehab center in Auckland, New Zealand.
  • Photo: A walleye (Sander vitreum) at the Genoa National Fish Hatchery.
  • Eastern indigo snake, Drymarchon corais couperi, at the Toledo Zoo. This species is federally threatened.
  • Picture of an endangered Asian elephant (Elephas maximus) with handler.
  • A studio portrait of a Western ground snake, Sonora semiannulata.
  • Photo: Northern Pacific seastar (Asterias amurensis) at the Moscow Zoo.
  • Picture of a green-cheeked conure (Pyrrhura molinae sordida) at a private collection.
  • Photo: A golden-crowned kinglet (Regulus satrapa satrapa) at the Wildlife Rehab Center of Minnesota (WRCMN).
  • Photo: Common Indian monitor lizard (Varanus bengalensis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A female Jackson's chameleon or Jackson's three-horned chameleon (Trioceros jacksonii) at the Miller Park Zoo in Bloomington, IL.
  • Spiny-headed treefrog (Anotheca spinosa) from central America at Zoo Atlanta.
  • Photo: A male and female walking stick (Mithrenes panayensis) from the Plzen Zoo in the Czech Republic.
  • Spot (Leiostomus xanthurus) at the Virginia Aquarium.
  • Photo: A porcupine puffer, Diodon hystrix, at Shark Reef Aquarium.
  • Picture of a vulnerable long-tailed duck or oldsquaw (Clangula hyemalis) in summer plumage at Patuxent Wildlife Research Center.
  • Picture of a bronze-winged parrot (Pionus chalcopterus) at the Dallas World Aquarium.
  • Photo: A Peter's keeled plated lizard (Tracheloptychus petersi) named Miles, from a private collection.
  • A Malaysian frilled tree frog (Rhacophorus appendiculatus) from a private collection.
  • Picture of an endangered Matschie's tree kangaroo (Dendrolagus matschiei) at the Lincoln Children's Zoo.
  • Photo: Southwestern speckled rattlesnake (Crotalus mitchellii pyrrhus) at the LA Zoo.
  • Photo: Cave cricket (Phaeophilacri bredoides) at the Budapest Zoo.
  • A portrait of a great horned owl (Bubo virginianus subarcticus).
  • Photo: A sooty tern (Onychoprion fuscatus) at the Marathon Wild Bird Center in Marathon, Florida.
  • An African jewel beetle (Pachnoda flaviventris) at the St. Louis Zoo.
  • Photo: Himalayan pit viper (Ancistrodon himalayanus) at Padmaja Naidu Himalayan Zoological Park.
  • Photo: A Palawan binturong (Arctictis binturong whitei) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • A portrait of a two-toed amphiuma (Amphiuma means).
  • Photo: A juvenile song sparrow (Melospiza melodia euphonia) at Rum River Central Park.
  • Photo: An African chaffinch (Fringilla coelebs africana) at Zoo Plzeň.
  • A Malaysian frilled tree frog (Rhacophorus appendiculatus) from a private collection.
  • Photo: Teays River crayfish (Cambarus sciotensis) from the wild.
  • An endangered Forsten's (travancore) tortoise (Indotestudo forstenii) at Zoo Atlanta. This terrestrial species is from Indonesia's Sulawesi Island.
  • Photo: Two-month old yellow-faced turtles (Emydura tanybaraga) at the Oklahoma City Zoo.
  • Picture of a Black and gold bumblebee (Bombus auricomus).
  • A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.
  • Picture of a great blue turaco (Corythaeola cristata) at the Sedgwick County Zoo.
  • An endangered (IUCN) and federally endangered Higgins eye pearly mussel (Lampsilis higginsii) at the Genoa National Fish Hatchery, Genoa, Wisconsin.
  • Photo: A rasbora (Trigonostigma hengeli) at Plzen Zoo in the Czech Republic.
  • Photo: A Rio Santiago poison-dart frog (Dendrobates captivus) at Centro Jambatu in Quito, Ecuador.
  • Photo: Long-snouted pipefish (Doryichthys boaja) at Faunia in Madrid, Spain.
  • Photo: Rainbow shark (Labeo frenatus) at the Moscow Zoo.
  • Rough-scaled sand boa (Eryx conicus) at the Tulsa Zoo.
  • A group of Augochlorine green sweat bees (Augochlorirni) photographed at a studio in Lincoln, NE.
  • A chestnut-fronted macaw or severe macaw (Ara severus) at the Fort Worth Zoo.
  • Two Egyptian geese (Alopochen aegyptiacus) at the Cleveland Metroparks Zoo.
  • A rufescent tiger-heron (Tigrisoma lineatum marmoratum) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: Banded fire salamander (Salamandra salamandra gallaica) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A Colorado foam-nest frog (Engystomops coloradorum) at Centro Jambatu in Quito, Ecuador.
  • Photo: A Brazilian three-banded armadillo (Tolypeutes tricinctus) at the Denver Zoo, Denver, Colorado.
  • Photo: A Barbary partridge (Alectoris barbara) at the Plzen Zoo.
  • Photo: Harlequin Tusk (Choerodon fasciatus) at Pure Aquariums.
  • Photo: Asian Woolly-necked Stork (Ciconia episcopus episcopus) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Picture of a chestnut-bellied sandgrouse (Pterocles exustus) at the Saint Louis Zoo.
  • Picture of a white-throated quail dove (Geotrygon frenata) at the National Aviary of Colombia.
  • Picture of an American white ibis (Eudocimus albus) at the Caldwell Zoo in Tyler, Texas.
  • Northern cricket frog (Acris crepitans) caught in the wild in Arma, Kansas.
  • Photo: A Mexican jumping bean moth, Cydia deshaisiana, on the seed of the desert shrub, Sebastiania pavoniana, at the University of Florida at Gainesville.
  • Picture of a female Cape barren goose, Cereopsis novaehollandiae, at Sylvan Heights Bird Park.
  • Osage copperhead (Agkistrodon contortrix phaeogaster) at the Tulsa Zoo.
  • Picture of a whimbrel (Numenius phaeopus) at the National Aviary of Colombia
  • A grotto salamander (Eurycea spelaea) from the Tulsa Zoo.
  • Photo: A male L’Hoest’s monkey (Allochrocebus lhoesti) at Parco Natura Viva, Bussolengo, Veneto, Italy.
  • Photo: A Peregrine falcon (Falco peregrinus brookei) at the Wildlife Rescue Center of Rome (LIPU).
  • Photo: A Pinon's imperial pigeon (Ducula pinon) at the Jurong Bird Park.
  • A double-crested cormorant (Phalacrocorax auritus) at the Cincinnati Zoo.
  • Oblong-winged katydid (Amblycorypha oblongifolia) at the Omaha Henry Doorly Zoo. This one is pink, an unusual color morph. The pink katydids range throughout most of the United States; particularly the midwest and north east. The most common color phase is green. These animals rely primarily on camouflage to defend against predators. Occasionally, pink and even orange katydids are found. This is caused by genes, not diet, age, or sex. Recent evidence has shown that the pink color phase is actually dominant over green when bred in the lab. However, in the wild, the pink katydids are more readily picked off by predators before reaching maturity. The individuals do not appear to be aware of their color and do not change their life patterns accordingly.
  • Picture of a Burton's legless lizard (Lialis burtonis) at the Healesville Sanctuary.
  • Photo: European toad (Bufo bufo) at the Plzen Zoo in the Czech Republic.
  • Picture of a pair of crested partridges (Rollulus rouloul) at the Indianapolis Zoo.
  • Photo: A northern pearl dace (Margariscus nachtriebi) at the Schramm Education Center near Gretna, NE.
  • Picture of a brown spotted pit viper (Protobothrops mucrosquamatus) at the Dallas Zoo.
  • A southern three-banded armadillo (Tolypeutes matacus) at the Lincoln Children's Zoo, Lincoln, Nebraska. (IUCN: Near Threatened)
  • Picture of a vulnerable Malayan flat shelled turtle (Notochelys platynota) at the Knoxville Zoo.
  • Picture of a lesser snow goose (Chen caerulescens caerulescens).
  • Photo: A large fig parrot (Psittaculirostris desmarestii desmarestii) at the Prague Zoo.
  • A horned frog (Ceratophrys cornuta) at the Riverbanks Zoo.
  • Photo: A guina (Leopardus guigna tigrillo) whose name is Pikumche from Fauna Andina in central-south, Chile.
  • Photo: Coralline sculpin (Artedius corallinus) at East Bay Regional Park District.
  • Photo: An eggshell urn crab (Pitho laevigata) Gulf Specimen in Panacea, Florida.
  • Photo: Polka dot Batfish (Ogcocephalus cubifrons) at the Dallas Children's Aquarium.
  • Picture of an endangered Cauca guan (Penelope perspicax) at the Cali Zoo in Colombia.
  • Photo: Ocean pout (Zoarces americanus) at Ripley's Aquarium of Canada.
  • A barred tiger salamander (Ambystoma mavortium mavortium) at the Sunset Zoo.
  • Photo: Slender sea robin (Prionotus scitulus) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Josephine's lorikeet (Charmosyna josefinae) photographed at Loro Parque Fundacion.
  • Photo: Stumpff's Madagascar ground gecko, Paroedura stumpffi, at the Plzen Zoo.
  • A vulnerable black and rufous elephant shrew (Rhynchocyon petersi) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • A pill-bug (Armadillidium vulgare) at the Fort Worth Zoo.
  • Picture of a common death adder (Acanthophis antarcticus) at the Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: Two-month old yellow-faced turtles (Emydura tanybaraga) at the Oklahoma City Zoo.
  • Photo: A black pine snake (Pituophis lodingi)
  • A Fea's viper (Azemiops feae) at the St. Louis Zoo.
  • A piping plover (Charadrius melodus). (US: Endangered)
  • Photo: Dione ratsnake (Elaphe dione) at the Plzen Zoo.
  • Sara, the endangered (IUCN) and federally endangered whooping crane (Grus americana), at the Audubon Center for Research of Endangered Species. This is an educational bird.
  • A black-throated magpie-jay (Calocitta colliei) from the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a blue-capped cordon-bleu (Uraeginthus cyanocephalus) at Sylvan Heights Waterfowl Park.
  • Photo: Grayling (Thymallus thymallus) at the Loveland Living Planet Aquarium.
  • Picture of a red-crested bustard (Lophotis ruficrista) at the Saint Louis Zoo.
  • Photo: Walking stick (Acanthomenexenus polyacanthus) at the Budapest Zoo.
  • Photo: A male yellowfin chalceus (Chalceus erythrurus) at the Dallas World Aquarium.
  • A Japanese giant salamander (Andrias japonicus) at the San Antonio Zoo, San Antonio, Texas. (IUCN: Near Threatened)
  • Picture of a great blue heron (Ardea herodias herodias) being cared for by Nebraska Wildlife Rehab.
  • Photo: An unidentified cicada at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: An endangered red-fronted macaw (Ara rubrogenys) at the Miller Park Zoo.
  • Photo: Atlantic canary (Serinus canaria) in Santa Cruz, Tenerife, Spain.
  • Picture of a rosy-billed pochard ducks (Netta peposaca,) at the Sylvan Heights Bird Park.
  • A crested myna (Acridotheres cristatellus) at the Plzen Zoo in the Czech Republic.
  • Photo: Goliath pink-toe tarantula (Avicularia braunshauseni) at the Woodland Park Zoo.
  • An endangered (IUCN) and federally endangered mountain yellow-legged frog (Rana muscosa). Population locality: San Bernardino.
  • Picture of a dusky footed woodrat (Neotoma fuscipes) at the Wildlife Center of Silicon Valley.
  • Picture of endangered (IUCN) and federally endangered Francois langurs (Trachypithecus francoisi) at the Omaha Zoo.
  • Laughing kookaburra (Dacelo novaeguineae) at the Cleveland Metroparks Zoo.
  • Photo: A female Colombian lesser black tarantula (Xenesthis immanis) at the Budapest Zoo.
  • Picture of a tui (Prosthemadera novaeseelandiae) at SPCA Bird Wing, a bird rehab center in Auckland, New Zealand.
  • Guinean bichir (Polypterus ansorgii) at the Moscow Zoo.
  • Photo: An upland burrowing crayfish (Cambarus dubius) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Photo: Virginia creeper sphinx (Darapsa myron) cocoon with parasitic wasp hatchlings on it at the McGuire Center in Gainesville, Florida.
  • Photo: A ruddy ground dove (Columbina talpacoti) at the Plzen Zoo in the Czech Republic.
  • Photo: A luzon marbled water monitor (Varanus marmoratus) at the Avilon Zoo.
  • Picture of a white-backed duck, Thalassornis leuconotus, at Sylvan Heights Bird Park.
  • Picture of a 29-year-old endangered male Asian elephant (Elephas maximus) named Billy at the LA Zoo.
  • Photo: An unidentified caterpillar from the wild in Cameroon.
  • Photo: A tank goby (Glossogobius giuris) at the University of the Philippines.
  • Photo: Bluefin killifish (Lucania goodei) from a private collection in Knoxville, Tennessee.
  • Photo: White-headed munia (Lonchura maja) in Choussy, France.
  • Picture of a Blue-capped cordon-bleu (Uraeginthus cyanocephalus) at Sylvan Heights Waterfowl Park.
  • Photo: A male ruby-crowned kinglet (Regulus calendula calendula) at the Akron Zoo.
  • An owl butterfly (Caligo memnon) at the Insectarium in New Orleans, Louisiana.
  • Picture of a vulnerable mossy New Caledonian gecko (Rhacodactylus chahoua) at Pet Paradise.
  • Photo: An endangered gray woolly monkey (Lagothrix cana) at Mantenedor da Fauna Silvestre Cariuá.
  • Photo: Tarantula (Catumiri chicaoi) at the Toronto Zoo.
  • Gray comma (Polygonia progne) from a mix of prairie and woodlands near Cross Lake, Minnesota.
  • Photo: A Blyth's hawk-eagle (Nisaetus alboniger) at Jurong Bird Park, of Wildlife Reserves Singapore.
  • An endangered Coquerel's sifaka (Propithecus coquereli) at the Houston Zoo.
  • A greenhouse frog (Eleutherodactylus planirostris) at the Tulsa Zoo.
  • Photo: A Wurdemanni shrimp (Lysmata wurdemanni) at Aquarium Berlin.
  • A barred tiger salamander (Ambystoma mavortium mavortium) at the Sedgwick County Zoo.
  • Picture of a male American wigeon (Mareca americana) at Sylvan Heights Bird Park.
  • A jungle nymph walking stick (Heteropteryx dilatata) at Omaha's Henry Doorly Zoo.
  • Photo: A scorpion mud turtle (Kinosternon scorpiodes) at the Chapultepec Zoo in Mexico City.
  • Photo: Chapman's zebra (Equus quagga chapmani) at Wroclaw Zoo.
  • Photo: Field cricket (Gryllus assimilis) at Wroclaw Zoo.
  • Picture of a greater fruit-eating bat (Artibeus lituratus) at the Lubee Bat Conservancy in Gainesville, Florida.
  • Photo: A slender mongoose (Galerella sanguinea) at the Plzen Zoo.
  • Photo: A male red-handed howler monkey (Alouatta belzebul) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a Key West quail-dove (Geotrygon chrysia) from a private collection in the Dominican Republic.
  • White-throated monitor (Varanus albigularis albigularis) at the Omaha Zoo.
  • Scarlet macaws (Ara macao) at the Henry Doorly Zoo in Omaha, Nebraska.
  • Photo: Puff-faced water snake (Homalopsis buccata) at the Singapore Zoo.
  • Picture of an endangered red panda (Ailurus fulgens fulgens) at the Lincoln Children's Zoo.
  • Photo: Flat rock crab (Percnon planissimum) at the Loveland Living Planet Aquarium in Draper, UT.
  • Photo: Marajo amazon, Amazona ochrocephala xantholaema, at Loro Parque Fundacion.
  • Picture of a Carolina diamondback terrapin (Malaclemys terrapin centrata) at the Tulsa Zoo.
  • Photo: Pacific lamprey (Entosphenus tridentatus) at the MK Nature Center in Boise, Idaho.
  • Photo: A group of federally endangered rayed kidneyshells (Ptychobranchus foremanianus) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Photo: An Eastern redbelly turtle (Pseudemys rubriventris) at the Estuarium in Dauphin Island, AL.
  • Photo: Inca stone fish (Tahuantinsuyoa macantzatza) at L'aquarium tropical du palais de la Porte DorŽe.
  • An African brush-tailed porcupine (Atherurus africanus) at the Omaha Zoo.
  • A gopher tortoise (Gopherus polyphemus) at Zoo Atlanta, Atlanta, Georgia. (IUCN: Vulnerable, US: Threatened)
  • Picture of a sulphur-crested cockatoo (Cacatua galerita).
  • Photo: A southern flying squirrel (Glaucomys volans) at Omaha's Henry Doorly Zoo.
  • Picture of a vulnerable lined seahorse (Hippocampus erectus) at Omaha's Henry Doorly Zoo and Aquarium.
  • A male eastern tiger swallowtail butterfly (Papilio glaucus) from Lincoln, NE.
  • Photo: Atlantic Sturgeon (Acipenser oxyrinchus oxyrinchus) at the Welaka National Fish Hatchery Aquarium.
  • Picture of a female Cape barren goose, Cereopsis novaehollandiae, at Sylvan Heights Bird Park.
  • Photo: A green leaf bird (Chloropsis sonnerati sonnerati) at Bali Safari.
  • Photo: A timber rattlesnake (Crotalus horridus horridus) at Reptile Gardens.
  • A green bush rat snake (Gonyosoma prasinum) at the Dallas Zoo.
  • Photo: A male guiña (Leopardus guigna guigna) from Fauna Andina in central-south, Chile.
  • A grey carpetshark (Chiloscyllium punctatum) at the Oklahoma City Zoo.
  • Photo: A Kilimanjaro mustard baboon spider (Pterinochilus chordatus) at Prague Zoo.
  • Photo: Common two-banded sea bream, Diplodus vulgaris, saltwater fish at the Vasco da Gama Aquarium.
  • Picture of a grizzly bear (Ursus arctos horribilis) at the Sedgwick County Zoo.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Picture of a black-capped parakeet (Pyrrhura rupicola) at Pet Paradise.
  • Picture of an Orchard oriole (Icterus spurius) at the Columbus Zoo.
  • A two-headed yellow-belied slider (Trachemys scripta scripta) at Riverbanks Zoo.
  • Yellow-necked francolin (Pternistis leucoscepus) at Safari Park Dvur Kralove.
  • Photo: Leucos aula at Alpenzoo in Innsbruck, Austria.
  • Golden birdwing (Troides helena) at the McGuire Center at the Florida Museum of Natural History.
  • Eastern Senegal parrot (Poicephalus senegalus mesotypus) in the Kids ZooU section of the Philadelphia Zoo.
  • An American green anole or Carolina anole (Anolis carolinensis) at the Audubon Zoo in New Orleans, Louisiana.
  • Photo: A female tailless whipscorpion (Phrynus pseudoparvulus) from the University of Nebraska-Lincoln.
  • Photo: From the United Nations premier of Racing Extinction, featuring Photo Ark images.
  • Photo: A palm cockatoo (Probosciger aterrimus) at the Sedgwick County Zoo.
  • A tailess tenrec (Tenrec ecaudatus) in Madagascar.
  • Picture of a Gulf Coast waterdog (Necturus beyeri) at the Central Florida Zoo.
  • A musk ox (Ovibos moschatus moschatus) at the University of Alaska in Fairbanks, AK.
  • A Geoffroy's tufted-ear marmoset (Callithrix geoffroyi) at the Cleveland Metroparks Zoo.
  • Photo: Raddei vole (Lasiopodomys raddei) at the A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Science.
  • Photo: A antennata lionfish (Pterois antennata) at the Dallas Children's Aquarium.
  • Picture of a little spotted kiwi or little gray kiwi (Apteryx owenii owenii) at the Wellington Zoo.
  • Photo: A vulnerable Elk River crayfish, Cambarus elkensis, wild caught near West Liberty, West Virginia.
  • Photo: An Alabama map turtle (Graptemys pulchra) at the Cheyenne Mountain Zoo.
  • Photo: An endangered White-winged Duck (Asarcornis scutulata) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: A female Böhme's two-horned chameleon (Kinyongia boehmei) from a private collection in St. Augustine, Florida.
  • Picture of a tui (Prosthemadera novaeseelandiae) at SPCA Bird Wing, a bird rehab center in Auckland, New Zealand.
  • Photo: An endangered red-fronted macaw (Ara rubrogenys) at the Miller Park Zoo.
  • A desert cottontail rabbit (Sylvilagus audubonii) at the Omaha Henry Doorly Zoo and Aquarium.
  • Photo: Slaty headed parakeet, Psittacula himalayana, at Loro Parque Fundacion.
  • Photo: A variegated meadowhawk dragonfly nymph (Sympetrum corruptum) at the Butterfly Pavilion.
  • Picture of a young robin, Turdus migratorius, from the home of wildlife rescuer in Lincoln, Nebraska.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Picture of a common tree snake (Dendrelaphis punctulatus) at the Healesville Sanctuary.
  • Photo: A bronze darter (Percina palmaris) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Walnut Creek, part of the Coosa Basin, AL.
  • Picture of a Nicaraguan slider (Trachemys emolli) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: Red winged parrot (Aprosmictus erythropterus coccineopterus) at Loro Parque Fundacion.
  • Photo: Rainbow shiners (Notropis chrosomus) in spawning colors, from a private collection in Knoxville, Tennessee.
  • Picture of a common squirrel monkey (Saimiri sciureus sciureus) named Chili at the Santa Fe College Teaching Zoo.
  • Photo: An American wolffish (Anarhichas lupus) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: Mediterranean spotted chafer (Oxythyrea funesta) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A Nepalese whiskered bat (Myotis muricola) at the University of the Philippines.
  • Picture of a federally endangered, American alligator (Alligator mississippiensis) at the Kansas City Zoo.
  • Photo: Ground gecko (Dixonius sp. nov) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: Rock anemone (Aiptasia pallida) at Gulf Specimen Marine Lab and Aquarium.
  • Picture of Javan munia (Lonchura leucogastroides) from a private collection.
  • Photo: A Mekong snail-eating Turtle (Malayemys subtrijuga) at Angkor Centre for Conservation of Biodiversity (ACCB) in Cambodia.
  • Photo: An Australian saurus crane (Grus antigone gillae) from a private collection in Choussy, France.
  • Picture of a subantarctic fur seal (Arctocephalus tropicalis) at the Auckland Zoo.
  • Photo: A Northern Pacific rattlesnake (Crotalus oreganus oreganus) at the American International Rattlesnake Museum in Albuquerque, NM.
  • An endangered Forsten's (travancore) tortoise (Indotestudo forstenii) at Zoo Atlanta. This terrestrial species is from Indonesia's Sulawesi Island.
  • Canary island lizard (Gallotia galloti eisentrauti) at Wroclaw Zoo.
  • A vulnerable (IUCN) Tarahumara leopard frog (Lithobates tarahumarae) at the Arizona-Sonora Desert Museum.
  • Photo: A grizzled tree-kangaroo (Dendrolagus inustus) at a private collection in Jakarta, Indonesia.
  • A white-breasted nuthatch (Sitta carolinensis).
  • Picture of a long-spined sea urchin (Diadema setosum) at the John Ball Zoo in Grand Rapids, Michigan.
  • Leopard-bellied scrub toad (Ollotis signifera) a species native to Panama, at Zoo Atlanta.
  • Picture of a crested bobwhite (Colinus cristatus) at the Dallas World Aquarium.
  • A muscovy duck named Joelle (Cairina moschata moschata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a white-faced ibis (Plegadis chihi) named Gonzo at The Living Desert in Palm Desert, California.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • Photo: A Salado salamander (Eurycea chisholmensis) at the Conservation Department of the San Antonio Zoo. This species is listed as vulnerable on the IUCN Red List.
  • Sara, the endangered (IUCN) and federally endangered whooping crane (Grus americana), at the Audubon Center for Research of Endangered Species. This is an educational bird.
  • Philippine palm viper (Trimeresurus mcgregori) at the Detroit Zoo.
  • Photo: A Robert Mertens' day gecko (Phelsuma robertmertensi) at the Plzen Zoo.
  • A mallard (Anas platyrhynchos) duckling.
  • Guatemalan beaded lizard (Heloderma horridum charlesbogerti) at Zoo Atlanta. This is believed to be the rarest lizard in the world, with a possible wild population of six animals and fewer than 20 in captivity.
  • Photo: A diadem leaf-nosed bat (Hipposideros diadema) at the University of the Philippines.
  • A lilac breasted roller, Coracias caudatus, at the Omaha Henry Doorly Zoo.
  • A longtail salamander (Eurycea longicauda longicauda) at the Toledo Zoo, Toledo, Ohio.
  • A female golden-backed weaver (Ploceus jacksoni) at Safari Park Dvur Kralove.
  • Hairy bush viper (Atheris hispida) at Zoo Atlanta.
  • Photo: Black rockfish (Sebastes melanops) at East Bay Regional Park District.
  • Photo: An endangered male southern mountain reedbuck (Redunca fulvorufula fulvorufula) at Tierpark Berlin.
  • Photo: A scorpion mud turtle (Kinosternon scorpiodes) at the Chapultepec Zoo in Mexico City.
  • Picture of a Madagascar turtle dove (Streptopelia picturata) at the Houston Zoo.
  • Picture of Coolio, a vulnerable yellow-shouldered amazon parrot (Amazona barbadensis) at Alabama Gulf Coast Zoo.
  • Photo: Bottlebrush crayfish, Barbicambarus cornutus, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Baron Creek, TN.
  • Photo: Orange flower sponge (Agelas sp.) at Butterfly Pavilion.
  • Photo: An African crested porcupine (Hystrix africaeaustralis) at the Riverside Zoo, Scottsbluff, Nebraska.
  • Photo: Ocellated brain coral (Cyphastrea ocellina) from a private collection in Saint Louis.
  • Photo: Blue flash (Thorichthys aureus) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: A vulnerable Fiordland crested penguin (Eudyptes pachyrhynchus) at the Taronga Zoo in Sydney, Australia.
  • Photo: Palawan stink badger (Mydaus marchei) at Avilon Zoo.
  • Picture of a tropical mockingbird (Mimus gilvus) at the National Aviary of Colombia.
  • A federally endangered Mexican gray wolf (Canis lupus baileyi) at the Wild Canid Survival and Research Center.
  • A vulnerable great curassow (Crax rubra rubra) at the Gladys Porter Zoo in Brownsville, Texas.
  • The cobalt morph of a three-month old tadpole of a dyeing poison frog (Dendrobates tinctorius) from a private collection.
  • Photo: A Lower Keys marsh rabbit, Sylvilagus palustris hefneri, from the wild.
  • Vine snake (Oxybelis aeneus) at the Arizona-Sonora Desert Museum.
  • Photo: Hardhead minnow (Mylopharodon conocephalus) at the University of California, Davis.
  • A marbled newt (Triturus marmoratus) photographed at Conservation Fisheries, a breeding center for rare native stream fish.
  • Picture of a South African large-spotted genet (Genetta tigrina) at the Cincinnati Zoo.
  • Federally endangered Kootenai River white sturgeon (Acipenser transmontanus) at the Kootenai Tribal Hatchery in Idaho.
  • Photo: A little devil poison dart frog (Oophaga sylvatica tomate) at Balsa de los Sapos.
  • A vulnerable salmon-crested cockatoo,(Cacatua moluccensis), at the Sedgwick County Zoo.
  • A white-necked myna (Streptocitta albicollis) at the Houston Zoo.
  • Picture of a red-capped cardinal (Paroaria gularis) at the Tulsa Zoo.
  • Photo: A black tree monitor lizard (Varanus beccari) at the Buffalo Zoo.
  • Picture of an Eastern collared lizard (Crotaphytus collaris collaris) at the Wichita Mountains National Wildlife Refuge near Lawton, OK.
  • Picture of a Garrido's crested anole (Anolis barbatus) from a private collection.
  • Photo: Giant flower beetle (Mecynorhina torquata torquata) at the Houston Zoo
  • Photo: Yellow-tailed cribo (Drymarchon corais corais) at the Cincinnati Zoo.
  • Picture of a black-ray goby (Stonogobiops nematodes) at Pure Aquariums.
  • Photo: Clouded yellow butterfly (Colias croceus) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A marsh meadow grasshopper (Chorthippus curtipennis) at the Niwot Ridge Long Term Ecological Research site, near Nederland, CO. This research site is funded by the National Science Foundation.
  • Photo: A red-necked francolin (Pternistis afer) at Safari Park Dvur Kralove.
  • Photo: A nimble spray crab (Percnon gibbesi) at Riverbanks Zoo and Garden.
  • Photo: A Kuhl's pipistrelle bat (Pipistrellus kuhlii kuhlii) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: BocourtÕs arboreal alligator lizard (Abronia vasconcelosii) at Urban Ark Conservation
  • Photo: Great white or rosy pelican (Pelecanus onocrotalus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Two tropical boubous (Laniarius aethiopicus mossambicus) in Gorongosa in Mozambique, Africa.
  • An American crow (Corvus brachyrhynchos) at the Sutton Avian Research Center, Bartlesville, Oklahoma.
  • Photo: Snakeskin gourami (Trichogaster pectoralis) at Zoo Negara.
  • Photo: A green terror (Andinoacara rivulatus) at the Institute of Marine Mammal Studies (IMMS) at Gulfport, MS. This animal is part of their public education area.
  • Photo: A common noctule bat (Nyctalus noctula noctula) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: Acacia rat (Thallomys paedulcus) at the Moscow Zoo.
  • Photo: A twelve-wired bird-of-paradise (Seleucidis melanoleuca) at Taman Mini Indonesia Indah.
  • A white-breasted nuthatch (Sitta carolinensis).
  • An endangered (IUCN) and federally endangered Virgin Islands boa (Chilabothrus granti) at Toledo Zoo.
  • Picture of a sulphur-crested cockatoo (Cacatua galerita).
  • Photo: Java combtail (Belontia hasselti) at Zoo Negara.
  • Photo: Western girdled lizard, Zonosaurus laticaudatus, at the Plzen Zoo.
  • Manchado, a Mexican spotted owl (Strix occidentalis lucida) at The Wildlife Center in Espanola, New Mexico.
  • A vulnerable (IUCN) and federally endangered Mandrill (Mandrillus sphinx) and her infant at the Gladys Porter Zoo.
  • A yellow-shafted flicker (Colaptes auratus luteus) at Nebraska Wildlife Rehab, Inc.
  • Photo: A juvenile common opossum (Didelphis marsupialis) at Cetas-IBAMA, a wildlife rehab center in Manaus, Brazil.
  • Photo: Blue crowned lorikeet (Vini australis) at Loro Parque Fundacion.
  • A Parson's chameleon (Calumma parsonii) at the Houston Zoo.
  • Photo: Plumbeous kite (Ictinia plumbea) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: A great blue turaco (Corythaeola cristata) at the Houston Zoo.
  • Photo: Eighteen-scaled worm (Halosydna brevisetosa) at the Trinity Western University.
  • Photo: A trumpet manucode (Phonygammus keraudrenii) at the Zoo Berlin.
  • Photo: A Cameroon forest treefrog (Leptopelis brevirostris) from Bioko Island, Equatorial Guinea.
  • A white-faced whistling duck (Dendrocygna viduata) at the Lincoln Children's Zoo.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild) .
  • Photo: Several eggs of the Florida applesnail (Pomacea paludosa) at Gulf Specimen Aquarium in Panacea, FL. This species is in decline due to being out-competed by introduced, invasive snails from other countries.
  • An endangered (IUCN) and federally endangered Higgins eye pearly mussel (Lampsilis higginsii) at the Genoa National Fish Hatchery, Genoa, Wisconsin.
  • Picture of a sacred kingfisher (Todiramphus sanctus) at Healesville Sanctuary.
  • Picture of a vulnerable, baby Gray's monitor (Varanus olivaceus) at the LA Zoo.
  • Photo: A male common waterbuck (Kobus ellipsiprymnus ellipsiprymnus) at the Lisbon Zoo
  • Photo: A European earwig, Forficula auricularia, at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • A golden eagle (Aquila chrysaetos canadensis) named Bubba from Nebraska.
  • Photo: A five-spotted hawk moth (Manduca quinquemaculata) from the wild in Walton, Nebraska.
  • A red-legged brown dart frog or rainforest rocket frog (Silverstoneia flotator) at the National Aquarium in Baltimore.
  • Picture of a brown pelican (Pelecanus occidentalis) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a weedy scorpionfish (Rhinopias frondosa) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A crested guan (Penelope purpurascens aequatorialis) at the Nispero Zoo.
  • Photo: A greater forest wallaby (Dorcopsis hageni) from a private collection.
  • Photo: Wood boa (Tropidophis melanurus) at the Wroclaw Zoo.
  • Photo: Spot-billed Pelican (Pelecanus philippensis) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: Pacific sand sole (Psettichthys melanostictus) at Ripley's Aquarium of Canada.
  • Photo: A Prevost's squirrel (Callosciurus prevostii bangkanus) at the Berlin Zoo.
  • A federally endangered Karner blue butterfly, Lycaeides melissa samuelis, emerges from pupae.
  • Photo: Blue winged parrotlet (Forpus xanthopterygius flavissimus) at Loro Parque Fundacion.
  • Picture of a pygmy hippopotamus (Choeropsis liberiensis) named Betty at the Omaha Zoo. Listed as endangered (IUCN)
  • Photo: An endangered Higgins eye pearly mussel (Lampsilis higginsii) at the Genoa National Fish Hatchery, Genoa, Wisconsin.
  • Picture of a critically endangered blue-eyed black lemur (Eulemur flavifrons) named "Presley" at the Duke Lemur Center.
  • Photo: A black wildebeest or White-tailed gnu (Connochaetes gnou) at the Singapore Zoo.
  • An Antilles pinktoe tarantula (Caribena versicolor) at the Fort Worth Zoo.
  • New Mexico spadefoot toad (Spea multiplicata) at the Arizona-Sonora Desert Museum.
  • A federally threatened spectacled caiman (Caiman crocodilus crocodilus) at Omaha's Henry Doorly Zoo.
  • A striped possum (Dactylopsila trivirgata) at Omaha's Henry Doorly Zoo.
  • A pair of critically endangered lemur leaf frogs (Agalychnis lemur) in amplexus, from the Panama, population, at the Atlanta Botanical Garden. The male is on top.
  • Photo: A male crowned river turtle, Hardella thurjii, at Prague Zoo. This species is listed as vulnerable by IUCN. This turtle is native to the Ganges river system in India.
  • Picture of a Yellow phase of the strawberry poison dart frog (Oophaga (Dendrobates) pumilio) at the National Aquarium in Baltimore.
  • Photo: A three-week-old white-tailed deer fawn at the Gladys Porter Zoo.
  • Photo: Wonga pigeon (Leucosarcia melanoleuca ) at the Houston Zoo.
  • Photo: A blue-naped parrot, Tanygnathus lucionensis salvadorii, at Talarak Foundation.
  • A maize calligrapher hoverfly (Toxomerus politus) from near Adams, NE.
  • A Great Plains toad (Anaxyrus or Bufo cognatus) at the Phoenix Zoo.
  • Picture of a false water cobra or Brazilian smooth snake (Hydrodynastes gigas) at the Woodland Park Zoo.
  • Photo: An American crocodile (Crocodilus acutus) at the Omaha Zoo.
  • Photo: A lowland swamp viper (Atheris superciliaris) at Reptile Gardens.
  • Picture of a common death adder (Acanthophis antarcticus) at the Healesville Sanctuary.
  • Photo: Southern Idaho ground squirrel (Urocitellus brunneus endemicus) at Zoo Boise
  • A white grunt (Haemulon plumierii) at Gulf Specimen Marine Lab.
  • Photo: Pictus catfish (Pimelodus pictus) at the Oklahoma City Zoo.
  • A vulnerable (IUCN) western pond turtle (Actinemys marmorata) at the Oregon Zoo.
  • A redfish (Sciaenops ocellatus).
  • A black duiker (Cephalophus niger) at the Columbus Zoo.
  • Photo: Prairie kingsnake (Lampropeltis calligaster calligaster) collected in Pawnee County, Nebraska.
  • Picture of a yellow-tailed oriole (Icterus mesomelas) at the National Aviary of Colombia
  • A common raccoon (Procyon lotor).
  • An Thailand golden fringe tarantula (Ornithoctonus aureotibialis), collected from Surat Thani location, from a private collection.
  • A Malaysian river toad (Phrynoidis aspera) from a private collection.
  • The abdomen of a banded garden spider (Agriope trifasciata) found at Spring Creek Prairie near Denton, Nebraska.
  • Picture of baby little blue penguins (Eudyptula minor) at the Cincinnati Zoo.
  • Photo: An Atlantic cod (Gadus morhua) at the Maine State Aquarium.
  • A Yucatan road guarder (Conophis lineatus concolor) at the Chapultepec Zoo, Mexico City, Mexico.
  • Harley the federally threatened Queensland koala (Phascolarctos cinereus adustus) recovers from two broken legs at the Australia Zoo Wildlife Hospital in Queensland. He was hit by a car, which is a common occurrence with koalas and fatal for many.
  • A North American beaver (Castor canadensis).
  • Photo: Harvestman spider (Leiobunum) at the Dallas Zoo.
  • Photo: A cascabel (Crotalus terrificus) at Reptile Gardens.
  • Photo: Great yellow mormon (Papilio lowii) at the San Antonio Zoo.
  • Photo: Worrelli turtle (Emydura subglobosa worrelli) at Templestowe College.
  • Photo: Male banded newt (Triturus vittatus ophryticus) at the Moscow Zoo.
  • Photo: An endangered Ecuadorian monkey frog (Callimedusa ecuatoriana) at Centro Jambatu in Quito, Ecuador.
  • Photo: European medicinal leech (Hirudo medicinalis) at the Woodland Park Zoo.
  • Picture of a female eastern towhee (Pipilo erythrophthalmus) at Tall Timbers Research Station and Land Conservancy.
  • Photo: A desert woodrat (Neotoma lepida) at California Science Center in Los Angeles, California.
  • Picture of a mantis shrimp (Squilla empusa) at Gulf Specimen Marine Lab and Aquarium.
  • Picture of an Oriental cockroach (Blatta orientalis) at the Saint Louis Zoo.
  • Picture of a California red-sided garter snake (Thamnophis sirtalis infernalis) at the Cheyenne Mountain Zoo in Colorado Springs, CO.
  • A jungle carpet python (Morelia spilota cheynei) at the Columbus Zoo.
  • An ornate diamondback terrapin (Malaclemys terrapin macrospilota) from the wild in Franklin County, FL.
  • Photo: A rainbow whiptail (Cnemidophorus lemniscatus) at the Houston Zoo.
  • A crested myna (Acridotheres cristatellus) at the Plzen Zoo in the Czech Republic.
  • Puerto Rican crested toad (Peltophryne lemur) at the Sedgwick County Zoo in Wichita, Kansas. (IUCN: Critically Endangered, and federally threatened)
  • A mustached parakeet (Psittacula alexandri fasciata) at the Assam State Zoo cum Botanical Garden.
  • Picture of a Danube crested newt (Triturus dobrogicus) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: Malayan Cave Racer (Orthriophis taeniurus ridleyi) at the Singapore Zoo.
  • Photo: A tantalus monkey (Chlorocebus aethiops tantalus) at Limbe Wildlife Center, a rescue and rehab center for wildlife in Limbe, Cameroon.
  • Photo: A banded pygmy sunfish (Elassoma zonatum) from a private collection in Knoxville, Tennessee.
  • A Japanese giant salamander (Andrias japonicus) at the San Antonio Zoo. (IUCN: Near Threatened)
  • Picture of a flame angelfish (Centropyge loricula) at Pure Aquariums.
  • Photo: Ambiguous crayfish, Cambarus striatus, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Montgomery Bell State Park, TN.
  • Photo: A male brown leaf chameleon, Brookesia superciliaris, from a private collection.
  • A critically endangered (IUCN) and federally endangered Sumatran tiger (Panthera tigris sumatrae).
  • Japanese angelfish (Centropyge interrupta) at the Dallas World Aquarium.
  • 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.
  • Two Egyptian geese (Alopochen aegyptiacus) at the Cleveland Metroparks Zoo.
  • Photo: Giant South American grasshopper (Tropidacris violaceus) at Wroclaw Zoo.
  • Photo: A noctule bat, Nyctalus noctula, at Wildwood Trust near Canterbury, England.
  • A black-tailed prairie dog (Cynomys ludovicianus) at the Denver Zoo.
  • Photo: A desert king snake (Lampropeltis getula splendida) from a private collection.
  • A red phased Eastern screech owl (Megascops asio floridanus) at the Audubon Center for Birds of Prey.
  • Photo: A male wolf spider (Schizocosa maxima) from the University of Nebraska-Lincoln.
  • 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.
  • Manchado, a Mexican spotted owl (Strix occidentalis lucida) at The Wildlife Center in Espanola, New Mexico.
  • Photo: Striped kelpfish (Gibbonsia metzi) at East Bay Regional Park District.
  • An Ozark zigzag salamander (Plethodon angusticlavius) at Missouri State University, Springfield, Missouri.
  • A federally threatened Cuban iguana (Cyclura nubila nubila) at the San Diego Zoo.
  • Photo: A baby northern pig-tailed macaque (Macaca leonina) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: A male purple-throated fruitcrow (Querula purpurata) at the Dallas World Aquarium.
  • Imported red fire ants (Solenopsis invicta) feed on a drop of honey at the Dallas Zoo.
  • Photo: Pacific lamprey (Entosphenus tridentatus) at the MK Nature Center in Boise, Idaho.
  • A venomous Eastern green mamba (Dendroaspis angusticeps) at Reptile Gardens near Rapid City, South Dakota.
  • A half-day-old hatchling leatherback turtle (Dermochelys coriacea) from Bioko Island. (IUCN: Critically Endangered, US: Endangered)
  • Yellow-collared lovebird (Agapornis personatus) at Piscilago Zoo in Bogota, Colombia.
  • Picture of a regal fritillary (Speyeria idalia) at the Minnesota Zoo.
  • Photo: A male scarlet tanager (Piranga olivacea) at the Wildlife Rehab Center of Minnesota.
  • Sicklefin redhorse fish (Moxostoma sp. "sicklefin redhorse") a rare and undescribed species of redhorse found only in the Blue Ridge section of the Little Tennessee River and Hiwassee River. Photographed at Conservation Fisheries, a breeding center for rare native stream fish.
  • Photo: Saban anole (Anolis sabanus) at Wroclaw Zoo.
  • A cattail toothpick grasshopper (Leptysma marginicollis) at Kissimmee Prairie Preserve State Park.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Picture of a batfish (Ogcocephalus cubiformes) at Gulf Specimen Marine Lab and Aquarium.
  • A Cuban knight anole (Anolis equestris) at the Houston Zoo.
  • A giant water beetle (Belostomatidae sp.)
  • Picture of a female swallow tanager (Tersina viridis) at the Houston Zoo.
  • Photo: A Serotine bat, Eptesicus serotinus, at Wildwood Trust near Canterbury, England.
  • Photo: A male belted kingfisher (Megaceryle alcyon) at the Wildlife Rehab Center of Minnesota (WRCMN).
  • Photo: A common linnet (Linaria cannabina) at the Prague Zoo.
  • Photo: Seminole killifish (Fundulus seminolis) at Welaka National Fish Hatchery Aquarium.
  • A Stevenson's klipspringer (Oreotragus stevensoni) at the Cleveland Metroparks Zoo.
  • Northern greater galago (Otolemur garnettii) at the Cleveland Metroparks Zoo.
  • Picture of a male Aleutian cackling goose (Branta hutchinsii leucopareia) at Sylvan Heights Bird Park.
  • Photo: A Pluto's Prevost's squirrel (Callosciurus prevostii pluto) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Picture of a Texas coral snake (Micrurus tener) at the Houston Zoo, Houston, Texas.
  • A federally endangered parma wallaby (Macropus parma) at the Cleveland Metroparks Zoo.
  • Picture of a rosyside dace (Clinostomus funduloides) at the Virginia Aquarium.
  • Photo: Striped velvet gecko (Homopholis fasciata) at Wroclaw Zoo.
  • A federally endangered Key Largo wood rat (Neotoma floridana smalli) at Disney's Animal Kingdom. Fewer than 250 adults are believed left in the wild, in just two parcels of public land on Key Largo. Captive breeding efforts are underway at both Disney's Animal Kingdom and the Lowry Park Zoo in Tampa, thought the captive population still numbers less than 50 animals.
  • A spectacled owl (Pulsatrix perspicillata).
  • South American wood turtle (Rhinoclemmys pulcherrima rogerbarbourii) at the Arizona-Sonora Desert Museum.
  • Photo: Pallas's squirrel (Callosciurus erythraeus) at the Plzen Zoo in the Czech Republic.
  • A cave salamander (Eurycea lucifuga) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Giant palm salamander (Bolitoglossa dofleini) at the Fort Worth Zoo.
  • Photo: A twin barred flying snake (Chrysopelea pelias) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Philippine palm viper (Trimeresurus mcgregori) at the Detroit Zoo.
  • Photo: Pinto abalone (Haliotis kamtschatkana) coming out of shell at Alutiiq Pride Shellfish Hatchery in Seward, AK.
  • Picture of a lake duck (Oxyura vittata) at Sylvan Heights Bird Park.
  • Picture of a common tree snake (Dendrelaphis punctulatus) at the Healesville Sanctuary.
  • Portrait of a California sea lion (Zalophus californianus).
  • Photo: Greensaddle crayfish (Cambarus manningi) collected near Cedar Springs, Alabama by the West Liberty University Crayfish Conservation Lab.
  • Photo: Red winged parrot (Aprosmictus erythropterus coccineopterus) at Loro Parque Fundacion.
  • Photo: A southern hognose snake (Heterodon simus) in red and white color phases, at a private collection.
  • Picture of an Eastern white-bearded wildebeest (Connochaetes taurinus albojubatus) at the Fort Wayne Zoo.
  • An Indochinese gaur (Bos gaurus readei) at Phnom Tamao Wildlife Rescue Center - Wildlife Alliance in Cambodia.
  • An Egyptian predator beetle (Anthia sexmaculata) at Safari Park Dvur Kralove.
  • Picture of a juvenile Mississippi kite (Ictinia mississippiensis) at the WildCare Foundation.
  • A federally endangered timber wolf (Canis lupus) named Kenai at the New York State Zoo.
  • Photo: A granite night lizard (Xantusia henshawi) at a private collection.
  • Photo: Red lory (Eos bornea) at Loro Parque Fundacion.
  • A Western harvest mouse, Reithrodontomys megalotis.
  • A caribou (Rangifer tarandus) at the Large Animal Research Station at the University of Alaska at Fairbanks.
  • Photo: A female greater carpet chameleon (Furcifer major) at Zoopark Zajezd.
  • Carpenter bee (Xylocopa virginica virginica) at the St. Louis Zoo.
  • Photo: Ornate velvet roach (Deropeltis paulinoi) at the Budapest Zoo.
  • Photo: A salt and pepper catfish (Corydoras habrosus) at Jurong Bird Park, of Wildlife Reserves Singapore.
  • Picture of an endangered (IUCN) and federally endangered black-footed ferret (Mustela nigripes) at the Cheyenne Mountain Zoo.
  • Picture of an orangethroat darter (Etheostoma spectabile pulchellum) collected in Cherokee County, Oklahoma, at the Oklahoma City Zoo.
  • Photo: A lowland swamp viper (Atheris superciliaris) at Reptile Gardens.
  • Picture of a West African crocodile (Crocodylus suchus) at the St. Augustine Alligator Farm.
  • Photo: An endangered Balabac (Philippine) mousedeer (Tragulus nigricans) at the Avilon zoo.
  • Picture of an Atlantic sea spider (Pycnogonida sp.) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: A wild caught unidentified huntsman spider from Mt. Makiling forest in Luzon, Philippines.
  • A red throated ant tanager (Habia fuscicauda erythrolaema), hepatic tanager (Piranga flava), blue-grey tanager (Thraupis episcopus) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Photo: Speckled mouse bird (Colius striatus) collected at Chitengo Camp.
  • Picture of a vulnerable adult female white bellied pangolin (Phataginus tricuspis) with her baby, part of Pangolin Conservation, a non-profit organization in Saint Augustine, Florida.
  • Photo: Holly, a silver laced Wyandotte chicken.
  • Photo: A high-casqued chameleon (Chamaeleo hoehneli) at the Houston Zoo.
  • A malachite butterfly (Siproeta stelenes) at the Insectarium in New Orleans, Louisiana.
  • An eyelash viper (Bothriechis schlegelii) at Reptile Gardens.
  • Wied's marmoset (aka Kuhlii's marmoset)(Callithrix kuhlii) at the Lincoln Childrens Zoo.
  • Photo: A whip scorpion (Typopeltis sp.) from Thailand, at the Moscow Zoo
  • Photo: Chocolate chip star (Protoreaster nodosus) at the Moscow Zoo.
  • Picture of near threatened silvery langur (Trachypithecus cristatus) at the Lowry Park Zoo.
  • Photo: Malie, a 12-yr-old endangered Australian sea lion (Neophoca Cinerea) at the Taronga Zoo.
  • Nene geese (Branta sandvicensis) at the Great Plains Zoo, Sioux Falls, South Dakota. (IUCN: Vulnerable; US: Endangered)
  • A narrow-bridged musk turtle (Claudius angustatus) at the Chapultepec Zoo in Mexico City.
  • Photo: Red-spotted assassin bug (Platymeris rhadamanthus) at the Insectarium in New Orleans.
  • Picture of a critically endangered narrow-headed softshell turtle (Chitra chitra) at the St. Louis Zoo.
  • A rough-skinned newt (Taricha granulosa) at the Oregon Zoo.
  • Picture of a feather blenny (Hypsoblennius hentz) at the Virginia Aquarium.
  • Photo: Larvae of a dobsonfly (Corydalus cornutus) at Conservation Fisheries.
  • Photo: Ruby-spotted swallowtail (Papilio anchisiades idaeus) in Gamboa, Panama.
  • Western cottonmouth (Agkistrodon piscivorous leucostoma) at the Tulsa Zoo.
  • A Panama morph of the Pasco poison frog (Ranitomeya lamasi) from a private collection.
  • A critically endangered Axolotl (Ambystoma mexicanum) at the Detroit Zoo, Detroit, Michigan.
  • Photo: Lined chiton (Tonicella lineata) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A juvenile Texas cottontail rabbit (Sylvilagus floridanus alacer) at Houston SPCA’s Wildlife Center of Texas.
  • Photo: The talons of an endangered North Philippine hawk-eagle (Nisaetus philippensis) at the Avilon Zoo.
  • A southern three-banded armadillo (Tolypeutes matacus) at the Lincoln Children's Zoo, Lincoln, Nebraska. (IUCN: Near Threatened)
  • Photo: A mobile logperch (Percina kathae) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Walnut Creek, a tributary of the Cahaba River, AL.
  • Photo: A common bleak (Alburnus alburnus) at Fluviário de Mora in Portugal.
  • Photo: A three-spot demon fish (Satanoperca daemon) at the Dallas World Aquarium.
  • Photo: Guineafowl puffer (Arothron meleagris) at the Dallas Children's Aquarium.
  • Timor python (Python timoriensis) at the Detroit Zoo.
  • Toady rainfrog or rusty robber frog (Strabomantis or Craugastor bufoniformis), from Central America at Zoo Atlanta.
  • Picture of a vulnerable hispaniolan amazon or parrot (Amazona ventralis) at the Knoxville Zoo in Knoxville, Tennessee.
  • A red rim butterfly (Biblis hyperia) at the Audubon Insectarium in New Orleans.
  • The eye of a pied mossy frog (Theloderma corticale) at the Houston Zoo.
  • Photo: Tiger huntsman (Typostola sp.) from the Melbourne Museum
  • Picture of a four-banded sandgrouse (Pterocles quadricinctus) at the Tulsa Zoo.
  • Glasswing or clearwing (Greta oto) at the Henry Doorly Zoo and Aquarium.
  • Picture of Louis, a 2-year-old painted stork (Mycteria leucocephala), at Tracy Aviary.
  • Photo: A Brazilian radiolated swamp turtle (Acanthochelys radiolata) at BioParque do Rio.
  • Picture of a male summer tanager (Piranga rubra) at the Tulsa Zoo.
  • A green morph of the vulnerable granular poison frog, Oophaga granulifera.
  • Photo: Forest giant pouched rat (Cricetomys emini) at the Plzen Zoo in the Czech Republic.
  • Photo: Morelet's crocodile (Crocodylus moreletii) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • Speckled rattlesnake (Crotalus mitchellii) at the Arizona-Sonora Desert Museum.
  • Photo: An Eastern Javan lutung, Trachypithecus auratus, at Taman Safari.
  • Photo: A blotched blue-tongued lizard (Tiliqua nigrolutea) at Healesville Sanctuary.
  • Limon giant glass frog (Sachatamia ilex) at Zoo Atlanta.
  • Photo: Digger crayfish (Fallicambarus fodiens) from the wild.
  • A slimy salamander (Plethodon glutinosus glutinosus) at the Toledo Zoo, Toledo, Ohio.
  • Photo: Vulnerable Dorcas gazelles (Gazella dorcas) at the Madrid Zoo.
  • Picture of a male Guianan cock-of-the-rock (Rupicola rupicola) at the Dallas World Aquarium.
  • Photo: Orangetail shiner fish (Pteronotropis merlini) from a private collection in Knoxville, Tennessee.
  • Photo: Particoloured flying squirrel (Hylopetes alboniger) at the Moscow Zoo.
  • Picture of a fulvous whistling duck (Dendrocygna bicolor) at Sylvan Heights Bird Park.
  • Pallas's cat (Otocolobus manul) at the Columbus Zoo.
  • Photo: A variable squirrel (Callosciurus finlaysonii cinnamomeus) at Phnom Tamao Wildlife Rescue Center - Wildlife Alliance.
  • Photo: Pacific island boa (Candoia paulsoni) at Eltoro Zoo de la Castellana, Inc., on Negros Island, Philippines.
  • Photo: A female yellow-bellied sapsucker (Sphyrapicus varius) at St. Francis Wildlife, a rehab center in Quincy, FL.
  • Photo: Baja mountain kingsnake (Lampropeltis zonata agalma) at the Arizona-Sonora Desert Museum.
  • Picture of a Burmese vine snake (Ahaetulla fronticincta) at the Woodland Park Zoo.
  • Photo: Western reef-egret (Egretta gularis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Golden pheasants (Chrysolophus pictus) at the Bramble Park Zoo.
  • Photo: A spot-billed duck (Anas poecilorhyncha haringtoni) at Phnom Tamao Wildlife Rescue Center - Wildlife Alliance.
  • Picture of a tuatara (Sphenodon punctatus) at the St. Louis Zoo.
  • A blue-gray gnatcatcher (Polioptila caerulea) at Fort Hood, Texas.
  • A common buckeye butterfly (Junonia coenia) a native to Nebraska, at the Lincoln Children’s Zoo.
  • Bess beetles, also known as patent leather beetles (Odontotaenius disjunctus) at the University of Nebraska's entomology lab.
  • Photo: A giant burrowing cockroach (Macropanesthia rhinoceros) at the Taronga Zoo.
  • Picture of an amphioxus (Branchiostoma floridae), a species said to be the closest link between invertebrates and vertebrates, at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: Belize yellow headed amazon (Amazona oratrix beliziensis) at Loro Parque Fundacion.
  • Picture of Clark's anemonefish (Amphiprion clarkii) at Pure Aquariums.
  • Photo: Common poorwill (Phalaenoptilus nuttallii) at Rogers Wildlife Rehabilitation Center.
  • Picture of a blue-necked tanager (Tangara cyanicollis) at Pandemonium Aviaries in Los Altos Hills, California.
  • Photo: An Uluguru forest tree frog (Leptopelis uluguruensis) at Prague Zoo. This species is endemic to the Uluguru mountains in Tanzania.
  • Picture of a mountain paca (Cuniculus taczanowskii) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: Crested sculpin, Blepsias bilobus, at the Alaska SeaLife Center.
  • A bush thick-knee (Burhinus grallarius) at the Sedgwick County Zoo in Wichita.
  • Sonoran mountain kingsnake (Lampropeltis pyromelana) at the Arizona-Sonora Desert Museum.
  • Photo: Budwing mantis (Parasphendale affinis) at the Budapest Zoo.
  • Picture of a Red-clawed scorpion (Pandinus cavimanus) at the Saint Louis Zoo.
  • Photo: A male yellow-breasted tit (Cyanistes flavipectus) from a private collection in St. Augustine, Florida.
  • A boa constrictor at the Sunset Zoo.
  • A vulnerable (IUCN) western pond turtle (Actinemys marmorata) at the Oregon Zoo.
  • Photo: A male blue grosbeak (Passerina caerulea) at the Zoo Berlin.
  • Photo: An Egyptian fruit bat (Rousettus aegyptiacus) at the Omaha Henry Doorly Zoo.
  • Photo: Saffron cod (Eleginus gracilis) at the Alaska SeaLife Center.
  • Photo: A male spectral pygmy chameleon (Rhampholeon spectrum) from a private collection.
  • Photo: A redspot chub (Nocomis asper) at the Oklahoma Aquarium.
  • Photo: A walleye (Sander vitreum) at the Genoa National Fish Hatchery.
  • 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.
  • Vulnerable (IUCN) and federally endangered boulder darters (Etheostoma wapiti) at Conservation Fisheries, a native stream fish breeding center.
  • Photo: Bony-headed toad (Ingerophrynus galeatus) at Wroclaw Zoo.
  • Big-headed rainfrog or big-headed robber frog (Craugastor megacephalus) at Zoo Atlanta. This species is primarily from Panama.
  • Photo: A grey heron (Ardea cinerea) at the Plzen Zoo.
  • Photo: A male Himalayan blue sheep (Pseudois nayaur nayaur) at Padmaja Naidu Himalayan Zoological Park in Darjeeling, India.
  • A vulnerable robber frog (Pristimantis calcarulatus) near Mindo, Ecuador.
  • A Baird's rat snake (Elaphe bairdi) at the Omaha Zoo.
  • Photo: Flathead eel catfish (Gymnallabes typus) at L'aquarium tropical du palais de la Porte DorŽe.
  • A young female snowy owl (Bubo scandiacus).
  • Red-billed blue magpie (Urocissa erythrorhyncha erythrorhyncha) at the Houston Zoo. This is an offspring hatched at the Houston Zoo in 2012. She has learned to mimic many different species of birds that are housed around her.
  • A pink-backed pelican (Pelecanus rufescens) at the Sedgwick County Zoo in Wichita, Kansas.
  • Picture of critically endangered (IUCN) and federally endangered Edward's pheasants (Lophura edwardsi) at the Sunset Zoo.
  • A short-tailed weasel (Mustela erminea cicognanii) at the New York State Zoo.
  • A red reef hermit crab, Paguristes cadenati.
  • Photo: A grey-headed kite (Leptodon cayanensis monachus) at BioParque do Rio.
  • A Kenyan Sand Boa (Eryx colubrinus loveridgei) at Sedgwick County Zoo.
  • A derbyana flower beetle (Dicronorrhina derbyana) at the St. Louis Zoo.
  • Photo: A giant scops owl (Otus gurneyi) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list and as federally endangered.
  • Photo: Green filefish (Monacanthus ciliatus) at Pure Aquariums.
  • Picture of a Brazilian free-tailed bat (Tadarida brasiliensis) at Night Wings Inc., in Lubbock, Texas.
  • Photo: Blossom headed parakeet, Psittacula roseata juneae, at Loro Parque Fundacion.
  • A Florida kingsnake (Lampropeltis getula floridana) at Santa Fe Community College Teaching Zoo.
  • A Socotra Island Blue Baboon (Monocentropus balfouri) at Museum of Nature South Tyrol.
  • Photo: A a pair of endangered gray gibbons (Hylobates muelleri muelleri) at the Miller Park Zoo.
  • Photo: Dwarf clawed frog (Hymenochirus boulengeri) at the Budapest Zoo.
  • A Coqui frog (Eleutherodactylus coqui) at Zoo Atlanta. A very prolific frog from Puerto Rico that is now an invasive species in both Florida and Hawaii.
  • Photo: A red capped-oranda, a fancy breed of goldfish at Ocean Park in Hong Kong.
  • A splendid leaf frog (Cruziohyla sylviae) at the National Aquarium in Baltimore.
  • Western harvest mouse (Reithrodontomys megalotis) at Cedar Point Biological Station.
  • A crested toad (Bufo typhonius) at the Houston Zoo.
  • Picture of a fork-tailed kite (Milvus migrans affinis) at the Healesville Sanctuary.
  • Photo: A mangrove snake (Boiga dendrophila dendrophila) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • A wartyskin frogfish (Antennarius maculatus) at the Monterey Bay Aquarium.
  • A white peacock butterfly (Anartia jatrophae) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A portrait of a turkey vulture (Cathartes aura).
  • A western painted turtle (Chrysemys picta) at the Oregon Zoo.
  • The Salt Creek tiger beetle (Cicindela nevadica lincolniana) in a lab at the University of Nebraska-Lincoln. With a count of 205 adults emerging in 2010, 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.
  • Photo: An endangered Iberian lynx (Lynx pardinus) at the Madrid Zoo. This is a male named Kalama, part of a breeding program for this rare cat species.
  • Photo: Slender sea robin (Prionotus scitulus) at Gulf Specimen Marine Lab and Aquarium.
  • Picture of a Costa Rican tiger rump tarantula (Cyclosternum fasciatum) at the Brevard Zoo.
  • Photo: A bronze corydoras catfish (Corydoras aeneus) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Picture of Raphael, an endangered 8 1/2 week-old Bengal tiger cub (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Picture of an Andean tinamou (Nothoprocta pentlandii) at Tracy Aviary.
  • A half-day-old hatchling leatherback turtle (Dermochelys coriacea) from Bioko Island. (IUCN: Critically Endangered, US: Endangered)
  • Picture of a scaled pigeon (Columba speciosa) at the Nispero Zoo in Panama.
  • Photo: A yellow-throated toucan (Ramphastos ambiguus) at Ocean Park in Hong Kong.
  • A blue monkey (Cercopithecus mitis stuhlmanni) at the Omaha Henry Doorly Zoo and Aquarium.
  • Great billed parrot (Tanygnathus megalorynchos) at Loro Parque Fundacion.
  • Photo: A male Chinese ring necked pheasant (Phasianus colchicus torquatus) at the Plzen Zoo.
  • Photo: Two critically endangered Negros warty pigs (Sus cebifrons negrinus) at Negros Forest Park.
  • Photo: A humphead cichlid (Cyphotilapia frontosa) at the Denver Zoo.
  • Photo: Scarab Beetle (Carabus hortensis) at the Plzen Zoo in the Czech Republic.
  • Photo: Giant wood rail (Aramides ypecaha) in Choussy, France.
  • Picture of female Himalayan wolves (Canis lupus himalayensis) at the Padmaja Naidu Himalayan Zoological Park, in Darjeeling, India.
  • Photo: A pair of true silver pheasants (Lophura nycthemera nycthemera) from a private collection.
  • Picture of a brown-throated parakeet (Eupsittula pertinax arubensis) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Photo: A helmet incubator frog (Hemiphractus scutatus) at Centro Jambatu in Quito, Ecuador.
  • Picture of a vulnerable (IUCN) and federally threatened Atlantic loggerhead turtle (Caretta caretta) at Riverbanks Zoo.
  • A critically endangered Indochinese box turtle (Cuora galbinifrons) at the Tennessee Aquarium.
  • Photo: Collared tree lizard (Plica plica) at the London Zoo.
  • Picture of a black vulture (Coragyps atratus) at the Sutton Avian Research Center.
  • Picture of an endangered Alabama waterdog (Necturus alabamensis) at the Cincinnati Zoo.
  • Eastern indigo snake, Drymarchon corais couperi, at the Toledo Zoo. This species is federally threatened.
  • African fire-finches (Lagonosticta rubricata) at the San Antonio Zoo.
  • An Indian flying fox (Pteropus giganteus) at the Omaha Henry Doorly Zoo, in Omaha, Nebraska.
  • An African brush-tailed porcupine (Atherurus africanus) at the Omaha Zoo.
  • Photo: Savanna monitor lizard (Varanus exanthematicus) at the Denver 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.
  • Photo: Blue-headed wrasse (Thalassoma bifasciatum) from Gulf Specimen Marine Laboratories.
  • Picture of a Vicente's poison frog (Oophaga vicentei) at the Panama Amphibian Rescue and Conservation Project.
  • Photo: An Asian glossy starling (Aplonis panayensis panayensis) at the Avilon Zoo.
  • A piping plover (Charadrius melodus). (US: Endangered)
  • Photo: Senegal bichir (Polypterus senegalus) at the Moscow Zoo.
  • A Catalina macaw (Ara aranuna x macao) at Reptile Gardens. This individual is a hybrid of a blue and gold/ scarlet macaw.
  • A male mimic poison frog (Ranitomeya imitator) with a single tadpole on his back, from a private collection.
  • Photo: Fire eel (Mastacembelus erythrotaenia) at Zoo Negara.
  • Photo: White woodpecker (Melanerpes candidus) in Choussy, France.
  • A studio portrait of a bush cicada (Megatibicen dorsatus), in Neale Woods, Nebraska.
  • A long-eared owl (Asio otus tuftsi) at The Wildlife Center in Espanola, NM.
  • Juvenile American bullfrog (Lithobates catesbeiana) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • An Indian rock python (Python molurus) at the Cleveland Metroparks Zoo.
  • Photo: Pinecone fish (Monocentris japonica) at the Dallas Children's Aquarium.
  • Photo: A common bleak (Alburnus alburnus) at Fluviário de Mora in Portugal.
  • Rough-legged hawk (Buteo lagopus sanctijohannis) at the Toledo Zoo.
  • Picture of a blue-throated toucanet (Aulacorhynchus caeruleogularis) at the Dallas World Aquarium.
  • Photo: An Atlantic tarpon (Megalops atlanticus) at Gulf Specimen Marine Lab.
  • Photo: A female undescribed crayfish from New Guinea (Cherax sp.) at Petra Aqua.
  • Picture of a male, Western hinge-back tortoise (Kinixys belliana nogeuyi) named Harvey at the Brevard 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.
  • A Mandarin emperor newt (Tylototriton shanjing) at the Cheyenne Mountain Zoo.
  • Photo: A two spot crayfish, Cambarus graysoni, wild caught near West Liberty, West Virginia.
  • Photo: A sauger (Sander canadensis) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • Picture of red-eye wrasse (Cirrhilabrus solorensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A European rabbit (Oryctolagus cuniculus) at Zoopark Zajezd.
  • Photo: A male cabot tragopan (Tragopan caboti) at Pheasant Heaven.
  • Arabian oryx, Oryx leucoryx, at the Phoenix Zoo. This species is listed as vulnerable.
  • Uno, a federally endangered Florida panther (Puma concolor coryi) at the Naples Zoo. A gunshot wound caused Uno to go blind in 2014.
  • Photo: A greater vasa parrot (Coracopsis vasa) at the Plzen Zoo.
  • A female (yellow in color) Golden Asian mantis (Hierodula venosa) at the Bugarium at the Albuquerque BioPark.
  • A critically endangered mongoose lemur (Eulemur mongoz) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A yellow-spotted millipede, Harpaphe haydeniana, at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Photo: A yellowhead jawfish (Opistognathus aurifrons) at the Audubon Aquarium of the Americas.
  • A northern double-collared sunbird (Cinnyris reichenowi preussi) in Bioko Island Equatorial Guinea.
  • Photo: A Pel’s fishing owl (Scotopelia peli) at the Monticello Center in Italy.
  • Photo: Asian blue quail (Coturnix chinensis) at Bay Beach Wildlife Sanctuary
  • Photo: A white-striped gecko (Gonatodes vittatus) from a private collection.
  • Vulnerable (IUCN) and federally endangered Palawan peacock-pheasant (Polyplectron napoleonis) at the Houston Zoo.
  • Photo: An Arabian pupfish (Aphanius dispar) at Aquarium Berlin.
  • Photo: Barren River crayfish, Faxonius barrenensis, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from the Barren River, KY.
  • A nine-banded armadillo (Dasypus novemcintus) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Photo: A jewel beetle (Chrysina beyeri) at the Audubon Insectarium in New Orleans.
  • Photo: Crucifix Toad (Notaden bennettii) at the Melbourne Zoo
  • Picture of a transcaucasian long-nosed viper (Vipera transcaucasiana) at the St. Louis Zoo.
  • A green tree python (Morelia viridis) at the Riverside Zoo.
  • Photo: Chevron patter color morph of the Limosa harlequin frog (Atelopus limosus) at the Panama Amphibian Rescue and Conservation Project.
  • Photo: A mangrove snake (Boiga dendrophila dendrophila) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Photo: A hill prairie spittlebug (Lepyronia gibbosa) photographed at Spring Creek Prairie Audubon Center near Denton, NE. This animal was originally collected from Bobcat Prairie near Denton, NE.
  • Photo: A yellow-striped trinket snake (Coelognathus flavolineatus) at the Dallas Zoo.
  • A vulnerable Mexican caecilian (Dermophis mexicanus) at the Tennessee Aquarium.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Puerto Rican crested toad (Peltophryne lemur) at the Sedgwick County Zoo in Wichita, Kansas. (IUCN: Critically Endangered, and federally threatened)
  • Photo: Alaska blackfish (Dallia pectoralis) at the Alaska SeaLife Center in Seward, AK.
  • Picture of a male pompadour cotinga (Xipholena punicea) at the Houston Zoo.
  • Photo: A common house cricket (Acheta domestica).
  • A robber frog (Eleutherodactylus sp.) near Mindo, Ecuador.
  • A northern pygmy-owl (Glaucidium gnoma pinicola) at The Wildlife Center in Espanola, NM.
  • Photo: Stag beetle (Rheatulus didieri) at Malacca Butterfly and Reptile Sanctuary.
  • Picture of a federally endangered mother and son jaguar (Panthera onca) at the Brevard Zoo in Melbourne, FL.
  • A tawny frogmouth (Podargus strigoides) at the Fort Worth Zoo.
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