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 41,264-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 12,476 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 diablito, also known as a little devil poison frog (Oophaga sylvatica) Bilsa, Ecuador locality, from a private collection.
  • Photo: A pair of gray-headed swamphen (Porphyrio poliocephalus) at North Florida Wildlife Center.
  • Photo: A rhinoceros auklet (Cerorhinca monocerata) at the Alaska SeaLife Center.
  • Photo: Blue cheeked amazon, Amazona dufresniana, at Loro Parque Fundacion.
  • A Sandhill crane (Antigone canadensis tabida) at the Sutton Avian Research Center.
  • Photo: Atlas beetle (Chalcosoma caucasus) at the Bugarium at the Albuquerque BioPark.
  • Ornate horned frog (Ceratophrys ornata) at the Tennessee Aquarium.
  • A captive, five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea. (IUCN: Vulnerable)
  • A picture of a Southern black-knobbed map turtle (Graptemys nigrinoda delticola) from the Turtle Survival Center.
  • A federally endangered margay (Leopardus wiedii wiedii) named Carlotta at the Cincinnati Zoo. She’s a $30,000 cat because that’s what the court costs and fines added up to for the man who she was confiscated from in Indiana. She was most likely born in the wild and is nearing the end of her life span at the age of 19.
  • Photo: A lemon dove (Columba larvata) at the Jurong Bird Park.
  • Picture of a serval (Leptailurus serval) at the Denver zoo.
  • Photo: A male Harlequin quail (Coturnix delegorguei) at Safari Park Dvur Kralove.
  • Photo: European legless lizard (Pseudopus apodus thracius) at Parco Natura Viva.
  • Photo: A male Lady Amherst's pheasant (Chrysolophus amherstiae) at Pheasant Heaven.
  • Photo: An endangered Asian elephant (Elephas maximus).
  • A Sonoran desert toad (Incilius alvarius) at the Tulsa Zoo.
  • Photo: A rusty-spotted cat (Prionailurus rubiginosus phillips) at the Exmoor Zoo in England.
  • Photo: A Equatorial spitting cobra (Naja sumatrana miolepis) at the Avilon Zoo.
  • Photo: Purple swamphen (Porphyrio porphyrio porphyrio) at Wroclaw Zoo.
  • Photo: Sonora sucker (Catostomus insignis) at Mora National Fish Hatchery.
  • Red-necked grebe (Podiceps grisegena grisegena) at Monticello Center in Italy.
  • Picture of fire shrimp also known as blood shrimp or scarlet cleaner shrimp(Lysmata debelius) at Nebraska Aquatic Supply.
  • Photo: Pine marten (Martes martes) at the Moscow Zoo.
  • A West African dwarf crocodile (Osteolaemus tetraspis tetraspis) at the Lincoln Children's Zoo. This species is federally endangered and listed as vulnerable on IUCN.
  • Male and female brown-headed cowbirds (Molothrus ater).
  • Picture of a vulnerable golden Greek tortoise (Testudo graeca terrestris) at Pet Paradise.
  • A picture of a black-bellied plover or grey plover (Pluvialis squatarola cynosurae), in winter plumage, at the Marathon Wild Bird Center in Marathon, Florida.
  • Photo: A Clark's grebe (Aechmophorus clarkii) at the International Bird Rescue Center in San Pedro, CA.
  • Photo: A juvenile male giant stick insect (Spinohirasea bengalensis) at the Moscow Zoo.
  • Photo: Black-necked garter snake (Thamnophis cyrtopsis) at the Phoenix Zoo.
  • Photo: A Potosi pupfish (Cyprinodon alvarezi) at the Zoological Society of London.
  • Photo: A juvenile eastern cottontail rabbit (Sylvilagus floridanus mallurus) at the Carolina Wildlife Center, a place that rescues and rehabilitates injured and orphaned wildlife.
  • A Schaus’ swallowtail butterfly caterpillar (Heraclides aristodemus ponceanus) at the McGuire Center for Lepidoptera and Biodiversity.
  • Photo: A female clouded leopard (Neofelis nebulosa nebulosa) named ‘Hope’ at the Nashville Zoo. This species is listed as vulnerable.
  • Hairy bush viper (Atheris hispida) at Zoo Atlanta.
  • Photo: A Franklin’s ground squirrel (Poliocitellus franklinii) at the Wildlife Rehabilitation Center of Minnesota.
  • Photo: Giant katydid (Stilpnochlora couloniana) at the Budapest Zoo.
  • Photo: Haplochromis nyererei at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: Tokara habu pit viper (Protobothrops tokarensis) at the Saint Louis Zoo.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • A studio portrait of an American goldfinch (Spinus tristis pallidus) in Nebraska.
  • Photo: A bark scorpion (Centruroides elegans) at Aquarium Berlin.
  • Picture of a scarlet-crowned barbet (Capito aurovirens) at the Dallas World Aquarium.
  • A Rowley's palm pit viper (Bothriechis rowleyi) at the St. Louis Zoo.
  • A red-bellied side necked turtle (Emydura subglobosa) at the Fort Worth Zoo.
  • Photo: Two endangered oyster mussels (Epioblasma capsaeformis) photographed at the Aquatic Wildlife Conservation Center.
  • Picture of a red-sided garter snake (Thamnophis sirtalis parietalis) at Reptile Gardens.
  • Picture of a Eurasian lynx (Lynx lynx) at the Columbus Zoo.
  • Picture of a little lorikeet (Glossopsitta pusilla) at Healesville Sanctuary
  • Photo: A banded sculpin (Cottus carolinae) collected in Cherokee County, Oklahoma, at the Oklahoma City Zoo.
  • Photo: Saban anole (Anolis sabanus) at Wroclaw Zoo.
  • BBryn, 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 species of animals. Since there are no males left, this means only animals intercrossed with the Idaho race will survive. She died in 2008, marking the end of her genetic line. This subpopulation lost its sagebrush habitat as the land was developed for agriculture in the state of Washington.
  • Picture of red-crested finches (Coryphospingus cucullatus) at the Tulsa Zoo.
  • A black wood turtle (Rhinoclemmys funerea) at the San Antonio Zoo.
  • Photo: An Eurasian tree sparrow (Passer montanus saturatus) at Farmville de Bago on Negros Island in the Philippines.
  • Picture of a sharp-nosed crab (Scyra acutifrons) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A Seurat's spiny mouse (Acomys cahirinus seurati) at the Plzen Zoo.
  • A vulnerable double-wattled cassowary (Casuarius casuarius) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A fireball lily (Scadoxus cinnabarinus) from Bioko Island, Equatorial Guinea.
  • Black stag beetle (Dorcus titanus) at the Insectarium in New Orleans.
  • A critically endangered lesser sulphur-crested cockatoo (Cacatua sulphurea sulphurea) from the Gladys Porter Zoo in Brownsville, Texas.
  • A five-week-old endangered golden conure (Guaruba guarouba) at the Sedgwick County Zoo, Wichita, Kansas.
  • A red and black oranda goldfish (Carassius auratus auratus) at Ocean Park in Hong Kong.
  • A wild turkey (Meleagris gallopavo) at the Great Plains Zoo.
  • Yellow-collared lovebird (Agapornis personatus) at Piscilago Zoo in Bogota, Colombia.
  • Nene geese (Branta sandvicensis) at the Great Plains Zoo, Sioux Falls, South Dakota. (IUCN: Vulnerable; US: Endangered)
  • Picture of an Auckland tree weta (Hemideina thoracica) at the Auckland Zoo.
  • Photo: A male torrent duck (Merganetta armata armata) at Lundi Farm in Verl, Germany.
  • An egg containing a tadpole of a blue poison frog (Dendrobates azureus) from a private collection.
  • Vulnerable Pinyon jay (Gymnorhinus cyanocephalus) at the University of Nebraska-Lincoln. This and other corvid species are studied to learn how cognition evolved, how animals use cognitive abilities to solve problems in nature and how cognitive abilities can affect the evolutionary process.
  • A venomous Jameson’s mamba (Dendroaspis jamesoni kaimosae) at Reptile Gardens.
  • Photo: Oriental fire-bellied toad (Bombina orientalis) at the Denver Zoo.
  • A red-lored Amazon parrot (Amazona autumnalis autumnalis) at the World Bird Sanctuary.
  • Photo: Woodland dormouse (Graphiurus murinus) at the Budapest Zoo.
  • A federally endangered Florida panther (Puma concolor coryi) named Lucy at Tampa's Lowry Park Zoo.
  • A marbled running frog (Kassina maculosa) at the Vancouver Aquarium.
  • Photo: A granite night lizard (Xantusia henshawi) at a private collection.
  • Photo: A fledgling European barn owl (Tyto alba guttata) from the Plzen Zoo in the Czech Republic.
  • A Great Plains toad (Anaxyrus or Bufo cognatus) at the Phoenix Zoo.
  • Photo: An Australian pelican (Pelecanus conspicillatus) at the Plzen Zoo in the Czech Republic.
  • Photo: A common spotted cuscus (Spilocuscus maculatus) at a private collection in Jakarta, Indonesia.
  • Picture of a lesser short-nosed fruit bat (Cynopterus brachyotis) at the Lubee Bat Conservancy in Gainesville, Florida.
  • Picture of an African giant millipede (Archispirostreptus gigas) at Rolling Hills Wildlife Adventure near Salina, Kansas.
  • A picture of a giant water scavenger beetle (Hydrophilus triangularis) at Cedar Point Biological Station.
  • Photo: Inca stone fish (Tahuantinsuyoa macantzatza) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: A female Western fox squirrel (Sciurus niger rufiventer) at Greenwood Wildlife Rehabilitation Center in Longmont, Colorado.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • The extinct Xerces blue butterfly (Glaucopsyche xerces). This photo was taken at the Maguire Center for Lepidoptera and Biodiversity, Gainesville, FL. This is located on the campus of the University of Florida and is part of the Florida Museum of Natural History.
  • Photo: Long-snouted pipefish (Doryichthys boaja) at Faunia in Madrid, Spain.
  • Photo: Tamaulipas shiner (Notropis braytoni) at the Albuquerque BioPark's Aquatic Conservation Facility (ACF).
  • Photo: Pied-billed grebe (Podilymbus podiceps) from Nebraska Wildlife Rehab in Omaha, Nebraska.
  • Photo: Green grass lizard (Takydromus smaragdinus) at Wroclaw Zoo.
  • Photo: A puffing snake (Pseustes poecilonotus) at the Jacksonville Zoo and Gardens, Jacksonville, Florida.
  • A brown recluse spider (Loxosceles reclusa) at the Audubon Zoo in New Orleans.
  • Photo: A Southwest African lion (Panthera leo bleyenberghi) at the Lisbon Zoo. This species is listed as vulnerable by the IUCN.
  • Photo: A magnolia jumping spider (Lyssomanes viridis) at the University of Florida in Gainesville.
  • Picture of Coolio, a vulnerable yellow-shouldered amazon parrot (Amazona barbadensis) at Alabama Gulf Coast Zoo.
  • A rabbit snail (Tylomelania gemmifera) orange from a private collection.
  • Photo: A longfin inshore squid (Doryteuthis pealeii) at the Maine State Aquarium in West Boothbay, ME.
  • Western reef-heron (Egretta gularis schistacea) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • A midwest worm snake (Carphophis amoenus helenae) from the Shawnee National Forest.
  • Photo: A female bronze-tailed peacock-pheasant (Polyplectron chalcurum chalcurum) at a private collection.
  • Picture of an Asian garden dormouse (Eliomys melanurus) at the Philadelphia Zoo.
  • A musk ox (Ovibos moschatus moschatus) at the University of Alaska in Fairbanks, AK.
  • Photo: Walking stick (Trachythorax maculicollis) at the Budapest Zoo.
  • Photo: Southern pill woodlouse (Armadillidium depressum) at the Exmoor Zoo.
  • Photo: Central Plains milk snake (Lampropeltis triangulum gentilis) collected in Jefferson County, Nebraska.
  • Two Zanzibar red bishops (Euplectes nigroventris) at Safari Park Dvur Kralove. The male is more colorful than the female.
  • A picture of a parasitic fly (Gymnosoma sp.) at Graham's Quinta dos Malvedos Vineyard.
  • A studio portrait of an American goldfinch (Spinus tristis pallidus) in Nebraska.
  • A blue-sided garter snake (Thamnophis similis similis) at the Lowry Park Zoo in Tampa, FL.
  • Photo: A male tailless whipscorpion (Paraphrynus laevifrons) from the University of Nebraska-Lincoln.
  • A vulnerable broad-headed snake (Hoplocephalus bungaroides) at the Healesville Sanctuary in Healesville, Victoria, Australia
  • Picture of Laos warty newts (Paramesotriton laoensis) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: Crested serpent eagle (Spilornis cheela burmanicus) at ACCB in Siem Reap, Cambodia.
  • A Baird's rat snake (Elaphe bairdi) at the Omaha Zoo.
  • A striped owl (Asio clamator forbesi) at Parque Jaime Duque near Bogota, Colombia.
  • An endangered Malayan tiger, Panthera tigris jacksoni, at the Omaha Zoo.
  • Photo: A Tennessee darter (Etheostoma tennesseense) photographed at Conservation Fisheries.
  • Picture of a tube pea crab (Pinnixa chaetopterana) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: A giant blue bloom tarantula (Pamphobeteus nigricolor) at Museum of Nature South Tyrol.
  • A critically endangered Chinese alligator (Alligator sinensis) at the Fresno Chaffe Zoo.
  • A red-necked wallaby (Macropus rufogriseus) at the Gladys Porter Zoo.
  • Picture of a federally endangered scarlet-chested parrot (Neophema splendida) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
  • Photo: A king rail (Rallus elegans) at the Carolina Wildlife Center, a place that rescues and rehabilitates injured and orphaned wildlife.
  • A spotted salamander (Ambystoma maculatum) at Zoo Atlanta, Atlanta, Georgia.
  • Eastern fox snake (Pantherophis gloydi) at the Cleveland Metroparks Zoo.
  • An El Cope morph of the green and black poison dart frog (Dendrobates auratus) at the Baltimore Aquarium. This animal is a descendant of the few remaining animals in El Cope National Park in Panama, where the chytrid fungus may wipe out the animal at any time.
  • Photo: A green-cheeked, or red-crowned, Amazon parrot (Amazona viridigenalis) at the Kansas City Zoo.
  • A swamp darter (Etheostoma fusiforme) at Conservation Fisheries, a native stream fish breeding center in Knoxville. This fish is common and widespread in the southeastern U.S.
  • Photo: An Indonesian spitting cobra (Naja sputatrix) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Picture of an endangered Asian elephant (Elephas maximus).
  • Picture of common goldeneye ducks (Bucephala clangula) at Sylvan Heights Bird Park.
  • Picture of a vulnerable Syrian brown bear (Ursus arctos syriacus) at the Budapest Zoo.
  • Picture of a brown basilisk (Basiliscus vittatus) at the Dallas World Aquarium.
  • Picture of red-eye wrasse (Cirrhilabrus solorensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • A black ghost knifefish (Apteronotus albifrons) at River Safari, part of Wildlife Reserves Singapore.
  • Photo: A fish crow (Corvus ossifragus) named Minnow, at the Tennessee Aquarium.
  • Picture of an Asian garden dormouse (Eliomys melanurus) at the Philadelphia Zoo.
  • Photo: Channel-billed toucan (Ramphastos vitellinus) in Choussy, France.
  • Photo: Red sided garter snake (Thamnophis sirtalis infernalis) at the Exmoor Zoo.
  • A leaf beetle (Colaspis sp.) photographed at Spring Creek Prairie Audubon Center near Denton, NE. This animal was originally collected from Bobcat Prairie near Denton, NE.
  • Picture of a Southeastern five-lined skink (Plestiodon inexpectatus) at the Lowry Park Zoo in Tampa, Florida.
  • Photo: An endangered pinto abalone (Haliotis kamtschatkana) the Alutiiq Pride Shellfish Hatchery in Seward, AK.
  • Picture of a Florida pink millipede (Narceus americanus) at the St. Louis Zoo.
  • Photo: An endangered female Australian sea lion (Neophoca Cinerea) named Lexie at the Taronga Zoo in Sydney, Australia.
  • Photo: A Southern Brazilian ocelot (Leopardus pardalis mitis) from the Zoológico Nacional de Chile (Chilean National Zoo), Santiago, Chile.
  • Photo: A female Ijima’s copper pheasant (Syrmaticus soemmerringii ijimae) from a private collection.
  • Photo: Slate-colored seedeater (Sporophila schistacea) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Photo: A critically endangered common piping guan (Aburria pipile) named Cookie at the Miller Park Zoo. She likes to play with shoelaces or jewelry.
  • Picture of a Rollands damsel (Chrysiptera rollandi) at Nebraska Aquatic Supply.
  • Picture of a female tayra (Eira barbara biologiae) at the Summit Municipal Park in Gamboa, Panama.
  • Photo: Laboratory walking stick with juveniles (Carausius morosus) at the Biodiversity Hall of Natural History and Science Museum.
  • 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.
  • A picture of a white faced heron (Egretta novaehollandiae novaehollandiae) at the Plzen Zoo.
  • Photo: A Broadley's bush viper (Atheris broadleyi) at Reptile Lagoon in Hamer, South Carolina.
  • A northern flying squirrel (Glaucomys sabrinus) (three months old, male) at Wildlife Images, a rehabilitation center near Merlin, OR.
  • A male painted bunting (Passerina ciris) at the Brown Ranch in Texas. (IUCN: Near Threatened)
  • Photo: Pygmy rock crab (Glebocarcinus oregonensis) at the Alaska SeaLife Center in Seward, AK.
  • Picture of a flame hawkfish (Neocirrhites armatus) at Pure Aquariums.
  • Photo: Flower beetle (Pachnoda abyssinica) at the Moscow Zoo.
  • A green tree python (Morelia viridis) at the Riverside Zoo.
  • Picture ofSouth African shelducks (Tadorna cana) at the Palm Beach Zoo. The male has the gray head.
  • Photo: A rock gunnel (Pholis gunnellus) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: A scorpion mud turtle (Kinosternon scorpiodes) at the Chapultepec Zoo in Mexico City.
  • A Northern white-faced owl (Ptilopsis leucotis) at the Cincinnati Zoo.
  • Photo: An endangered Visayan tarictic hornbill (Penelopides panini panini) at Negros Forest Park.
  • Osage copperhead (Agkistrodon contortrix phaeogaster) at the Tulsa Zoo.
  • Critically endangered Roti Island snake-necked turtle (Chelodina mccordi) at the Toledo Zoo.
  • Photo: Colorado desert shovelnose snake, Chionactis occipitalis annulata, at Phoenix Zoo.
  • Photo: A rufous-bellied thrush (Turdus rufiventris rufiventris) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: A Guadalupe fur seal (Arctocephalus townsendi) at SeaWorld San Diego.
  • Photo: A Brazilian blue dwarf beauty (Dolichothele diamantinensis) from a private collection.
  • Photo: Arizona skunk (Mephitis mephitis estor) at Southwest Wildlife Conservation Center.
  • Photo: An endangered male southern mountain reedbuck (Redunca fulvorufula fulvorufula) at Tierpark Berlin.
  • Picture of a masked cardinal (Paroaria nigrogenis) at the National Aviary breeding center in Palmar, Colombia.
  • Picture of a whistling kite (Haliastur sphenurus) at Healesville Sanctuary.
  • A North American beaver (Castor canadensis).
  • Photo: Southern freetail bat (Mormopterus planiceps) at Victoria, Australia.
  • A federally endangered Karner blue butterfly, Lycaeides melissa samuelis, emerges from pupae.
  • A picture of a tammar wallaby (Notamacropus eugenii) at the Lincoln Children's Zoo.
  • A derbyana flower beetle (Dicronorrhina derbyana) at the St. Louis Zoo.
  • Photo: A common poorwill (Phalaenoptilus nuttallii) at the Wildlife Rehabilitation Center of Northern Utah.
  • Photo: A female Venezuelan red howler monkey (Alouatta seniculus juara) at Mantenedor da Fauna Silvestre Cariuá.
  • An endangered Santa Anna River woolystar (Eriastrum densifolium ssp. sanctorum) at the Santa Anna River, California. Shown on the plant is the common milkweed bug (Lygaeus kalmii).
  • A northern map turtle (Graptemys geographica) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • A Mississippi sandhill crane (Grus canadensis pulla) at the Audobon Nature Institute, New Orleans, Louisiana.
  • Picture of ring-necked ducks (Aythya collaris) at Sylvan Heights Bird Park.
  • A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.
  • A white rhinoceros (Ceratotherium simum simum) at Rolling Hills Wildlife Adventure in Salina, Kansas.
  • A broken striped newt (Notophthalmus viridescens dorsalis) at the North Carolina Zoo.
  • A picture of a female band-winged meadowhawk (Sympetrum occidentale) at Cedar Point Biological Station.
  • Photo: An orange-spotted flower moth (Syngamia florella) at Tall Timbers Research Station and Land Conservancy in Tallahassee, Florida.
  • A western slimy salamander (Plethodon albagula) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Saharan sand viper (Cerastes vipera) at the Phoenix Zoo.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Picture of a critically endangered male and female white-cheeked gibbon(Nomascus leucogenys) at the Gladys Porter Zoo.
  • Picture of a three-toed amphiuma (Amphiuma tridactylum) at the Saint Louis Zoo.
  • Ashy pit viper (Trimeresurus puniceus) at the Houston Zoo.
  • A cotton-top tamarin (Saguinus oedipus) at the Rolling Hills Wildlife Adventure. (IUCN: Endangered)
  • A Florida cooter (Pseudemys floridana) at the Chapultepec Zoo in Mexico City.
  • Photo: A variable hawk (Geranoaetus polyosoma polyosoma) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • A federally endangered pink pigeon (Columba mayeri) at the Sedgwick County Zoo.
  • A green and gold brittlestar (Ophiarachna incrassata) at the Indianapolis Zoo.
  • Photo: A western worm snake (Carphophis vermis) from a private collection.
  • European white stork (Ciconia ciconia ciconia) at the Lincoln Children's Zoo.
  • Picture of a tropical screech owl (Megascops choliba luctisomus) at the Summit Municipal Park in Gamboa, Panama.
  • Photo: A pirate perch (Aphredoderus sayanus) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • Photo: A baboon tarantula (Harpactira overdijki) from a private collection.
  • Picture of a diablito, also known as a little devil poison frog (Oophaga sylvatica) Alto Tambo, Ecuador locality, from a private collection.
  • Photo: A common house cricket (Acheta domestica).
  • Photo: A Cape genet (Genetta tigrina) at North Somerset Bird of Prey Centre in England.
  • Photo: A West African green mamba (Dendroaspis viridis) at Reptile Gardens.
  • Picture of a horned puffin (Fratercula corniculata) at the Monterey Bay Aquarium.
  • Photo: A green bright eyed frog (Boophis viridis) wild caught in Andasibe, Madagascar.
  • Photo: Crab trap worm (Lysarete brasiliensis) from Gulf Specimen Marine Laboratories.
  • Photo: A timber rattlesnake (Crotalus horridus horridus) at Reptile Gardens.
  • Photo: A treefish (Sebastes serriceps) at the Downtown Aquarium in Denver, Colorado.
  • A black spotted newt (Notophthalmus meridionalis) at the San Antonio Zoo. (IUCN: Endangered)
  • Photo: Shovelnose ray (Glaucostegus typus) at Shark Reef Aquarium.
  • A federally endangered timber wolf (Canis lupus) named Kenai at the New York State Zoo.
  • A vulnerable (IUCN) citico darter (Etheostoma sitikuense) at Conservation Fisheries, a native stream fish breeding center.
  • Photo: An unidentified starlet coral (Siderastrea sp.) at the Akron Zoo.
  • A bumblebee dart frog (Dendrobates leucomelas) at the Omaha Zoo.
  • Picture of a female white-faced ibis (Plegadis chihi) at Tracy Aviary.
  • Photo: An unidentified caterpillar (Noctuidae sp.) at Graham's Quinta dos Malvedos Vineyard.
  • A critically endangered (IUCN) and federally endangered Jamaican boa (Chilabothrus subflavus) at the St. Louis Zoo.
  • An Andean porcupine (Coendou quichua) named Piper at the Saint Louis Zoo.
  • 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.
  • Photo: South African pygmy mouse (Mus minutoides) at the Plzen Zoo in the Czech Republic.
  • Photo: A Grandidier's Madagascar swift, Oplurus grandidieri, at the Plzen Zoo.
  • A vulnerable African elephant (Loxodonta africana) at the Indianapolis Zoo.
  • Photo: Three female leopard geckos (Eublepharis macularius) at the Sunset Zoo in Manhattan, Kansas.
  • A picture of a Darwin snake-necked turtle (Chelodina kurrichalpongo) from the Turtle Survival Center.
  • Photo: A speckled rattlesnake (Crotalus mitchelli pyhrrus) at Reptile Gardens.
  • Photo: A purple tailed imperial pigeon (Ducula rufigaster) at the Jurong Bird Park.
  • Picture of a crane hawk (Geranospiza caerulescens) at the PanAmerican Conservation Association in Gamboa, Panama.
  • A Barbary dove (Streptopelia risoria) at the Riverside Zoo, Scottsbluff, Nebraska.
  • Photo: Sable (Martes zibellina) at the A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Science.
  • Photo: A male and female Northern Italian alpine newt (Mesotriton alpestris apuanus) at WWT Slimbridge in England.
  • Photo: A tarantula (Phormingochilus everetti) from a private collection.
  • Picture of a vulnerable (IUCN) and federally endangered Western tragopan (Tragopan melanocephalus) at Himalyan Nature Park in Kufri, India.
  • Photo: A puffing snake (Pseustes poecilonotus) at the Jacksonville Zoo and Gardens, Jacksonville, Florida.
  • 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.
  • A vulnerable Swainson's toucan (Ramphastos ambiguus swainsonii) at the Omaha Henry Doorly Zoo, in Omaha, Nebraska.
  • Photo: A Betsileo reed frog from Madagascar (Heterixalus betsileo) at the Plzen Zoo in the Czech Republic.
  • Photo: A walleye surfperch (Hyperprosopon argenteum) at California Science Center in Los Angeles, California.
  • Picture of East Indian grey teal ducks (Anas gibberifrons gibberifrons) at Sylvan Heights Bird Park.
  • Photo: Kokanee salmon (Oncorhynchus nerka) photographed at Downtown Aquarium in Denver, Colorado.
  • Indian tent turtle (Kachuga tentoria) at the Tennessee Aquarium.
  • Picture of a skilletfish (Gobiesox strumosus) at the Virginia Aquarium.
  • Photo: A Swainson's thrush (Catharus ustulatus swainsoni) at the Wildlife Rehab Center of Minnesota.
  • Photo: A Shaw’s jird (Meriones shawi) from a private collection collected from Egypt.
  • A federally-endangered Key Largo wood rat, Neotoma floridana smalli, Crocodile Lake National Wildlife Refuge, Key Largo, Florida. There are approximately 250 or fewer of these animals left.
  • Northern grasshopper mouse (Onychomys leucogaster) at the Omaha Zoo.
  • Photo: Snail darter (Percina tanasi) at Conservation Fisheries.
  • Photo: An atlas moth (Attacus atlas) at the Butterfly Pavilion.
  • Spotfin chubs (Erimonax monacha) at Conservation Fisheries, a native stream fish breeding center. This species is federally listed as threatened.
  • A plain chachalaca (Ortalis vetula) from the Gladys Porter Zoo in Brownsville, Texas.
  • Western toad (Anaxyrus boreas) at the Sunriver Nature Center in Deschutes County, OR.
  • Photo: A variable squirrel (Callosciurus finlaysonii cinnamomeus) at Phnom Tamao Wildlife Rescue Center - Wildlife Alliance.
  • Photo: A critically endangered male cichlid (Pseudotropheus saulosi) from a private collection.
  • A juvenile Wied's marmoset (aka Kuhlii's marmoset)(Callithrix kuhlii) at the Lincoln Childrens Zoo.
  • Photo: A critically endangered (IUCN) and federally endangered Bali starling (Leucopsar rothschildi) at the Houston Zoo. This bird persists outside of captivity only because captive bred individuals have continued to be released into the wild.
  • Photo: A Gambian epauletted fruit bat (Epomophorus gambianus) at the Plzen Zoo.
  • A Taylor's bug-eyed frog (Theloderma stellatum) at the Fresno Chaffe Zoo.
  • Photo: A Chicago gartersnake (Thamnophis sirtalis semifasciatus) at the Indianapolis Zoo.
  • A Mexican pine snake (Pituophis deppei) at the Chapultepec Zoo, Mexico City, Mexico.
  • Picture of a small cabbage white butterfly (Pieris rapae rapae) at Healesville Sanctuary.
  • Photo: Red-spot assassin bug (Platymeris laevicollis) at the Bugarium at the Albuquerque BioPark.
  • Photo: A female barbary stag or atlas deer (Cervus elaphus barbarus) at Tierpark Berlin.
  • Peru marsupial frog (Gastrotheca peruana) at the National Aquarium in Baltimore.
  • Photo: An ornamental wandering spider (Viridasius fasciatus) at the Moscow Zoo.
  • Photo: Maracaibo wood turtle (Rhinoclemmys diademata) at Parque Jaime Duque near Bogota, Colombia.
  • A shining flea beetle (Asphaera lustrans).
  • A northern short-tailed shrew (Blarina brevicauda brevicauda) at Nebraska Wildlife Rehab.
  • A vulnerable Parker's golden frog (Mantella pulchra) from the Plzen Zoo in the Czech Republic.
  • Photo: A juvenile gray fox (Urocyon cinereoargenteus ocythous) at the Wildlife Rehab Center of Minnesota.
  • Photo: A pair of Taita Falcon (Falco fasciinucha) photographed at the Peregrine Fund in Idaho.
  • Photo: A black headed bunting (Emberiza melanocephala) in winter plumage at the Plzen Zoo in the Czech Republic.
  • Photo: An endangered rainbowfish (Rheocles vatosoa) at the Zoological Society of London.
  • Boulder darter (Etheostoma wapiti), a vulnerable (IUCN) and federally endangered species, at Conservation Fisheries, a native stream fish breeding center.
  • A Congo dwarf clawed frog (Hymenochirus boettgeri) at the Vancouver Aquarium.
  • Picture of a Western terrestrial garter snake or upper basin garter snake (Thamnophis elegans vagrans) from the wild in Utah.
  • Photo: Vulnerable babirusas (Babyrousa celebensis) at Night Safari, Singapore.
  • A picture of a European firebug (Pyrrhocoris apterus) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A Pacific parakeet (Psittacara holochlorus strenuus) from the town of Honnecourt Sur Escault, France.
  • Photo: A redspot sawtooth (Prioneris philonome) at Zoo Negara, Kuala Lumpur, Malaysia.
  • A red phased Eastern screech owl (Megascops asio floridanus) at the Audubon Center for Birds of Prey.
  • Photo: A yellowfin sole (Limanda aspera) at the Alaska SeaLife Center.
  • Picture of an endangered Black-breasted leaf turtle (Geoemyda spengleri spengleri) at the detroit zoo.
  • Picture of a vulnerable gray bamboo lemur (Hapalemur griseus griseus) named Li'l Bit at the Cincinnati Zoo.
  • Photo: Crab trap worm (Lysarete brasiliensis) from Gulf Specimen Marine Laboratories.
  • Photo: A juvenile big-eared opossum (Didelphis aurita) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Borneo eared frog (Polypedates otilophus) at the National Aquarium in Baltimore.
  • A dusky pygmy rattlesnake (Sistrurus malarius barbouri) at Reptile Gardens.
  • Photo: Texas toad (Bufo speciosus) at the San Antonio Zoo.
  • Picture of a female greylag goose, Anser anser, at Sylvan Heights Bird Park.
  • Photo: A glass frog (Nymphargus sp. nov. "orense”) at Balsa de los Sapos.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • A lilac-breasted roller, Coracias caudatus.
  • Photo: Endler fish (Poecilia wingei) from a private collection in Santa Cruz, Tenerife, Spain.
  • Gloyd’s cantil (Agkistrodon howardgloydi) at the St. Louis Zoo.
  • Photo: An endangered Ruivaco-do-oeste, Achondrostoma occidentale, a rare freshwater fish at the Vasco da Gama Aquarium.
  • Photo: Broad River spiny crayfish, Cambarus spicatus, at West Liberty University in West Liberty, WV. This specimen is from Broad River Basin, NC.
  • Photo: Variegated Grasshopper (Zonocerus variegatus) caught from the wild near Manjo, Cameroon.
  • Photo: A male Brazilian tanager (Ramphocelus bresilius) at the Zoo Berlin.
  • Photo: A yellow-headed Amazon parrot (Amazona oratrix oratrix) at the Kansas City Zoo.
  • A pocket mouse (Chaetodipus sp.) at the Omaha Zoo.
  • Photo: An Asian clam (Corbicula fluminea) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Picture of a plate-billed mountain toucan (Andigena laminirostris) at the Dallas World Aquarium.
  • Picture of a vulnerable Southeast Asian softshell turtle (Amyda cartilaginea) from the Cuc Phuong Turtle Conservation Center, Vietnam.
  • A gentoo penguin (Pygoscelis papua papua).
  • Photo: Cactus coral (Pavona cactus) at Butterfly Pavilion.
  • Photo: A male and a female lesser goldfinch (Spinus psaltria hesperophilus) at the Wildlife Rehabilitation Center of Northern Utah.
  • Blanchard's cricket frog (Acris crepitans blanchardi) at the Toledo Zoo.
  • Photo: American shad (Alosa sapidissima) at the Tracy Fish Collection Facility near Byron, CA
  • An eastern coachwhip (Masticophis flagellum flagellum) from a private collection.
  • Picture of a red-crested finch (Coryphospingus cucullatus) at the Tulsa Zoo.
  • Photo: A Gelada baboons (Theropithecus gelada) at Parco Natura Viva in Bussolengo, Italy.
  • Fat tailed gerbil (Pachyuromys duprasi) at the Omaha Zoo.
  • Photo: A male Australian whistling spider (Selenocosmia crassipes) from the Melbourne Museum
  • Photo: Tiburon burrowing frog (Eleutherodactylus aporostegus) at the Philadelphia Zoo. This species is found in Haiti and is critically endangered.
  • Picture of Rani, an endangered female Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Photo: A diamondback terrapin (Malaclemys terrapin) from a private facility in Lincoln, Nebraska.
  • Photo: A hairy frog (Trichobatrachus robustus) from a private collection.
  • Photo: Ornate velvet roach (Deropeltis paulinoi) at the Budapest Zoo.
  • A critically endangered (IUCN) and federally endangered Panamanian golden frog (Atelopus zeteki) at the Cheyenne Mountain Zoo.
  • Photo: Violet clipper (Parthenos sylvia violaceae) at the San Antonio Zoo.
  • A picture of a female blue ring-necked pheasant (Phasianus colchicus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: European medicinal leech (Hirudo medicinalis) at the Woodland Park Zoo.
  • Photo: Knobtail gecko (Nephrurus levis) at the Phoenix Zoo.
  • Photo: Red burrowing crayfish, Cambarus carolinus, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from the Saluda River System, SC.
  • Photo: Chinese pond mussel (Sinanodonta woodiana) from a private collection.
  • A broadwing hawk (Buteo platypterus).
  • Photo: A Percival's spiny mouse (Acomys percivali) at the Plzen Zoo.
  • Photo: Tri-colored hognose snake (Lystrophis pulcher) from a private collection.
  • Photo: A long-spined sea urchins (Diadema antillarum) at Mote Tropical Research Laboratory.
  • Photo: A goldeye (Hiodon alosoides) at the Schramm Education Center near Gretna, NE.
  • A St. Andrew beach mouse (Peromyscus polionotus peninsularis) 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 Carolina spring salamander (Gyrinophilus porphyriticus dunni) at the North Carolina Zoo in Asheboro, North Carolina.
  • A wild caught orangethroat darter (Etheostoma spectabile) in Missouri.
  • An endangered Baird's tapir (Tapirus bairdii) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • A small-mouthed salamander (Ambystoma texanum) from a private collection.
  • Picture of a Southeastern five-lined skink (Plestiodon inexpectatus) at the Lowry Park Zoo in Tampa, Florida.
  • Photo: An Indian giant flying squirrel (Petaurista philippensis) at Night Safari, part of Wildlife Reserves Singapore.
  • Photo: Philippine leaf-spade (Phyllium philippinicum) at the Moscow Zoo.
  • Photo: Tiger cowrie (Cypraea tigris) at Butterfly Pavilion.
  • Imperial parrot (Amazona imperialis) at the Rare Species Conservatory Foundation. This is one of just two imperial parrots in captivity, and the only one captive in the U.S. This bird is endangered, with just 350-450 birds in the wild on the island of Dominica in the eastern Caribbean. This bird was hand raised.
  • Picture of an Eastern bearded dragon (Pogona barbata) at the Auckland Zoo.
  • Photo: A male Eastern spotted skunk (Spilogale putorius interrupta) from a private collection.
  • Photo: A three-spot damselfish (Stegastes planifrons) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A female Pennsylvania funnel web spider (Agelenopsis pennsylvanica) from Lincoln, Nebraska.
  • Photo: Two stripetail darters (Etheostoma kennicotti) photographed at Conservation Fisheries.
  • Photo: Iberian barbel or Barbo-do-Norte (Luciobarbus bocagei) at the Environmental Education Center of the Ribeiras de Gaia.
  • Photo: A Cupid cichlid (Biotodoma cupido) at Dallas World Aquarium.
  • Picture of a spur-winged goose (Plectropterus gambensis) at the Cleveland Metroparks Zoo.
  • A northern red fan parrot (Deroptyus accipitrinus accipitrinus) at the Houston Zoo. This unusual Amazon basin parrot has a crown of brightly-colored head feathers it raises when it feels threatened or aggressive.
  • A blue-bellied roller (Coracias cyanogaster) from the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of an Australian ringneck (Barnardius zonarius) at the Budapest Zoo.
  • Photo: Six Lesser Bermuda land snails (Poecilozonites circumfirmatus) at the Zoological Society of London.
  • Red admiral butterfly (Vanessa atalanta) at Leech Lake, Minnesota.
  • Picture of a panther chameleon (Furcifer pardalis) at the Lincoln Children's Zoo.
  • Green toad (Anaxyrus debilis) at the Arizona-Sonora Desert Museum.
  • Picture of a northern walkingstick (Diapheromera femorata) at the St. Louis Zoo.
  • A springhaas (Pedetes capensis) at the Omaha Zoo.
  • A springhaas (Pedetes capensis) at the Great plains Zoo.
  • Photo: A Jerusalem cricket (Stenopelmatus fuscus) at the Butterfly Pavilion.
  • Picture of Australian finches from Plzen Zoo in the Czech Republic.
  • Picture of a double-striped thick-knee (Burhinus bistriatus) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Picture of Rani, an endangered female Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • A blue-sided garter snake (Thamnophis similis similis) at the Lowry Park Zoo in Tampa, FL.
  • 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: Moth (Chemerina caliginearia) at Graham's Quinta dos Malvedos Vineyard.
  • Picture of a horned puffin (Fratercula corniculata) at the Monterey Bay Aquarium.
  • A Merauke blue-tongued skink (Tiliqua gigas evanescens) at Zoo Atlanta.
  • An African collared or barbary dove (Streptopelia roseogrisea) at the Sedgwick County Zoo in Wichita, Kansas.
  • A golden eagle (Aquila chrysaetos canadensis) named Bubba from Nebraska.
  • Photo: Giant South American grasshopper (Tropidacris violaceus) at Wroclaw Zoo.
  • Picture of a red velvet ant (Dasymutilla occidentalis) at the Audubon Zoo in New Orleans, Louisiana.
  • A federally endangered West African slender-snouted crocodile (Mecistops cataphractus) from the private collection of Curt Harbsmeier.
  • Photo: Slate pencil urchin (Eucidaris thouarsii) at Aquarium of the Pacific in Long Beach, CA.
  • Photo: Broad-snouted caiman at the St. Augustine Alligator Farm.
  • Photo: An Acadian flycatcher (Empidonax virescens) at the St. Francis Wildlife Association in Quincy, Florida.
  • Photo: A colocolo or pampas cat (Leopardus colocolo garleppi) at Parque de las Leyendas in Lima, Peru.
  • Photo: Massive starlet coral (Siderastrea siderea) at Mote Tropical Research Laboratory.
  • Photo: A common prawn (Palaemon serratus) at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • A Clark's nutcracker (Nucifraga columbiana) at the School of Biological Sciences at the University of Nebraska-Lincoln. This and other corvid species are studied to learn how cognition evolved, how animals use cognitive abilities to solve problems in nature and how cognitive abilities can affect the evolutionary process.
  • A venomous Rhombic night adder (Causus rhombeatus) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A speckled rattlesnake (Crotalus mitchelli pyhrrus) at Reptile Gardens.
  • A coyote (Canis latrans) at the Great Plains Zoo.
  • Photo: East African spring hare (Pedetes surdaster) at the Plzen Zoo in the Czech Republic.
  • Photo: A female Elliot’s groove-throated chameleon (Trioceros ellioti) at Zoopark Zajezd.
  • Photo: Tenebrosus pheasant (Phasianus colchicus var. (mut.) tenebrosus, at Padmaja Naidu Himalayan Zoological Park.
  • Photo: A critically endangered Fiji crested iguana (Brachylophus vitiensis) at the Taronga Zoo in Sydney, Australia.
  • A swallow-tail kite (Elanoides forficatus) at the Audubon Center for Birds of Prey.
  • Photo: Mearn's coyote (Canis latrans mearnsi) named 'Sangria' at Southwest Wildlife Conservation Center.
  • Photo: A Brazilian black tarantula (Grammostola pulchra) at the Kansas City Zoo.
  • Photo: Critically endangered American burying beetles (Nicrophorus americanus) at the St. Louis Zoo.
  • Picture of a leopard seal (Hydrurga leptonyx) named Casey at the Taronga Zoo.
  • A Bachman’s sparrow (Peucaea aestivalis aestivalis) at the Greenwood Plantation near Thomasville, Georgia.Peucaea aestivalis
  • Picture of a silver arowana (Osteoglossum bicirrhosum) at Pet Paradise.
  • A male painted bunting (Passerina ciris) at the Brown Ranch in Texas. (IUCN: Near Threatened)
  • Photo: Eyelight fish (Photoblepharon palpebratum) at the Dallas World Aquarium.
  • An Eastern plains garter snake (Thamnophis radix) at the Cleveland Metroparks Zoo.
  • Photo: Stick insect (Ramulus nematodes blue) at the Moscow Zoo.
  • Photo: A male black grouse (Lyrurus tetrix tetrix) at Grouse Park Waterfowl in Cascade, Idaho.
  • 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 cape spinytail iguana (Ctenosaura hemilopha macrolopha) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A clown leporinus (Leporinus klausewitzi) at the Denver Zoo.
  • Photo: This is an undescribed crab species that resembles the species tiomanicum (Geosesarma sp. Tiomanicum) at Petra Aqua.
  • Picture of two Pompadour Cotinga (Xipholena punicea) at the Houston Zoo. The male has the color, the female is drab.
  • Photo: Oregon forestsnail (Allogona townsendiana) at the Trinity Western University.
  • Photo: A Hawfinch (Coccothraustes coccothraustes) at the Plzen Zoo in the Czech Republic.
  • Photo: An azure-winged magpie (Cyanopica cyanus) at the University of Nebraska-Lincoln.
  • Picture of a vulnerable Philippine duck (Anas luzonica) at the Sylvan Heights Bird Park.
  • Picture of a Greater sandhill crane (Grus canadensis tabida) at Tracy Aviary.
  • A studio portrait of a blotched tiger salamander (Ambystoma mavortium melanostictum) from a private collection.
  • Picture of a vulnerable Victoria crowned pigeon (Goura victoria) at the Columbus Zoo.
  • Photo: Indo tigerfish or finescale fish (Datnioides microlepis) at the Singapore Zoo.
  • A bumble bee walking toad (Melanophryniscus stelzneri) at Seattle Reptiles.
  • Picture of a red-bellied piranha (Pygocentrus nattereri) at the Oklahoma City Zoo.
  • Picture of an Eastern water dragon (Physignathus lesueurii lesueurii) at Wild Life Sydney Zoo.
  • Photo: A black pine snake (Pituophis lodingi)
  • Green woodhoopoe (Phoeniculus purpureus) at the Cleveland Metroparks Zoo.
  • Photo: Harlequin racerunner (Plica plica) at the Nashville Zoo.
  • A derbyana flower beetle (Dicronorrhina derbyana) at the St. Louis Zoo.
  • Photo: A yellow periwinkle (Littorina obtusata) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: Scaly sand darter (Ammocrypta vivax) at Conservation Fisheries.
  • Picture of baby little blue penguins (Eudyptula minor) at the Cincinnati Zoo.
  • Photo: A crested serpent eagle (Spilornis cheela bido) from Java at at Taman Safari.
  • Photo: A Eurasian great grey owl (Strix nebulosa lapponica) from the Plzen Zoo in the Czech Republic.
  • Photo: An endangered winter skate (Leucoraja ocellata) at the Maine State Aquarium.
  • Picture of a vulnerable Malayan box turtle (Cuora amboinensis) at the Assam State Zoo cum Botanical Garden.
  • A common wood-nymph (Cercyonis pegala) from Dieken Prairie near Undadilla, Nebraska.
  • Photo: An Indian roofed turtle (Pangshura tecta) at the Assam State Zoo cum Botanical Garden.
  • Picture of endangered Malagasy rainbow frogs (Scaphiophryne gottlebei) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • A picture of a Jones's girdled lizard (Cordylus jonesii) at Scaly Daves Herp Shack.
  • An endangered lappet-faced or Nubian vulture (Torgos tracheliotos) at Zoo Atlanta.
  • Budgett's frog (Lepidobatrachus laevis) at the National Aquarium in Baltimore.
  • A boa constrictor at the Sunset Zoo.
  • Photo: Spanish deer or red deer (Cervus elaphus hispanicus) at the Madrid Zoo.
  • Photo: A female critically endangered ray-finned fish species (Garra festai) at Zoo Plzeň.
  • Photo: A pointed Campeloma snail (Campeloma sp.) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • A Santa Rosa beach mouse (Peromyscus polionotus leucocephalus) at the USFWS office in Panama City, FL. This and several other beach mice subspecies are imperiled due to beach development. This species is also rare but is not currently listed under the ESA.
  • Picture of a critically endangered and federally endangered, female South China tiger, Panthera tigris amoyensis, at the Suzhou Zoo in China.
  • Photo: A fouling anemone (Aiptasiomorpha texaensis) at Gulf Specimen in Panacea, Florida.
  • Photo: A young, male brown goshawk (Accipiter fasciatus) at Moonlit Sanctuary.
  • A close up of a banded tree snail (Orthalicus floridensis) from Crocodile Lake National Wildlife Refuge on Key Largo.
  • Photo: African wildcat (Felis silvestris ocreata) at the Moscow Zoo.
  • Photo: A black-capped vireo (Vireo atricapilla) at Fort Hood, Texas.
  • Photo: A pair of streaked weavers (Ploceus manyar) at Taman Mini Indonesia Indah.
  • Photo: A common gull (Larus canus) at Lundi Farm in Verl, Germany.
  • Fringed ornamental tarantula (Poecilotheria ornata) at the Omaha Zoo.
  • Photo: Saharan sand viper (Cerastes vipera) at the Phoenix Zoo.
  • Photo: A rainbow shiner (Notropis chrosomus) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected Terrapin Creek, Cherokee County, AL.
  • Two vulnerable (IUCN) and federally endangered white-naped cranes (Antigone vipio) at the Columbus Zoo, Columbus, Ohio.
  • Photo: Blackbar soldierfish (Myripristis jacobus) at the Dallas World Aquarium.
  • Photo: Common palm civet or Asian palm civet (Paradoxurus hermaphroditus laotum) at ACCB in Siem Reap, Cambodia.
  • Picture of near threatened silvery langur (Trachypithecus cristatus) at the Lowry Park Zoo.
  • A leafcutter bee (Megachile parallela) photographed at a studio in Lincoln, NE.
  • Photo: An endangered Calamian deer (Hyelaphus calamianensis) at the LA Zoo.
  • A green anole (Anolis carolinensis) at the Audubon Zoo in New Orleans.
  • Picture of a Yuma myotis (Myotis yumanensis) at Northwest Trek Wildlife Park in Eatonville, Washington.
  • Photo: Bangka snakehead (Channa bankanensis) at Zoo Negara.
  • An African house snake (Lamprophis fuliginosus) at the Cleveland Metroparks Zoo.
  • The foot of a house gecko (Hemidactylus mabouia) collected in Chitengo Camp, in Gorongosa National Park.
  • Photo: A rusty-tipped page (Siproeta epaphus) at the Omaha Zoo.
  • Photo: A burgundy goliath bird eater (Theraphosa stirmi) at the Virginia Zoo.
  • Portrait of a male northern bobwhite quail (Colinus virginianus).
  • A western ribbon snake (Thamnophis proximus proximus) from the Shawnee National Forest.
  • Picture of a mud leech (Haemopis marmorata) at the St. Louis Zoo.
  • Photo: Plain parakeet, Brotogeris tirica, at Loro Parque Fundacion.
  • Photo: A water bug with eggs (Belostoma flumineum) at the Bugarium, a part of the ABQ BioPark.
  • An Arabian spiny mouse (Acomys dimidiatus homericus) at the Plzen Zoo.
  • Photo: A green floater (Lasmigona subviridis) photographed at the Aquatic Wildlife Conservation Center.
  • Photo: A large fig parrot (Psittaculirostris desmarestii desmarestii) at the Prague Zoo.
  • A jungle carpet python (Morelia spilota cheynei) at the Columbus Zoo.
  • Picture of a Clifford's diadem ratsnake (Spalerosophis diadema cliffordi) at Pet Paradise.
  • Picture of a badger (Taxidea taxus) at Wildlife Images, an animal rehabilitation center near Merlin, OR.
  • Picture of a critically endangered Palawan Island forest turtle (Siebenrockiella leytensis) at the Turtle Conservancy.
  • A four-toed salamander (Hemidactylium scutatum) at the Toledo Zoo, Toledo, Ohio.
  • A North American river otter (Lontra canadensis lataxina) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: Australian bass (Macquaria novemaculeata) at the Freshwater Ecology and Marine Biology Dept. at Templestowe College.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Blue-headed tree agama (Acanthocercus atricollis) at the Omaha Zoo.
  • Picture of a polyphemus moth caterpillar (Antheraea polyphemus) at the Minnesota Zoo.
  • Picture of a harlequin duck, Histrionicus histrionicus, at Sylvan Heights Bird Park.
  • Picture of a vulnerable (IUCN) and federally endangered Sudan cheetah (Acinonyx jubatus soemmeringii) at the Plzen Zoo in the Czech Republic.
  • A vulnerable (IUCN) Tarahumara leopard frog (Lithobates tarahumarae) at the Arizona-Sonora Desert Museum.
  • Photo: Blueband hermit crab (Pagurus samuelis) at the Loveland Living Planet Aquarium in Draper, UT.
  • Photo: A female Indochinese southern terrapin (Batagur affinis edwardmolii) at ACCB.
  • A European fire salamander, Salamandra salamandra salamandra.
  • A Florida cottonmouth (Agkistrodon piscivorus conanti) at the Archbold Biological Station.
  • Photo: Horsehead grasshopper (Pseudoproscopia latirostris) at Wroclaw Zoo.
  • Picture of a male summer tanager (Piranga rubra) at the Tulsa Zoo.
  • A ringed map turtle, Graptemys oculifera, at the National Mississippi River Museum and Aquarium in Dubuque, IA. This species is listed as endangered (IUCN) and federally threatened.
  • Australian shelducks (Tadorna tadornoides) at the Kansas City Zoo.
  • Photo: An Indian scops owl (Otus bakkamoena) at the North Somerset Bird of Prey Centre in North Somerset, United Kingdom.
  • Picture of a federally endangered Andean condor (Vultur gryphus) at the Lowry Park Zoo.
  • Scarlet macaws (Ara macao) at the Henry Doorly Zoo in Omaha, Nebraska.
  • A big brown bat (Eptesicus fuscus fuscus) at Nebraska Wildlife Rehab.
  • Critically endangered (IUCN) lemur leaf frogs (Hylomantis lemur), from the Panama, population, at Zoo Atlanta. This male and female frog are in amplexus, a state in which the male latches onto the female prior to egg laying and fertilization.
  • A green tree python (Morelia viridis) at the Riverside Zoo.
  • Picture of Chukar partridges (Alectoris chukar) from a private collection.
  • Photo: An American crocodile (Crocodilus acutus) at the Omaha Zoo.
  • Photo: A Philippine forest roundleaf bat (Hipposideros obscurus) at the University of the Philippines.
  • Photo: Walking stick (Sungaya inexpectata) at the Budapest Zoo.
  • Picture of sulphur-crested cockatoo (Cacatua galerita galerita) named peanut at the Minnesota Zoo.
  • 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.
  • El Segundo flower-loving fly (Rhaphiomidas terminatus terminatus). This insect was thought to be extinct since the end of the 1960s but a small remnant population of less than 100 individuals was discovered in the early 2000s.
  • A pair of vulnerable 1-year-old fossas, Cryptoprocta ferox, at the Omaha Zoo. This is Madagascar's largest mammalian predator, and its numbers are declining in the wild
  • Photo: Clingfish or skilletfish (Gobiesox strumosus) at Gulf Specimen Marine Lab and Aquarium.
  • A male eastern bongo (Tragelaphus eurycerus isaaci) at the Great Plains Zoo.
  • Photo: A Pueblan milk snake (Lampropeltis triangulum campbelli) at the Institute of Marine Mammal Studies (IMMS) at Gulfport, MS. This animal is part of their public education area.
  • A critically endangered (IUCN) and federally endangered Panamanian golden frog (Atelopus zeteki) at the Cheyenne Mountain Zoo.
  • Photo: Flamefish (Apogon maculatus) at the Albuquerque BioPark Aquarium.
  • Photo: A critically endangered Maingano cichlid (Melanochromis cyaneorhabdos) from a private collection.
  • Photo: A spoon head catfish (Planiloricaria cryptodon) at the Dallas World Aquarium.
  • Photo: Joel Sartore photographs jaguarundi at Bear Creek Feline Center.
  • Photo: Badge Huntsman (Neosparassus sp.) from the Melbourne Museum
  • A Malaysian golden gliding frog (Polypedates leucomystax) from a private collection.
  • Picture of a pink-eared duck, Malacorhynchus membranaceus, at Sylvan Heights Bird Park.
  • Photo: An unidentified caterpillar from the wild in Cameroon.
  • A screaming hairy armadillo (Chaetophractus vellerosus) at the Omaha Zoo.
  • Photo: An African pygmy falcon (Polihierax semitorquatus) at the ABQ BioPark in Albuquerque, New Mexico.
  • Great Basin spadefoot toad (Spea intermontana) at the Arizona-Sonora Desert Museum.
  • Photo: A unidentified darner dragonfly nymph (Aeshnidae sp.) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected near Davis, West Virginia
  • A Congo caecilian (Herpele squalostoma) at the Sedgwick County Zoo.
  • Picture of a Balkan Hermann's tortoise (Testudo hermanni hermanni) at the Saint Louis Zoo.
  • Photo: Violaceous jay (Cyanocorax violaceus) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: Neotropical green vine snake (Oxybelis fulgidus) from a private collection.
  • Photo: An ottoman viper (Vipera xanthina) at Reptile Gardens.
  • Smallmouth bass (Micropterus dolomieu) at the Genoa National Fish Hatchery.
  • Photo: Apalachicola kingsnake (Lampropeltis getula meansi) at the Cincinnati Zoo.
  • Photo: A tucano tetra (Tucanoichthys tucano) at the Dallas World Aquarium.
  • 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: A great weaver (Dinemellia dinemelli boehmi) at the Zoo Berlin.
  • Photo: A behind the scenes shot of a black-handed tamarin (Saguinus niger) holding a camera lens at Fundacao Jardim Zoologico de Brasilia.
  • 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.
  • Photo: Spiny red sea star (Hippasteria phrygiana) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A mimic shiner (Notropis volucellus) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Picture of a critically endangered electric blue gecko (Lygodactylus williamsi) at the Cheyenne Mountain Zoo in Colorado Springs, CO.
  • Picture of a Texas millipede (Orthoporus texicolens) at the Topeka Zoo.
  • Photo: 'Nyango', the only confirmed Cross River gorilla (Gorilla gorilla diehli) in captivity in the world.
  • A cave salamander (Eurycea lucifuga) at Zoo Atlanta, Atlanta, Georgia.
  • Photo: A domestic chicken (Gallus gallus domesticus) in Lincoln, Nebraska.
  • Photo: A sooty tern (Onychoprion fuscatus) at the Marathon Wild Bird Center in Marathon, Florida.
  • 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.
  • Picture of an ornate tetra or candy cane tetra (Hyphessobrycon bentosi) at Pure Aquariums.
  • Photo: A southern leopard tortoise (Stigmochelys pardalis pardalis) at the San Diego Zoo.
  • Photo: A female Jackson's chameleon or Jackson's three-horned chameleon (Trioceros jacksonii) at the Miller Park Zoo in Bloomington, IL.
  • Picture of an Ord's kangaroo rat (Dipodomys ordii) at Cedar Point Biological Station.
  • Photo: Panama blonde tarantula (Psalmopoeus pulcher) at the Omaha Zoo.
  • Photo: A Philippine king cobra (Ophiophagus hannah) at the Avilon Zoo. This species is listed as vulnerable on the IUCN Red List.
  • Madagascar spiny hopper frog (Scaphiophyrne pustulosa) from a private collection.
  • Photo: A Canada goose (Branta canadensis moffitti) at Zoo Idaho, Pocatello, Idaho, USA.
  • 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 juvenile frog on Bioko Island, Equatorial Guinea.
  • A sturgeon chub (Macrhybopsis gelida) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: A Southern naked-tailed armadillo (Cabassous unicinctus squamicaudis) at Parque Zoológico Huachipa in Lima, Peru.
  • A giant panda (Ailuropoda melanoleuca) at Zoo Atlanta. This endangered (IUCN) and federally endangered species is native to China. This panda’s name is Lun Lun.
  • Photo: A male Jones’s silver pheasant (Lophura nycthemera jonesi) at a private collection.
  • Photo: Kelp perch (Brachyistius frenatus) at East Bay Regional Park District.
  • Photo: A female blue-headed anole (Anolis allisoni) from a private collection.
  • Picture of an African pygmy goose (Nettapus auritus) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • A chuckwalla (Sauromalus ater) at the Rolling Hills Wildlife Adventure, Salina, Kansas.
  • Picture of an Eastern Phoebe (Sayornis phoebe) at Tall Timbers Research Station and Land Conservancy.
  • Pa Khiang Khang Lai (Lobocheilos melanotaenia) at Zoo Negara.
  • Photo: A western diamondback rattlesnake (Crotalus atrox) at Reptile Gardens.
  • A female cape spinytail iguana (Ctenosaura hemilopha macrolopha) at the Sedgwick County Zoo.
  • Photo: Balabac (Philippine) mousedeer (Tragulus nigricans) at the Avilon Zoo. This species is endangered on the IUCN Red List.
  • Photo: A husky-voiced wrinkled ground frog (Platymantis mimulus) at the University of the Philippines.
  • Purplish-backed jay (Cyanocorax beecheii) at the Houston Zoo.
  • Picture of a Yuman desert fringe-toed lizard (Uma rufopunctata) at the Sedgwick County Zoo.
  • A critically endangered (IUCN) Indochinese box turtle (Cuora galbinifrons) at the Riverbanks Zoo.
  • Photo: A pair of lesser Magellanic upland geese (Chloephaga picta) at Sylvan Heights Waterfowl.
  • 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.
  • Photo: Greater arid-land katydid (Neobarrettia spinosa) at the Audubon Insectarium in New Orleans.
  • Photo: Changeable hawk-eagle (Nisaetus cirrhatus limnaeetus) at ACCB in Siem Reap, Cambodia.
  • Photo: An Anatolian shepard (Canus lupus familiaris).
  • Photo: Walking stick (Aretaon sp. "Palawan") at the Budapest Zoo.
  • Photo: A common house martin (Delichon urbicum urbicum) at Hessilhead Wildlife Rescue.
  • A reindeer (Rangifer tarandus) at the Miller Park Zoo in Bloomington, Illinois.
  • Photo: A common toad (Rana arenarum) at Museo De Historia Natural "Alcide d'Orbigny".
  • Photo: A longnose gar (Lepisosteus osseus) at the Schramm Education Center near Gretna, NE.
  • Photo: An antimena chameleon, Furcifer antimena, from a private collection.
  • Photo: A Roan antelope (Hippotragus equinus) at Parco Natura Viva, in Bussolengo, Italy.
  • Photo: Wild nightcrawlers (Lumbricus terrestris) caught in Lincoln, Nebraska.
  • Photo: A crested coua (Coua cristata) at the Memphis Zoo in Tennessee.
  • An Australian osprey (Pandion haliaetus cristatus) at Healesville Sanctuary.
  • Picture of an Eastern Phoebe (Sayornis phoebe) at Tall Timbers Research Station and Land Conservancy.
  • Ocellate mountain viper (Montivipera wagneri) at the St. Louis Zoo.
  • A picture of a female blue-fronted dancer (Argia apicalis) at Cedar Point Biological Station.
  • Picture of a Kidneyshell mussel (Ptychobranchus fasciolaris) at the Columbus Zoo.
  • Photo: A critically endangered 18-year-old male tamaraw or Mindoro dwarf buffalo (Bubalus mindorensis) at Tamaraw Gene Pool Farm.
  • Photo: Prowfish (Zaprora silenus) at the Alaska SeaLife Center in Seward, AK.
  • Photo: An unidentified minnow mayfly (Baetidae sp.) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Seven Springs, Pennsylvania
  • Photo: A Giant Namibian sand gecko (Chondrodactylus angulifer angulifer) from a private collection.
  • Photo: Tiburon burrowing frog (Eleutherodactylus aporostegus) at the Philadelphia Zoo. This species is found in Haiti and is critically endangered.
  • Photo: A narrow-striped dwarf siren (Pseudobranchus axanthus axanthus) from a private collection.
  • A male house finch (Carpodacus mexicanus) at the Brown Ranch, Texas.
  • An endangered Coquerel's sifaka (Propithecus coquereli) at the Houston Zoo.
  • Picture of an endangered pileated gibbon with her eight-month-old infant (Hylobates pileatus) at the Gibbon Conservation Center
  • A red phased Eastern screech owl (Megascops asio floridanus) at the Audubon Center for Birds of Prey.
  • Peter's Angola colobus monkey, Colobus angolensis palliatus, at the Omaha Zoo.
  • Photo: A Pacific lyre crab (Hyas lyratus) at the Alaska SeaLife Center.
  • Photo: A timber rattlesnake (Crotalus horridus horridus) at Reptile Gardens.
  • Photo: A twin barred flying snake (Chrysopelea pelias) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Picture of a brown pelican (Pelecanus occidentalis) at the Santa Barbara Wildlife Care Network.
  • Photo: A cape ring-necked dove (Streptopelia capicola) named Joey at the Riverbanks Zoo in Columbia, SC.
  • Photo: A Hong Kong whipping frog (Polypedates megacephalus) from the wild in Cambodia.
  • Photo: A male Madagascar fish eagle (Haliaeetus vociferoides) at PBZT, the Parc Botanique Et Zoologique de Tsimbazaza.
  • Photo: A Chilean burrowing parrot (Cyanoliseus patagonus bloxami) at Unidad de Rehabilitación de Fauna Silvestre of the Buin Zoo.
  • Photo: Wrinkled grasshopper (Hippiscus ocelote) at Cedar Point Biological Station.
  • An endangered Forsten's (travancore) tortoise (Indotestudo forstenii) at Zoo Atlanta. This terrestrial species is from Indonesia's Sulawesi Island.
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • A confused eusarca moth (Eusarca confusaria), from Cross Lake, Minnesota.
  • Two Madagascar button quails (Turnix nigricollis) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Photo: A little bittern, Ixobrychus minutus, at the Plzen Zoo.
  • Florida green water snake (Nerodia floridana) at the Archbold Biological Station.
  • A crevice spiny lizard (Sceloporus poinsettii) at the Rolling Hills Wildlife Adventure in Salina, KS
  • Photo: An arboreal salamander (Aneides lugubris) from San Francisco State University.
  • A Stuart's milksnake (Lampropeltis triangulum stuarti) at the Great Plains Zoo.
  • Picture of a Koran angelfish (Pomacanthus semicirculatus) at Pure Aquariums.
  • Photo: An East African Gaboon viper (Bitis gabonica gabonica) at Reptile Gardens in Rapid City, South Dakota.
  • Picture of an opposum (Didelphis virginiana) at the Denver Zoo.
  • Photo: A Humboldt penguin at the Great Plains Zoo. (IUCN: Vulnerable)
  • Photo: Chattering lory (Lorius garrulus flavopalliatus) at Loro Parque Fundacion.
  • Photo: Penpoint gunnel (Apodichthys flavidus) at East Bay Regional Park District.
  • Delta map turtle (Graptemys nigrinoda delticola) at the Tennessee Aquarium.
  • Photo: A lappet-faced vulture (Torgos tracheliotos) at The International Centre for Birds of Prey in England.
  • Photo: Turquoise winged parrotlet (Forpus spengeli) at Loro Parque Fundacion.
  • Photo: A critically endangered addax (Addax nasomaculatus) at the Denver Zoo.
  • Southern vested tamandua (Tamandua tetradactyla straminea) at Tampa’s Lowry Park Zoo.
  • Photo: A green anaconda (Eunectes murinus) at the Amphibian Foundation.
  • Photo: Dark blue tiger butterfly (Tirumala septentrionis) at Butterfly Pavilion.
  • A sauger fish (Sander canadensis) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: A chocolate-banded millipede (Pelmatojulus ligulatus) at Zoopark Zajezd.
  • Photo: An African twig mantis (Popa sp.) at Aquarium Berlin.
  • A federally endangered Mexican gray wolf (Canis lupus baileyi) at the Wild Canid Survival and Research Center.
  • Picture of a chestnut teal (Anas castanea) at the Kansas City Zoo.
  • Photo: A roadside hawk (Rupornis magnirostris magniplumis) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: Northern pike (Esox lucius) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: A Cape vulture (Gyps coprotheres) at The International Centre for Birds of Prey in England.
  • An Espada's marsupial frog (Gastrotheca testudinea) at Pontificia Universidad Católica del Ecuador.
  • Photo: A spotted whip snake (Hemorrhois ravergieri) at Prague Zoo.
  • Photo: A critically endangered nsess (Stomatepia mariae) at Moscow Zoo.
  • A critically endangered Utila iguana (Ctenosaura bakeri) at the Miller Park Zoo.
  • Photo: Banded moray eel (Echidna polyzona) at Gulf Specimen Marine Lab.
  • Photo: A rusty-barred owl, Strix hylophila, at Tierpark Berlin.
  • Photo: A green-cheeked, or red-crowned, Amazon parrot (Amazona viridigenalis) at the Kansas City Zoo.
  • A female brown-headed cowbird (Molothrus ater) at the San Antonio Zoo.
  • Photo: A ruddy ground dove (Columbina talpacoti) at the Plzen Zoo in the Czech Republic.
  • Picture of a green sea urchin (Strongylocentrotus droebachiensis) at the Alaska SeaLife Center.
  • A red fox (Vulpes vulpes).
  • Photo: A wild caught unknown species of Katydid, collected in forest of Mt. Makiling, Luzon, Philippines.
  • Photo: A riverweed darter (Etheostoma podostemone) photographed at the Aquatic Wildlife Conservation Center.
  • A southern walleye (Sander vitreus vitreus) at the Genoa National Fish Hatchery.
  • Picture of a lesser snow goose (Chen caerulescens caerulescens) at Sylvan Heights Waterfowl Park.
  • Endangered tasmanian devils (Sarcophilus harrisii) at the Australia Zoo.
  • Picture of a blue phase of the strawberry poison dart frog (Oophaga (Dendrobates) pumilio) at the National Aquarium in Baltimore.
  • A Chinese black coin turtle (Mauremys nigricans) at Missouri State University. (IUCN: Endangered)
  • Picture of a young robin, Turdus migratorius, from the home of wildlife rescuer in Lincoln, Nebraska.
  • Picture of an American bison (Bison bison) at the Oklahoma City Zoo.
  • 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.
  • Photo: Southwestern speckled rattlesnake (Crotalus mitchellii pyrrhus) at the LA Zoo.
  • A Moiese burbot (Lota lota) at the Kootenai Tribal Hatchery, Idaho.
  • Photo: A cape porcupine (Hystrix africaeaustralis) named Rollo at the John Ball Zoo.
  • Photo: A Namibian web-footed gecko (Pachydactylus vanzyli) from a private collection.
  • Photo: A female Canada spruce grouse (Falcipennis canadensis canace) at Grouse Park Waterfowl in Cascade, Idaho.
  • Photo: Forest giant pouched rat (Cricetomys emini) at the Plzen Zoo in the Czech Republic.
  • Photo: A predatory snail (Clea helena) at Aquarium Berlin.
  • Photo: A red junglefowl (Gallus gallus gallus) at Zoo Plzeň.
  • Photo: A Loja rocket frog (Hyloxalus elachyhistus) at Balsa de los Sapos.
  • Photo: A red finger gorgonian (Diodogorgia nodulifera) at the Butterfly Pavilion.
  • Photo: A female kelp goose (Chloephaga hybrida hybrida) at Lundi Farm in Verl, Germany.
  • An orchard bee (Lasioglossum sp.) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Madagascar spiny hopper frog (Scaphiophyrne pustulosa) from a private collection.
  • Photo: Arafura file snake (Acrochordus arafurae) at Lilydale High School in Australia.
  • A western ribbon snake (Thamnophis proximus proximus) from the Shawnee National Forest.
  • Photo: Critically endangered citron crested cockatoos (Cacatua sulphurea citrinocristata) at Jurong Bird Park.
  • A northern spring salamander (Gyrinophilus porphyriticus) from a private collection.
  • Picture of a federally threatened, Canada lynx (Lynx canadensis) named Yukon at the Cincinnati Zoo.
  • Picture of a black-headed munia (Lonchura malacca) from a private collection.
  • Photo: A Mueller's clawed frog (Xenopus muelleri) at the Sedgwick County Zoo in Wichita, Kansas.
  • A scorpion (Lurus duforeius) at the University of Porto in Portugal
  • Picture of kangaroo Island kangaroos (Macropus fuliginosus fuliginosus) at Healesville Sanctuary.
  • An Australian osprey (Pandion haliaetus cristatus) at Healesville Sanctuary.
  • A Southeast Asian water monitor (Varanus salvator macromaculatus) at the Columbus Zoo, Columbus, Ohio.
  • Picture of a desert night snake (Hypsiglena torquata) at Springs Preserve.
  • Picture of a federally endangered female Indian leopard, Panthera pardus fusca, at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • An egg-eating snake (Dasypeltis scabra scabra) at Zoo Atlanta.
  • Photo: Lowland leopard frog (Lithobates yavapaiensis) at the Arizona-Sonora Desert Museum.
  • A flathead mullet (Mugil cephalus).
  • A picture of a narrow-winged damselfly larva (family Coenagrionidae) at Ash Meadows National Wildlife Refuge near Pahrump, NV.
  • Picture of an endangered (IUCN) and federally endangered female Asiatic lion (Panthera leo persica) named Janki at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A bird perched on a Nikon D2X camera at a farm near Bennett, Nebraska.
  • Picture of an inshore lizardfish (Synodus foetens) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A fox squirrel, Sciurus niger.
  • Endangered (IUCN) and federally endangered aye-ayes (Daubentonia madagascariensis) at the Omaha Zoo.
  • Picture of a federally endangered white abalone (Haliotis sorenseni) at the REEF, at the University of California, Santa Barbara.
  • Photo: A tule elk (Cervus canadensis nannodes) at Tierpark Berlin.
  • Photo: Philippine tarsier (Tarsius syrichta syrichta) at Avilon Zoo. This animal has the second largest eyes in the world compared to brain size.
  • A picture of a night snake (Hypsiglena ochrorhyncha klauberi) at the Arizona-Sonora Desert Museum.
  • Picture of a male Mountain goat (Oreamnos americanus) at the Cheyenne Mountain Zoo.
  • Turkmenistan sand boa (Eryx miliaris miliaris) at the Wroclaw Zoo.
  • Picture of White Cloud Mountain minnow (Tanichthys albonubes) at the Tulsa Zoo.
  • Photo: A Chinese cobra (Naja atra) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • A Western harvest mouse, Reithrodontomys megalotis.
  • Photo: An America robin (Turdus migratorius nigrideus) at the Carolina Waterfowl Rescue.
  • Photo: False bombardier beetle (Galerita bicolor) at the Audubon Insectarium.
  • Photo: A female fishing spider (Dolomedes okefinokensis) from the Okefenokee Wildlife Refuge Boardwalk area in Folkston, GA .
  • Picture of a purple swamphen (Porphyrio porphyrio) at the Lowry Park Zoo in Tampa, Florida.
  • Picture of a superb lyrebird (Menura novaehollandiae) at Healesville Sanctuary.
  • Photo: A three striped night monkey (Aotus trivirgatus) at the Faunia zoo in Madrid, Spain.
  • Photo: An endangered Saker falcon (Falco cherrug) at Plzen Zoo in the Czech Republic.
  • Picture of a four-horned chameleon (Chamaeleo quadricornis quadricornis) at the Saint Louis Zoo.
  • Picture of a possibly extinct Bachman's warbler (Vermivora bachmanii) at Tall Timbers Research Station and Land Conservancy.
  • Photo: Black stag beetle (Dorcus titanus) at the Insectarium in New Orleans.
  • A western tanager (Piranga ludoviciana) at The Living Desert in Palm Desert, California.
  • Two Rowley's palm pit vipers (Bothriechis rowleyi) at the St. Louis Zoo, St. Louis, Missouri.
  • Picture of a federally endangered, American alligator (Alligator mississippiensis) at the Kansas City Zoo.
  • Blackside darter (Percina maculata) at the Minnesota Dept. of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: Tomato clownfish (Amphiprion frenatus) at the Oklahoma City Zoo.
  • Photo: A Mozambique ridged frog (Ptychadena mossambica) from Gorongosa National Park.
  • A doctorfish tang (Acanthurus chirurgus) at the Denver Zoo.
  • Picture of a red-browed finch (Neochmia temporalis) at the Healesville Sanctuary.
  • Photo: Barrier Reef anemonefish (Amphiprion akindynos) photographed at Downtown Aquarium in Denver, Colorado.
  • Photo: A blue breasted parrot, Pionus reichenowi, at Loro Parque Fundacion.
  • A western slimy salamander (Plethodon albagula) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Photo: A male Petter's chameleon (Furcifer petteri) from a private collection in St. Augustine, Florida.
  • Photo: Endangered white-naped mangabeys (Cercocebus lunulatus) at the Rome Zoo.
  • Photo: Smooth-fronted caiman (Paleosuchus trigonatus) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • Picture of a male dusky Canada goose, Branta canadensis occidentalis, at Sylvan Heights Bird Park.
  • An endangered (IUCN) Golfodulcean poison frog (Phyllobates vittatus) from a private collection.
  • Photo: A Merlin’s dwarf grey frog (Pseudhymenochirus merlini) at the Plzen Zoo in the Czech Republic.
  • Portrait of a Guttural toad (Bufo gutturalis) a species commonly found in Gorongosa National Park.
  • Picture of a vulnerable binturong (Arctictis binturong) at the Houston Zoo.
  • Photo: In an effort to raise awareness about the extinction crisis, Photo Ark images and video are displayed in Times Square, NYC.
  • Photo: Two true tomato frogs (Dyscophus antongilii) at Omaha’s Henry Doorly Zoo.
  • Picture of two Indian pygmy geese or Cotton Pygmy Geese (Nettapus coromandelianus) at the Houston Zoo.
  • Red-winged parrot (Aprosmictus erythropterus) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
  • Photo: A common bronzewing (Phaps chalcoptera) at Zoo Plzeň.
  • A tent tortoise (Psammobates tentorius verroxii) at the Fresno/Chaffee Zoo.
  • Photo: A Desmarest's hutia (Capromys pilorides) at the Faunia zoo in Madrid, Spain.
  • Photo: A Bolivian military macaw, Ara militaris boliviana, at Loro Parque Fundacion.
  • A prairie ringneck snake (Diadophis punctatus arnyi) from a private collection.
  • Wied's marmoset (aka Kuhlii's marmoset) (Callithrix kuhlii) at the Lincoln Childrens Zoo.
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