Joel Sartore Joel Sartore

National Geographic Photographer and Speaker


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

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Explore the Photo Ark

Search the 37,459-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 11,309 species in Photo Ark as of today
    Explore the Photo Ark Search the [photoark_count]-picture Photo Ark for an animal or species.
  • 25 years to document every species in human care
Photo: Captive gray wolf at the International Wolf Center in Ely, MN.

Gallery

In the Field

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

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

Gallery

The Photo Ark

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

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Gallery

Behind the Scenes

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

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  • Photo: A flame box crab (Calappa flammea) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: An orange-spotted tiger clearwing (Mechanitis polymnia) at the Butterfly Pavilion.
  • Boreal chorus frog (Pseudacris triseriata maculata) at the Omaha Zoo.
  • Photo: A leathery sea squirt (Styela plicata) at Gulf Specimen in Panacea, Florida.
  • Picture of a giant red hermit crab (Petrochirus diogenes) in a manmade glass shell at Gulf Specimen Marine Lab.
  • Photo: Dark fishing spider (Dolomedes tenebrosus) at the Audubon Insectarium.
  • Picture of a satin bowerbird (Ptilonorhynchus violaceus) at Healesville Sanctuary.
  • An African brush-tailed porcupine (Atherurus africanus) at the Omaha Zoo.
  • A yellow-naped Amazon parrot (Amazona auropalliata auropalliata) at the Sedgwick County Zoo.
  • Photo: An endangered Visayan tarictic hornbill (Penelopides panini panini) at Negros Forest Park.
  • A red fox (Vulpes vulpes).
  • Picture of a rainbow sea star (Orthasterias koehleri) at the Minnesota Zoo.
  • Photo: Plain parakeet, Brotogeris tirica, at Loro Parque Fundacion.
  • Photo: A high-casqued chameleon (Chamaeleo hoehneli) at the Houston Zoo.
  • Photo: A violet-crested or purple-crested turaco (Tauraco porphyreolophus porphyreolophus) from a private collection in Choussy, France.
  • Photo: A wonga pigeon (Leucosarcia melanoleuca) at the Houston Zoo.
  • A long-snouted cutin frog (Pristimantis appendiculatus) near Mindo, Ecuador.
  • Photo: A female blue-frosted banner (Catonephele numilia esite) in Gamboa, Panama.
  • Photo: Bolivian cavy (Galea monasteriensis) at the Plzen Zoo in the Czech Republic.
  • Photo: Atlantic cleaner shrimp (Lysmata grabhami) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Picture of a leafy seadragon (Phycodurus eques) at the Dallas World Aquarium.
  • A leafcutter bee (Megachile parallela) photographed at a studio in Lincoln, NE.
  • Photo: A male cabot tragopan (Tragopan caboti) at Pheasant Heaven.
  • Crowned iguana (Laemanctus serratus) from the Omaha Zoo.
  • Arizona black rattlesnake (Crotalus oreganus cerberus).
  • Picture of a Himalayan griffon vulture (Gyps himalayensis) at the Assam State Zoo cum Botanical Garden in Guwahati, Assam, India.
  • Photo: Elephant-eared chameleon (Calumma brevicornis) near Lemuria Land, Madagascar.
  • Photo: A Dybowski's twinspot (Euschistospiza dybowskii) at the Zoo Berlin.
  • Photo: A short-eared owl (Asio flammeus suinda) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a flag rockfish (Sebastes rubrivinctus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A porcupine crab (Paralomis hystrix) at SeaWorld San Diego.
  • A western massasauga (Sistrurus tergeminus tergeminus) at Reptile Gardens.
  • Oyapok morph of a dyeing poison frog (Dendrobates tinctorius) from a private collection.
  • Photo: Western reef-egret (Egretta gularis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: An endangered Goodfellow's tree-kangaroo (Dendrolagus goodfellowi) at the Melbourne Zoo.
  • A small-mouthed salamander (Ambystoma texanum) from a private collection.
  • Photo: A critically endangered Philippine eagle (Pithecophaga jefferyi) at the Philippine Eagle Center.
  • Photo: A federally endangered fine-rayed pigtoe (Fusconaia cuneolus) taken from the Clinch River near Sneedville.
  • Photo: A jackdaw (Corvus monedula spermologus) at Hessilhead Wildlife Rescue.
  • Picture of an endangered rowi kiwi or okarito kiwi (Apteryx rowi) at the West Coast Wildlife Centre in Franz Josef Glacier, New Zealand.
  • Photo: An apple murex (Chicoreus pomum) at the Audubon Aquarium of the Americas.
  • Photo: A red leg hermit crab (Clibanarius digueti) at the Butterfly Pavilion.
  • Photo: An Indian muntjac (Muntiacus muntjak) at the Sedgwick County Zoo in Wichita, Kansas.
  • The eye of a pied mossy frog (Theloderma corticale) at the Houston Zoo.
  • Photo: A slender mongoose (Galerella sanguinea) at the Plzen Zoo.
  • Photo: Deer-horn stag beetle (Hexarthrius deyrollei) at the Insectarium in New Orleans.
  • Photo: Endangered Nile lechwe (Kobus megaceros) at the Dallas Zoo.
  • Picture of a Sonoran spotted whiptail lizard (Aspidoscelis sonorae) at Omaha's Henry Doorly Zoo.
  • Picture of a male, federally endangered turquoise parrot (Neophema pulchella) at Healesville Sanctuary.
  • Picture of Harley, a vulnerable red-billed toucan (Ramphastos tucanus) at Alabama Gulf Coast Zoo.
  • Photo: South American giant grasshopper (Tropidacris collaris) at the Budapest Zoo.
  • Photo: Walking stick (Datamas mouhotii) at the Budapest Zoo.
  • Photo: A ribbon moray eel (Rhinomuraena quaesita) at Petra Aqua.
  • Picture of a rare Black-footed tree rat (Mesembriomys gouldii) named Pandy at the Taronga Zoo in Sydney, Australia.
  • An endangered male northern yellow-cheeked gibbon (Nomascus annamensis) at the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam. The animal’s name is ‘Bin’.
  • A North American beaver (Castor canadensis) at Nebraska Wildlife Rehab.
  • Photo: A Jonah crab (Cancer borealis) at the Maine State Aquarium in West Boothbay, ME.
  • Two chestnut-bellied sandgrouse (Pterocles exustus exustus) at Safari Park Dvur Kralove. The female has more black markings.
  • Picture of a yellow-billed duck (Anas undulata) at the Sylvan Heights Bird Park.
  • Festive Amazon (Amazona bodini) at Parque Jaime Duque near Bogota, Colombia.
  • 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 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.
  • A Mexican burrowing python (Loxocemus bicolor) at the Sedgwick County Zoo in Wichita, Kansas.
  • A sky-blue poison frog (Hyloxalus azureiventris) from a private collection.
  • A wild caught orangethroat darter (Etheostoma spectabile) in Missouri.
  • A Reeve's pheasant (Syrmaticus reevesii) from the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a Hawaiian short-eared owl (Asio flammeus sandwichensis) at the LA Zoo.
  • Picture of an Aleutian cackling goose, Branta hutchinsii leucopareia, at Sylvan Heights Bird Park.
  • Picture of a nautilus (Nautilus pompilius) at the Monterey Bay Aquarium.
  • Picture of a Texas diamondback terrapin (Malaclemys terrapin littoralis) at the Houston Zoo.
  • A greenhouse frog (Eleutherodactylus planirostris) at the Tulsa Zoo.
  • A rough-scaled death adder (Acanthophis rugosus) at the Omaha Zoo.
  • Picture of a female yellowthroat (Geothlypis trichas ignota) at Tall Timbers Research Station and Land Conservancy.
  • Photo: A margined leatherwing (Chauliognathus marginatus) photographed at Spring Creek Prairie Audubon Center near Denton, NE. This animal was originally collected from Bobcat Prairie near Denton, NE
  • Photo: An Andean silverspot (Dione glycera) at Museo d’Orbigny.
  • Endangered Golden lion tamarins (Leontopithecus rosalia) at the Lincoln Children's Zoo.
  • Picture of an Arizona black tailed rattlesnake (Crotalus molossus) at Reptile Gardens. This snake is venomous.
  • A Dekay's brownsnake (Storeria dekayi texana) collected from Nebraska.
  • Usambara golden starburst, or Usambara orange baboon, tarantula (Pterinochilus murinus) at the Great plains Zoo.
  • Green toad (Anaxyrus debilis) at the Arizona-Sonora Desert Museum.
  • Photo: A rock gunnel (Pholis gunnellus) at the Maine State Aquarium in West Boothbay, ME.
  • Mallard (Anas platyrhynchos) ducklings.
  • Photo: A desert king snake (Lampropeltis getula splendida) from a private collection.
  • Picture of a green-cheeked conure (Pyrrhura molinae hypoxantha) at a private collection.
  • Photo: A vase coral (Montipora capricornis) at the Akron Zoo.
  • Photo: An adult female Common Marmoset (Callithrix jacchus) named Liilu and her three-month old baby named Marshmallow at the University of Nebraska, Omaha.
  • Photo: A blunt face shiner (Cyprinella camura) at the Oklahoma City Zoo.
  • Photo: An unidentified damselfly at Cedar Point Biological Station.
  • Photo: A rufous-collared sparrow (Zonotrichia capensis subtorquata) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Picture of a deathstalker scorpion (Leiurus quinquestriatus) at the Houston Zoo.
  • Picture of a pair of masked lapwings (Vanellus miles miles) at the Columbus Zoo.
  • Picture of a European pond turtle (Emys orbicularis) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Picture of a federally endangered jaguar, Panthera onca, at the Omaha Henry Doorly Zoo.
  • Photo: A male sparkling gourami (Trichopsis pumila) from a private collection.
  • Photo: A juvenile giant fringe-limbed treefrog (Ecnomiohyla fimbrimembra) at Zoo Atlanta.
  • Photo: A Turkestan rock agama, Paralaudakia lehmanni, at the Plzen Zoo.
  • Photo: A rusty-tipped page (Siproeta epaphus) at the Omaha Zoo.
  • Picture of a red-tailed hawk (Buteo jamaicensis) at the Denver Zoo.
  • Picture of a silver-haired bat (Lasionycteris noctivagans) at the Wildlife Rehabilitation Center of Northern Utah.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Photo: A Pampas cat or colocolo (Leopardus colocolo braccatus) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a lesser snow goose (Chen caerulescens caerulescens).
  • Photo: An unknown species of sea star at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A Parastenophis betsileanus from a private collection.
  • Photo: Oriental turtle doves (Streptopelia orientalis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: Barred parakeet, Bolborhynchus lineola, at Loro Parque Fundacion.
  • Photo: A Sunda laughingthrush (Garrulax palliatus) at Taman Mini Indonesia Indah.
  • Photo: Brown color phase of a female Usambara three-horned chameleon (Trioceros deremensis) from a private collection.
  • A tiger-striped catfish (Brachyplatystoma tigrinum) at the Dallas World Aquarium.
  • Picture of a wattled jacana (Jacana jacana) at the Dallas World Aquarium.
  • Photo: Striped dottyback (Pseudochromis sankeyi) at Pure Aquariums.
  • Photo: Sea goldie (Pseudanthias squamipinnis) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Photo: A Coho salmon, Oncorhynchus kisutch, at A Rocha Brooksdale Environmental Center in Surrey, BC. This species is federally endangered.
  • 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: A yellow periwinkle (Littorina obtusata) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of a serval (Leptailurus serval) at the Denver zoo.
  • Photo: A close up of a chain pickerel (Esox niger) at the Fish Biodiversity Lab at Auburn University.
  • Photo: California halibut (Paralichthys californicus) at East Bay Regional Park District.
  • Uno, a federally endangered Florida panther (Puma concolor coryi) at the Naples Zoo. A gunshot wound caused Uno to go blind in 2014.
  • A giant jumping stick (Stiphra sp.) at the St. Louis Zoo's Monsanto Insectarium.
  • Photo: An European squirrel (Sciurus vulgaris alpinus) at the Wildlife Rescue Center of Rome (LIPU).
  • An albino Eastern grey kangaroo (Macropus giganteus) at the Columbus Zoo.
  • Picture of a silvery mole rat (Heliophobius argenteocinereus) at the Plzen Zoo in the Czech Republic.
  • Photo: Splitfin flashlight fish (Anomalops katoptron) at the Dallas Children's Aquarium.
  • A Carolina wolf spider (Hogna carolinensis) at the Fort Worth Zoo.
  • A musk ox (Ovibos moschatus moschatus) at the University of Alaska in Fairbanks, AK.
  • Picture of Leonardo, an endangered, 8 1/2 week-old Bengal tiger cub (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Picture of Speke's hingback tortoises (Kinixys spekii) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A giant West African snail (Archachatina marginata ovum) at Aquarium Berlin.
  • Photo: Moluccan king parrot, Alisterus amboinensis buruensis, at Loro Parque Fundacion.
  • Photo: Sambar deer (Cervus unicolar) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A highly-endangered blue-throated macaw (Ara gluacogularis) at the Sedgwick County Zoo in Wichita.
  • Photo: A male and a female walking stick (Dares philippinensis) at the Budapest Zoo.
  • Picture of a male Guianan cock-of-the-rock (Rupicola rupicola) at the Dallas World Aquarium.
  • Photo: A female bronze-tailed peacock-pheasant (Polyplectron chalcurum chalcurum) at a private collection.
  • Photo: A Karoo toad, Vandijkophrynus gariepensis, at Prague Zoo. This species is common in its native South Africa and plays an important role within the eco-system.
  • Photo: Gaboon forest frog (Scotobleps gabonicus) near Manjo, Cameroon.
  • Rubber boa (Charina bottae) at the Tulsa Zoo.
  • The federally endangered Iowa Pleistocene Snail (Discus macclintocki). This is a relict from the last ice age, some 400,000 years ago. It lives in cold air vents on 37 different hillsides in Iowa (and one in Illinois) and survives only in the cold air that blows past underground ice and out of the cracks in limestone cliffs.
  • Photo: Massive starlet coral (Siderastrea siderea) at Mote Tropical Research Laboratory.
  • Photo: A pair of house finch (Haemorhous mexicanus frontalis) at Rogers Wildlife Rehabilitation in Hutchins, TX. The male has a red breast.
  • Photo: An azure-winged magpie (Cyanopica cyanus) at the University of Nebraska-Lincoln.
  • Photo: A common or eastern great horned owl (Bubo virginianus virginianus) named Halsey from a private collection.
  • Photo: A yellow mud turtle, (Kinosternon flavescens) at the Sedgwick County Zoo.
  • Picture of a female purple martin (Progne subis) from WildCare in Noble, Oklahoma.
  • Photo: A female Elephant beetle (Megasoma elephas elephas) at the Houston Zoo.
  • A metallic green bee (Agapostemon virescens), which along with other bee species is a locally important pollinator of field crops.
  • Photo: A Cuban tree frog (Osteopilus septenrionalis) at Fish and Stuff pet store in Yankton.
  • Photo: A vulnerable banded palm civet (Hemigalus derbyanus) named Yala at the Cincinnati Zoo. Yala means "go" in Arabic, the keepers said, which is appropriate because this creature moved like greased lighting.
  • A white grunt (Haemulon plumierii) at Gulf Specimen Marine Lab.
  • 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.
  • An endangered (IUCN) and federally endangered Cuvier's gazelle (Gazella cuvieri) named Francois at The Living Desert in Palm Desert, California.
  • Photo: Diademed amazon, Amazona diadema, at Loro Parque Fundacion.
  • A pigeon guillemot (Cepphus columba columba) at the Cincinnati Zoo.
  • A studio portrait of an American goldfinch (Spinus tristis pallidus) in Nebraska.
  • Photo: Two Duck River dartersnapper (Epioblasma ahlstedti) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL.
  • Hadada or Hadeda Ibis (Bostrychia hagedash brevirostris) at the Henry Doorly Zoo and Aquarium.
  • Photo: Marsh frog (Pelophylax ridibundus) at the Plzen Zoo in the Czech Republic.
  • Photo: A female critically endangered helmeted honeyeater (Meliphaga melanops cassidix) at the Healesville Sanctuary.
  • Picture of a common olivewing (Nessaea aglaura) at the Saint Louis Zoo.
  • Picture of a black swallowtail butterfly (Papilio polyxenes).
  • Budgett's frog (Lepidobatrachus laevis) at the Baltimore Aquarium.
  • Photo: A female Asian koel (Eudynamys scolopaceus scolopaceus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Picture of a male critically endangered Asian narrow-headed softshell turtle (Chitra chitra) at the Saint Louis Zoo.
  • Photo: Two smew (Mergus albellus) at the Houston Zoo.
  • Picture of a baby red kangaroo (Macropus rufus) at Rolling Hills Wildlife Adventure near Salina, Kansas.
  • Photo: Giant thorn crickets (Trachyaretaon carmelae) from the Plzen Zoo in the Czech Republic.
  • A Calabar python (Calabaria reinhardtii) at the Columbus Zoo, Columbus, Ohio.
  • Photo: Paradox vole (Microtus paradoxus) at the A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Science.
  • Photo: A San Joaquin kit fox (Vulpes macrotis mutica) at the Big Bear Alpine Zoo. This animal is named "Kit Kat”. This species is federally endangered.
  • A slug caught from the wild.
  • An owl butterfly (Caligo memnon) at the Insectarium in New Orleans, Louisiana.
  • A prairie vole, Microtus ochrogaster.
  • Photo: A Flame-breasted fruit dove (Ramphiculus marchei) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • Photo: A yellow-headed Amazon parrot (Amazona oratrix oratrix) at the Kansas City Zoo.
  • Grey-headed fish-eagle (Icthyophaga ichthyaetus) at ACCB in Siem Reap, Cambodia.
  • Photo: Least flycatcher (Empidonax minimus) at the Wildlife Rehab Center of Minnesota.
  • A federally endangered timber wolf (Canis lupus) named Kenai at the New York State Zoo.
  • Picture of bonnet macaques (Macaca radiata) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • The Palos Verdes blue butterfly, now thought extinct (Glaucopsyche lygdamus palosverdesensis). 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: Short tailed parrot, Graydidascalus brachyurus, at Loro Parque Fundacion.
  • Picture of a leucistic juvenile Virginia opossum (Didelphis virginiana) at the Wildlife Center of Silicon Valley.
  • An endangered Asian brown tortoise or Burmese mountain tortoise (Manouria emys emys) at the Audubon Zoo in New Orleans, Louisiana.
  • Photo: A Southern tamandua (Tamandua tetradactyla tetradactyla) at Fundacao Jardim Zoologico de Brasilia.
  • A common emerald dove or green-winged dove (Chalcophaps indica indica) from the Gladys Porter Zoo in Brownsville, Texas.
  • A Guthega skink (Liopholis guthega) at the Healesville Sanctuary.
  • Picture of a four-eyed fish (Anableps anableps) at the Oklahoma City Zoo.
  • Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.
  • Photo: Eastern casquehead iguana, Laemanctus longipes, at the Plzen Zoo.
  • Photo: Western meadowlark (Sturnella neglecta) at Milford Nature Center.
  • Photo: Blue backed parrot (Tanygnathus sumatranus sumatranus) at Loro Parque Fundacion.
  • A black-tailed prairie dog (Cynomys ludovicianus) at Zoo Atlanta.
  • Photo: A unidentified northern caddisfly (Limnephilus sp.) in a protective case it made out of leaves to hide itself in a stream, collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Davis, West Virginia.
  • Photo: A red cracker butterfly (Hamadryas amphinome) at the Audubon Insectarium, part of the Audubon Nature Institute.
  • Picture of a Eurasian teal (Anas crecca crecca) at the Sylvan Heights Bird Park.
  • Photo: Epaulette shark (Hemiscyllium ocellatum) at the Dallas Children's Aquarium.
  • Photo: An acacia rat (Thallomys loringi) at the Prague Zoo.
  • Photo: A western pygmy rattlesnake (Sistrurus miliarius streckeri) at the Pontotoc Ridge Preserve near Connerville, OK.
  • Photo: A great-tailed grackle (Quiscalus mexicanus) egg from a collection at the University of Nebraska State Museum, Lincoln, Nebraska.
  • Photo: Asiatic toad (Bufo gargarizans) at the Moscow Zoo.
  • Picture of a diablito, also known as a little devil poison frog (Oophaga sylvatica) Bilsa, Ecuador locality, from a private collection.
  • Photo: A juvenile Trinidad olive tarantula (Neoholothele incei) at the Moscow Zoo.
  • Photo: A spotted dove (Streptopelia chinensis tigrina) at the Plzen Zoo.
  • Photo: A Manaus slender-legged tree frog (Osteocephalus taurinus) from the wild in Manaus, Brazil.
  • Photo: Victoria forest tree frog (Leptopelis boulengeri) from Bioko Island, Equatorial Guinea.
  • Von der Decken's hornbill (Tockus deckeni) at Tampa's Lowry Park Zoo. The male has an orange beak, while the female has a black beak.
  • African clawed frog (Xenopus laevis borealis) at the Great Plains Zoo in Sioux Falls, SD.
  • An endangered Rio Chingual Valley treefrog (Hyloscirtus pantostictus) at Pontificia Universidad Católica del Ecuador.
  • Photo: An endangered hatchling green sea turtle (Chelonia mydas) at Riverbanks Zoo and Garden.
  • A Moapa River snail (Pyrgulopsis sp.) at Warm Springs Natural Area, Upper Muddy River, NE Clark County, Nevada.
  • Photo: A Hermann's tortoise (Testudo hermanni boettgeri) at Parco Natura Viva in Bussolengo, Italy..
  • A federally endangered Florida panther (Puma concolor coryi) named Lucy at Tampa's Lowry Park Zoo.
  • A black-faced ibis (Theristicus melanopis) at the Cincinnati Zoo.
  • A vulnerable black and rufous elephant shrew (Rhynchocyon petersi) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • A rough-skinned newt (Taricha granulosa) at the Oregon Zoo.
  • A bush thick-knee (Burhinus grallarius) at the Sedgwick County Zoo.
  • Photo: Smooth green snake (Liochlorophis vernalis) collected in Virginia.
  • Photo: An unidentified ground beetle (Carabidea family) at the Museo d'Orbigny Natural History Museum in Cochabamba, Bolivia.
  • Photo: Red winged parrot (Aprosmictus erythropterus coccineopterus) at Loro Parque Fundacion.
  • A Colombian four-eyed frog (Pleurodema brachyops) at the Vancouver Aquarium.
  • Red-bellied short-necked turtle (Emydura subglobosa) at the Lincoln Children's Zoo.
  • Picture of a Gulf Coast water dog (Necturus beyeri) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.
  • Picture of a silver-beaked Tanager, Ramphocelus carbo, at the Omaha Zoo.
  • Photo: A black striped skink (Amphiglossus macrocercus) at the Plzen Zoo.
  • Picture of an endangered Burmese black tortoise (Manouria emys phayrei) at the Riverbanks Zoo.
  • Photo: A long-eared owl (Asio otus otus) at Wildwood Trust near Canterbury, England.
  • Photo: An unidentified Caribbean sea whip (Plexaura sp.) at the Akron Zoo.
  • An eastern coachwhip (Masticophis flagellum flagellum) from a private collection.
  • Photo: A scorpion (Buthacus leptochelys) at the University of Porto in Portugal
  • Eyed anole (Anolis oculatus winstonorum) at Wroclaw Zoo.
  • Photo: Sun beetles (Pachnoda savigny), at Parco Natura Viva in Bussolengo, Italy.
  • Picture of a truncate coralfish (Chelmonops truncatus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Picture of a chain catshark (Scyliorhinus retifer) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: Chaco owl (Strix chacoensis) at Monticello Center in Italy.
  • Picture of a mantis shrimp (Odontodactylus scyllarus) at the Monterey Bay Aquarium.
  • A Gould's monitor lizard (Varanus gouldii) at Omaha's Henry Doorly Zoo.
  • A yellow-shafted flicker (Colaptes auratus luteus) at Nebraska Wildlife Rehab, Inc.
  • Photo: Pahu, the Bornean rhinoceros (Dicerorhinus sumatrensis harrissoni) at the Sumatran Rhino Rescue Center in Indonesia.
  • Oblong-winged katydids (Amblycorypha oblongifolia) at the Insectarium in New Orleans. These color variants are found in nature, though anything but green is usually eaten by predators immediately. The Insectarium has been a leader in breeding these color variants for display in the zoo community.
  • Photo: Western meadowlark (Sturnella neglecta) at Milford Nature Center.
  • Picture of a Guianan cock-of-the-rock (Rupicola rupicola) at the Dallas World Aquarium.
  • Smooth-sided toad (Rhaebo guttatus) at the National Aquarium in Baltimore.
  • A vulnerable black and rufous elephant shrew (Rhynchocyon petersi) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Picture of a flightless steamer duck, Tachyeres pteneres, at Sylvan Heights Bird Park.
  • Photo: A banded rock rattlesnake (Crotalus klauberi) at Reptile Gardens.
  • Photo: A whip scorpion (Typopeltis sp.) from Thailand, at the Moscow Zoo
  • Photo: An American crocodile (Crocodilus acutus) at the Omaha Zoo.
  • Photo: Red flanked lorikeet (Charmosyna placentis placentis) at Loro Parque Fundacion.
  • Photo: Giant water bug (Lethocerus medius) at the Bugarium at the Albuquerque BioPark.
  • A Choctawhatchee beach mouse (Peromyscus polionotus allophrys) a federally endangered rodent, at the USFWS office in Panama City, FL. This and several other beach mice subspecies are imperiled due to beach development.
  • Photo: A hawfinch (Coccothraustes coccothraustes coccothraustes) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: Male Vietnamese prickly stick insect (Neohirasea maerens) at Wroclaw Zoo.
  • Photo: An endangered two-year old pileated Gibbon (Hylobates pileatus) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Hartlaub's turaco (Tauraco hartlaubi) at the Houston Zoo.
  • Picture of a vulnerable binturong (Arctictis binturong) at the Houston Zoo.
  • A critically endangered black and white ruffed lemur (Varecia variegata) at the Lincoln Children's Zoo.
  • Indian blue peafowl (Pavo cristatus) at the Lincoln Children's Zoo.
  • Photo: Viperine snake (Natrix maura) at Wroclaw Zoo.
  • Mexican lance-headed rattlesnake (Crotalus polystictus) at the St. Louis Zoo.
  • Photo: A Fort Randolph robber frog (Pristimantis gaigei) at the Atlanta Botanical Garden.
  • Picture of Rajah, an endangered, male white Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Picture of a Florida waterdog (Necturus lodingi) from a private collection.
  • Picture of a many-banded aracari (Pteroglossus pluricinctus) at the Dallas World Aquarium.
  • Picture of a Mossy leaf-tailed gecko (Uroplatus sikorae) at the Omaha Zoo.
  • Photo: An Eastern redbelly turtle (Pseudemys rubriventris) at the Estuarium in Dauphin Island, AL.
  • Photo: Blesbok (Damaliscus pygargus phillipsi) at Plzen Zoo in the Czech Republic.
  • A northern green frog (Rana clamitans melanota) near Watertown, NY.
  • Photo: An Asiatic black bear (Ursus thibetanus) the Assam State Zoo cum Botanical Garden in Guwahati, Assam, India.
  • Picture of a Pacific black duck (Anas superciliosa) at Sylvan Heights Bird Park.
  • A crawfish from Bioko Island, Equatorial Guinea.
  • Photo: Northern prairie lizard (Sceloporus consobrinus) collected in Cherry County, Nebraska.
  • Photo: Grey trapdoor spider (Cyphonisia sp.) at Butterfly Pavilion in Westminster, Colorado.
  • Photo: Red bamboo snake (Oreocryptophis porphyraceus pulchra) from a private collection.
  • A Southern two-striped walkingstick (Anisomorpha buprestoides) at the Fort Worth Zoo.
  • Photo: Porkfish (Anisotremus virginicus) at Ripley's Aquarium of Canada.
  • An endangered Caucasus viper (Vipera kaznakovi) at the St. Louis Zoo.
  • Photo: An undescribed Tylomelania species orange at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: San Diego alligator lizard (Elgaria multicarinata webbii) at the Arizona-Sonora Desert Museum.
  • Photo: A vulnerable red eared guenon (Cercopithecus erythrotis) at Limbe Wildlife Center, a rescue and rehab center for wildlife in Limbe, Cameroon.
  • Photo: Northern Plains ratsnake (Pantherophis emoryi) collected in Thayer County, Nebraska.
  • Photo: An African thick-toed gecko (Pachydactylus rugosus) from a private collection.
  • Yellow-lined poison dart frog (Dendrobates truncatus). The photo was taken at the National Aquarium in Baltimore.
  • Mississippi green water snake (Nerodia cyclopion) at the Estuarium in Dauphin Island, AL.
  • Photo: Particoloured flying squirrel (Hylopetes alboniger) at the Moscow Zoo.
  • Photo: Gray hypocolius (Hypocolius ampelinus) from the private collection in Choussy, France
  • Photo: A field mouse.
  • Photo: An unidentified case-building caddisfly larvae in the family Limnephilidae, aquatic invertebrate from Mores Creek near Idaho City, Idaho.
  • Imitating or mimic poison dart frog (Ranitameya imitator) at the Baltimore Aquarium. This animal is a descendant of the few remaining animals in El Cope National Park in Panama, where the chytrid fungus may wipe out the animal at any time.
  • Picture of a Sonoran spotted whiptail lizard (Aspidoscelis sonorae) at Omaha's Henry Doorly Zoo.
  • Photo: A stick insect (Orthomeria kangi) at the University of the Philippines.
  • Picture of a warty sea cucumber (Parastichopus parvimensis) at the Monterey Bay Aquarium.
  • A pied crow (Corvus albus) at Ocean Park in Hong Kong.
  • Photo: An endangered Vaillant's Mabuya, Chioninia vaillantii, at the Plzen Zoo.
  • Photo: Slender sea robin (Prionotus scitulus) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A tiger longwing (Heliconius ismenius) at the Butterfly Pavilion.
  • Photo: A desert blond tarantula (Aphonopelma chalcodes) at the Kansas City Zoo.
  • Photo: Mabu the giant armadillo (Priodontes maximus) at Zoo Brasilia.
  • Photo: Common Indian monitor lizard (Varanus bengalensis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • A rodent native to the cloud forest.
  • A largescale stoneroller (Campostoma oligolepis).
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • An aboreal alligator lizard (Abronia graminea) at the San Antonio Zoo. (IUCN: Endangered)
  • A yellow-vented bulbul (Pycnonotus goiavier) at the Columbus Zoo.
  • Smooth-sided toad (Rhaebo guttatus) at the National Aquarium in Baltimore.
  • Picture of a plumed whistling duck, Dendrocygna eytoni, at the Blank Park Zoo in Des Moines, Iowa.
  • Photo: Banded peacock or fatima (Anartia fatima) in Gamboa, Panama.
  • Photo: A spotted python (Anaterisia maculosus) at the Lowry Park Zoo.
  • Photo: Australian-spotted jellyfish (Phyllorhiza punctata) at Loro Parque.
  • A red shiner (Cyprinella lutrensis).
  • Picture of marsh periwinkle (Littoraria irrorata) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • A White's tree frog (Pelodryas caerulea) at the Rolling Hills Wildlife Adventure.
  • An endangered baby Bornean orangutan (Pongo pygmaeus) named Aurora, with her adoptive mother, Cheyenne, a Bornean/Sumatran cross (Pongo pygmaeus x abelii) at the Houston Zoo.
  • Photo: A Clark's grebe (Aechmophorus clarkii) at the International Bird Rescue Center in San Pedro, CA.
  • A largescale stoneroller (Campostoma oligolepis).
  • Picture of an endangered Panay cloudrunner (Crateromys heaneyi) at the Plzen Zoo in the Czech Republic.
  • Photo: Cusk eel (Ophidion welshi) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Red sided garter snake (Thamnophis sirtalis infernalis) at the Exmoor Zoo.
  • Photo: An Asian vine snake (Ahaetulla prasina praeocularis) at the Avilon Zoo.
  • Photo: A buffy fish owl (Ketupa ketupu aagaardi) at the Prague Zoo.
  • A federally endangered woodland caribou (Rangifer tarandus caribou).
  • A vulnerable (IUCN) Tarahumara leopard frog (Lithobates tarahumarae) at the Arizona-Sonora Desert Museum.
  • Photo: A spotted night adder or forrest night adder (Causus maculatus) at the Sedgwick County Zoo in Wichita, Kansas.
  • A brown-throated conure (Eupsittula pertinax aeruginosa) at the National Aviary of Colombia.
  • Photo: A near threatened Himalayan tahr (Hemitragus jemlahicus) at the Rome Zoo.
  • Delalande's gecko (Tarentola delalandii) at Wroclaw Zoo.
  • Photo: A male Delacour's crested fireback (Lophura ignita macartneyi) from a private collection.
  • Photo: Pearly parakeet (Pyrrhura lepida lepida) at the private collection.
  • Photo: A pair of Soemmerring’s copper pheasants (Syrmaticus soemmerringii soemmerringii) from a private collection.
  • Photo: Shortfinger crayfish, Cambarus brachydactylus, at West Liberty University in West Liberty, WV. This specimen is from Montgomery Bell State Park, TN.
  • Picture of a blue-crowned motmot (Momotus momota) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Photo: Macaya dusky frog (Eleutherodactylus ventrilineatus) at the Philadelphia Zoo. This species is found in Haiti and is critically endangered.
  • Picture of a Sora rail (Porzana carolina) at Sylvan Heights Bird Park.
  • Photo: Brown-eyed Susan, a production black hen chicken.
  • Photo: Arizona green June beetles (Cotinis mutabilis) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • A North American beaver (Castor canadensis).
  • Picture of a male and female mallard (Anas platyrhynchos) at Northwest Trek Wildlife Park in Eatonville, Washington.
  • Photo: A striped Raphael catfish (Platydoras armatulus) at the Fish Biodiversity Lab at Auburn University.
  • A mourning dove (Zenaida macroura) at the Brown Ranch, Texas.
  • Photo: An unidentified caterpillar from the wild in Cameroon.
  • Golden redhorse (Moxostoma erythrurum) at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • Picture of a Malagasy turtle dove (Streptopelia picturata picturata) at the Plzen Zoo in the Czech Republic.
  • A little golden-mantled flying fox (Pteropus pumilus) at the Omaha Zoo.
  • Photo: A male Sumba hornbill (Rhyticeros everetti) at Bali Bird Park in Bali, Indonesia.
  • Photo: Spanner barb (Barbodes lateristriga) at Zoo Negara.
  • Picture of a short-billed dowitcher (Limnodromus griseus) at the Monterey Bay Aquarium.
  • Photo: A female Eurasian badger (Meles meles) at Centro Fauna Selvatica "Il Pettirosso".
  • Picture of a Northern diamondback terrapin (Malaclemys terrapin terrapin) at the Palm Beach Zoo.
  • Photo: Carpenter ant (Camponotus pennsylvanicus) at the Audubon Insectarium.
  • Photo: Smooth green snake (Liochlorophis vernalis) collected in Virginia.
  • Blue-headed tree agama (Acanthocercus atricollis) from the Omaha Zoo.
  • Photo: A predaceous diving beetle (Cybister fimbriolatus) at Gulf Specimen Aquarium in Panacea, FL.
  • Picture of a Southern blue devil (Paraplesiops meleagris) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: An endangered bluemask darter (Etheostoma akatulo) at Conservation Fisheries.
  • Photo: A coosa darter (Etheostoma coosae) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Walnut Creek in Chilton County, AL.
  • A critically endangered black and white ruffed lemur (Varecia variegata) at the Lincoln Children's Zoo.
  • A Southern ridge-nosed rattlesnake (Crotalus willardi meridionalis).
  • Picture of a Chilean teal (Anas flavirostris flavirostris) at the John Ball Zoo in Grand Rapids, Michigan.
  • Photo: Savage's thin-toed frog (Leptodactylus savagei) at the El Valle Amphibian Conservation Center (EVACC).
  • Photo: Subadult northern pig-tailed macaque (Macaca leonina) at ACCB in Siem Reap, Cambodia.
  • Picture of a South-American comb duck (Sarkidiornis melanotos sylvicola) at Sylvan Heights Bird Park.
  • A red salamander (Pseudotriton ruber) at Zoo Atlanta, Atlanta, Georgia.
  • A golden eagle (Aquila chrysaetos candensis) at Tracy Aviary.
  • Miami blue butterfly (Cyclargus thomasi bethunebakeri). This species is being captive bred at the McGuire Center at the Univ. of Florida. Thousands have been released into the wild in South Florida over the past three years. So far, results are indeterminate. Fewer than 250 exist in the wild, making it one of the rarest butterflies in North America.
  • Photo: Greenback cutthroat trout (Oncorhynchus clarki stomais) photographed at Downtown Aquarium in Denver, Colorado.
  • A beaver (Castor canadensis) tail.
  • Picture of a diablito, also known as a little devil poison frog (Oophaga sylvatica) El Pangan, Colombia locality, from a private collection.
  • Photo: An endangered mountainous star coral (Orbicella faveolata) at Riverbanks Zoo and Garden.
  • Baracoa giant anole (Anolis baracoae) at the Urban Ark Conservation
  • Photo: Red legged millipede (Spirobolida sp.) at Lilydale High School in Australia.
  • Photo: A female Montezuma swordtail (Xiphophorus montezumae) at L'aquarium tropical du palais de la Porte DorŽe.
  • Picture of a female plumed whistling duck (Dendrocygna eytoni) at Sylvan Heights Bird Park.
  • Angel Island chuckwalla also known as a spiny chuckwalla (Sauromalus hispidus) at the Houston Zoo.
  • Photo: An ambiguous crayfish (Cambarus striatus cf) at the Fish Biodiversity Lab at Auburn University.
  • Picture of a brush bronzewing (Phaps elegans) at the Healesville Sanctuary.
  • Malaysian dark-sided chorus frog (Microhyla heymonsi heymonsi) from a private collection.
  • Boreal chorus frog (Pseudacris triseriata maculata) at the Omaha Zoo.
  • Picture of a greater flamingo (Phoenicopterus roseus) named Pauly, age 15, at the LA Zoo.
  • Photo: A Common ringtail possum (Pseudocheirus peregrinus) at the Taronga Zoo in Sydney, Australia.
  • Photo: Arizona green June beetles (Cotinis mutabilis) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • Photo: Brown caiman (Caiman crocodilus fuscus) at Lisbon Zoo.
  • Photo: A Western spotted dove (Streptopelia suratensis) at the Plzen Zoo in the Czech Republic.
  • Photo: A five month old Tammar wallaby (Macropus eugenii) named Billy at Moonlit Sanctuary.
  • Photo: An European free-tailed bat (Tadarida teniotis) at the Wildlife Rescue Center of Rome (LIPU).
  • An endangered (IUCN) and federally endangered female Galapagos tortoise (Chelonoidis vicina) at the Gladys Porter Zoo in Brownsville, Texas.
  • An eastern American toad (Bufo americanus americanus) found in Watertown, NY.
  • Green frog (Rana clamitans) at the Toledo Zoo.
  • Critically endangered (IUCN) and federally endangered oyster mussels (Epioblasma capsaeformis). These mussels and many others are in danger of extinction because of habitat loss due to impoundments and pollution. Pollution from coal mining in the Clinch River watershed is of special concern. The fine sedimentation that comes downstream from the mines is thought to impede mussel survival.
  • Photo: A big-headed turtle (Platysternon megacephalum shiui) from Asia at the Sedgwick County Zoo.
  • Photo: A Goodman's mouse lemur (Microcebus lehilahytsara) at the Plzen Zoo in the Czech Republic.
  • Juvenile golden redhorse (Moxostoma erythrurum) at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • A satanic leaf-tailed gecko (Uroplatus phantasticus) at the Houston Zoo, Houston, Texas. (IUCN: Vulnerable)
  • Picture of a banded pitviper (Trimeresurus fasciatus) at the Dallas Zoo.
  • A muscovy duck named Joelle (Cairina moschata moschata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: Giant thorn cricket (Trachyaretaon carmelae) at the Budapest Zoo.
  • Photo: A red vented bulbul (Pycnonotus cafer) at the Plzen Zoo in the Czech Republic.
  • A vulnerable Mexican caecilian (Dermophis mexicanus) at the Tennessee Aquarium.
  • Picture of a Peninsula cooter (Pseudemys peninsularis) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: An Etruscan shrew (Suncus etruscus) at the Prague Zoo.
  • Photo: A Percival’s legless skink (Acontias percivali) at Prague Zoo. This species lives underground in Tanzania, but it full range remains undetermined.
  • Picture of fire shrimp also known as blood shrimp or scarlet cleaner shrimp(Lysmata debelius) at Nebraska Aquatic Supply.
  • A critically endangered Utila iguana (Ctenosaura bakeri) at the Miller Park Zoo.
  • Picture of a male and a female Northern pintail (Anas acuta) at the Sylvan Heights Bird Park.
  • Photo: Elm sawfly (Cimbex americana) at the Trinity Western University.
  • Picture of a bateleur eagle (Terathopius ecaudatus) at the LA Zoo.
  • A Common chuckwalla, Sauromalus ater, at the Plzen Zoo.
  • Photo: A Pacific common seal, Phoca vitulina richardsi, at the Blank Park Zoo in Des Moinses, Iowa.
  • Photo: Saddled bichir (Polypterus Endlicheri) at the Moscow Zoo.
  • Photo: River carpsucker (Carpiodes carpio) collected from the Rio Grande River near Albuquerque, New Mexico.
  • Picture of a humpback turretfish (Tetrasomus gibbosus) at Pure Aquariums.
  • Picture of an ornate tetra or candy cane tetra (Hyphessobrycon bentosi) at Pure Aquariums.
  • Photo: An Eastern mole (Scalopus aquaticus) at Nebraska Wildlife Rehab, Inc.
  • Photo: Field cricket (Gryllus assimilis) at Wroclaw Zoo.
  • Photo: A chestnut-naped imperial pigeon (Ducula aenea paulina) at the Prague Zoo.
  • European fire salamander (Salamandra salamandra bernardezi) at the St. Louis Zoo.
  • Photo: An olinguito (Bassaricyon neblina) at Zoologico de Quito.
  • Photo: A grass porgy (Calamus arctifrons) at Gulf Specimen Aquarium in Panacea, FL.
  • Critically endangered (IUCN) and federally endangered Panamanian golden frogs (Atelopus zeteki) in amplexus (in which the male rides the female prior to breeding) at Riverbanks Zoo.
  • Photo: Cuban trogon (Priotelus temnurus) in Choussy, France.
  • A vulnerable southern bald Ibis (Geronticus calvus) at the Houston Zoo.
  • A gecko (Hemidactylus fasciatus) with a broken tail, which will grow back, from Bioko Island, Equatorial Guinea.
  • Picture of an opossum (Didelphis virginiana) with babies.
  • Photo: Cuckoo wasp (Chrysis sp.) at the Audubon Insectarium.
  • A pair of Guinea baboons (Papio papio) at the Indianapolis Zoo.
  • Picture of a western Atlantic harbor or common seal (Phoca vitulina concolor) at the Buttonwood Park Zoo in New Bedford, Massachusetts.
  • A critically endangered (IUCN) and federally endangered Cuban crocodile (Crocodylus rhombifer).
  • Photo: A red squirrel (Sciurus vulgaris) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: Walking stick (Carausius detractus) at the Budapest Zoo.
  • Photo: A Philippine forest roundleaf bat (Hipposideros obscurus) at the University of the Philippines.
  • An Ozark zigzag salamander (Plethodon angusticlavius) at Missouri State University, Springfield, Missouri.
  • Photo: A common green darner larvae (Anax junius) at a pond near Valparaiso, Nebraska.
  • Photo: Montezuma's quail (Cyrtonyx montezumae) at the San Antonio Zoo. The male has the black and white head.
  • Picture of a red-tailed hawk (Buteo jamaicensis jamaicensis) at Parque Zoologico Nacional, the zoo in Santo Domingo, Dominican Republic.
  • Photo: A Roborovski hamster (Phodopus roborovskii) at the Berlin Zoo.
  • Green and black poison dart frog, Panama morph (Dendrobates auratus) from a private collection.
  • Picture of a black vulture (Coragyps atratus) at the Sutton Avian Research Center.
  • Photo: Large fig parrot (Psittaculirostris desmarestii occidentalis) at Loro Parque Fundacion.
  • Photo: Pyrrhura molinae restricta from the town of Honnecourt Sur Escault, France.
  • Photo: A spoonbill paddlefish (Polyodon spathula) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK. This species is listed at vulnerable on the IUCN Red List.
  • Photo: A female giant Pacific octopus (Enteroctopus dofleini) at the Alaska SeaLife Center in Seward, AK.
  • An orchard bee (Lasioglossum sp.) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Black-bellied whistling ducks (Dendrocygna autumnalis autumnalis) at the Brevard Zoo.
  • Picture of a South American Comb Duck (Sarkidiornis melanotos sylvicola) at the Houston Zoo.
  • A flying fox fish (Epalzeorhynchos kalopterus) at Conservation Fisheries in Knoxville, Tennessee.
  • A large flying fox (Pteropus vampyrus), also known as the Greater Flying Fox or Malaysian Flying Fox at the Columbus Zoo.
  • Photo: A fishfly larva (Chauliodes pectinicornis) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected near Davis, West Virginia
  • Picture of a reticulate gila monster (Heloderma suspectum suspectum) at the Lincoln Children's Zoo.
  • Photo: A green snake (Philodryas olfersii olfersii) at Fundacao Jardim Zoologico de Brasilia.
  • 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.
  • A North American river otter (Lontra canadensis) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: A Santa Cecilia cochran frog (Teratohyla midas) at Balsa de los Sapos.
  • Picture of a vulnerable Fly River turtle (Carettochelys insculpta) from a private collection.
  • Photo: A Jordan's casque-headed tree frog or bone-headed tree frog (Trachycephalus jordani) at SeaWorld San Diego.
  • Photo: Tail of a red tailed amazon, Amazona brasiliensis, at Loro Parque Fundacion.
  • Photo: Female Baw Baw frog (Philoria frosti) at the Melbourne Zoo. This frog critically-endangered.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • A northern flying squirrel (Glaucomys sabrinus) (three months old, male) at Wildlife Images, a rehabilitation center near Merlin, OR.
  • A black crake (Zapornia flavirostra) at the Columbus Zoo.
  • Photo: A striped owl (Asio clamator midas) at BioParque do Rio.
  • Picture of a green heron (Butorides virescens) at the Saint Louis Zoo.
  • Photo: A male Defassa waterbuck (Kobus ellipsiprymnus defassa) at Parco Natura Viva in Bussolengo, Italy.
  • A blue-crowned hanging parrot (Loriculus galgulus) at the Fort Wayne Children's Zoo.
  • Picture of a Bri Bri morph of a strawberry poison frog (Oophaga pumilio) from a private collection.
  • Photo: A juvenile monkey face eel (Cebidichthys violaceus) at East Bay Regional Park District.
  • Photo: A painted bronzeback (Dendrelaphis pictus) at the Plzen Zoo in the Czech Republic.
  • A meadow vole (Microtus pennsylvanicus pennsylvanicus) from Watertown, New York.
  • Photo: Elliot's laughingthrush (Trochalopteron elliotii) in Choussy, France.
  • A juvenile Wagler's temple viper (Trimeresurus wagleri) at the Fort Worth Zoo.
  • Photo: A year-old milky eagle owl at Tracy Aviary.
  • Picture of a white-lipped mud turtle (Kinosternon leucostomum) at the Cali Zoo in Colombia.
  • Photo: A Rhode Island red domestic chicken (Gallus gallus domesticus) in Lincoln, Nebraska.
  • Photo: A vulnerable red eared guenon (Cercopithecus erythrotis) at Limbe Wildlife Center, a rescue and rehab center for wildlife in Limbe, Cameroon.
  • A Florida scrub lizard (Sceloporus woodi) from Cape Canaveral Florida.
  • A Rio Fuertes beaded lizard (Heloderma horridum exasperatum) at Zoo Atlanta.
  • Picture of a Northern diamondback terrapin (Malaclemys terrapin terrapin) at the Palm Beach Zoo.
  • Picture of a Eurasian spoonbill (Platalea leucorodia) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Picture of a black-headed siskin (Spinus notatus) from a private collection.
  • Chiricahua leopard frog (Lithobates chiricahuensis), a vulnerable (IUCN) and federally threatened species, at the Phoenix Zoo.
  • Photo: A male Chihuahua fairy shrimp (Streptocephalus mackini) at Cedar Point Biological Station.
  • Photo: A pair of Vulturine guineafowl, Acryllium vulturinum.
  • Picture of a vulnerable Southern ground hornbill (Bucorvus leadbeateri) from Parc des Oiseaux.
  • Photo: Two rufous-bellied niltava (Niltava sundara) from a private collection in Choussy, France.
  • Photo: Black cactus longhorn beetle (Moneilema armatum) at the Woodland Park Zoo.
  • Picture of a flat-clawed hermit crab (Pagurus pollicaris) at Gulf Specimen Marine Lab and Aquarium.
  • A leafcutter bee (Megachile parallela) photographed at a studio in Lincoln, NE.
  • Photo: A mountain peacock-pheasant, Polyplectron inopinatum, at the Blank Park Zoo in Des Moines, Iowa.
  • Photo: Virgin River speckled dace (Rhinichthys osculus) at the Loveland Living Planet Aquarium in Draper, UT.
  • Photo: Trinidad dwarf tiger (Cyriocosmus elegans) at the Moscow Zoo.
  • A Chinese black coin turtle (Mauremys nigricans) at Missouri State University. (IUCN: Endangered)
  • Picture of a Lord Derby's parakeet (Psittacula derbiana) at the Wellington Zoo.
  • Photo: Bolivian dwarf beauty tarantula (Cyriocosmus perezmilesi) at Butterfly Pavilion in Westminster, Colorado.
  • Photo: A white eared brown dove (Phapitreron leucotis) at the Plzen Zoo in the Czech Republic.
  • A female, vulnerable African elephant (Loxodonta africana) at the Cheyenne Mountain Zoo.
  • A juvenile Brazilian porcupine named "Piglet" (Coendou prehensilis) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • Two Russian dwarf hamsters (Phodopus sungorus) from the Gladys Porter Zoo in Brownsville, Texas.
  • A Gulf Coast toad (Incilius valliceps) at the San Antonio Zoo.
  • Photo: Nymph of a largeheaded grasshopper (Phoetaliotes nebrascensis) at Cedar Point Biological Station.
  • Photo: A giant bent-toed gecko (Cyrtodactylus irianjayensis) at a private collection.
  • Photo: Lordhowensis acan coral (Micromussa lordhowensis) at Butterfly Pavilion.
  • Photo: A unidentified planorbid snail (Planorbidae sp.) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Picture of dwarf hermit crabs (Pagurus longicarpus) at Gulf Specimen Marine Lab and Aquarium.
  • Picture of a Blue-crowned motmot (Momotus momota) at Tracy Aviary.
  • Photo: A riffle minnow (Phenacobius catostomus) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Cahaba River, Perry County, AL.
  • Juvenile mink (Neovison vison).
  • An Eastern gray kangaroo (Macropus giganteus).
  • Photo: A javan sparrowhawk (Accipiter trivirgatus javanicus) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Photo: A a pair of endangered gray gibbons (Hylobates muelleri muelleri) at the Miller Park Zoo.
  • Picture of a Northern Luzon cloud rat (Phloeomys pallidus) at the Plzen Zoo in the Czech Republic.
  • Photo: A male ruby-crowned kinglet (Regulus calendula calendula) at the Akron Zoo.
  • Picture of a banded huntsman spider (Holconia immanis) at the Taronga Zoo.
  • A ruin lizard (Podarcis sicula) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A masked flying fox (Pteropus personatus) at a private collection in Jakarta, Indonesia.
  • Picture of a critically endangered narrow-headed softshell turtle (Chitra chitra) at the St. Louis Zoo.
  • Photo: A Andaman day gecko (Phelsuma andamanense) at the Plzen Zoo in the Czech Republic.
  • Photo: A metallic pigeon (Columba vitiensis griseogularis) at the Plzen Zoo in the Czech Republic.
  • Picture of a male black-naped fruit dove (Ptilinopus melanospila) at the Oklahoma City Zoo.
  • A Jamaican iguana (Cyclura collei) from the Sedgwick County Zoo. This is one of the most critically endangered lizards in the world. Listed as critically endangered (IUCN) and federally endangered.
  • Photo: Eastern gravel chub (Erimystax x-punctatus trautmani) collected from Big Darby Creek near Circleville, OH.
  • A vulnerable Arabian oryx (Oryx leucoryx) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A black-bellied plover or grey plover (Pluvialis squatarola), in winter plumage, at the Marathon Wild Bird Center in Marathon, Florida.
  • Photo: Red winged parrot (Aprosmictus erythropterus coccineopterus) at Loro Parque Fundacion.
  • Photo: A Brazilian black tarantula (Grammostola pulchra) at the Kansas City Zoo.
  • Photo: Greater adujutant stork (Leptoptilos dubius) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A rainbow smelt (Osmerus mordax) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of a critically endangered, female Pirre harlequin frog (Atelopus glyphus,) at the Panama Amphibian Rescue and Conservation Project.
  • Photo: A Lower Keys marsh rabbit, Sylvilagus palustris hefneri, from the wild.
  • Photo: A giant monkey frog (Phyllomedusa bicolor) at Omaha's Henry Doorly Zoo.
  • Photo: Columbian tegu lizard (Tupinambis teguixin) at Seattle Reptiles.
  • A portrait of a two-toed amphiuma (Amphiuma means).
  • Photo: A black piranha (Serrasalmus rhombeus) at Shark Reef Aquarium at Mandalay Bay, Las Vegas, NV.
  • Picture of a Baltimore oriole (Icterus galbula) at the Columbus Zoo.
  • Photo: A laughing dove (Stigmatopelia senegalensis) at Jurong Bird Park, of Wildlife Reserves Singapore.
  • Guinean bichir (Polypterus ansorgii) at the Moscow Zoo.
  • Photo: A little bittern, Ixobrychus minutus, at the Plzen Zoo.
  • Photo: A parrot cichlid (Hoplarchus psittacus) at the Denver Zoo.
  • A big brown bat (Eptesicus fuscus fuscus) at Nebraska Wildlife Rehab.
  • Dunes sagebrush lizard (Sceloporus arenicolus) at the Albuquerque BioPark Aquarium.
  • Photo: A bantam sunfish (Lepomis symmetricus) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • Picture of a Western gull (Larus occidentalis) at the Santa Barbara Wildlife Care Network.
  • A Mandarin emperor newt (Tylototriton shanjing) at the Cheyenne Mountain Zoo.
  • Picture of a vulnerable kea (Nestor notabilis) at the Wellington Zoo.
  • A federally threatened Cuban iguana (Cyclura nubila nubila) at the San Diego Zoo.
  • Photo: A regal sea fan (Lophogorgia hebes) at Gulf Specimen Aquarium in Panacea, FL.
  • Photo: (Kryptopterus lais) at Zoo Negara.
  • A pigeon guillemot (Cepphus columba columba) at the Cincinnati Zoo.
  • Photo: Walking stick (Screptophasma langkawicense) at the Budapest Zoo.
  • Photo: Black-chinned yuhina (Yuhina nigrimenta) in Choussy, France.
  • Photo: Federally endangered Short's goldenrod (Solidago shortii), at the Missouri Botanical Garden.
  • Photo: A monacled cobra (Naga kauthia) at Reptile Gardens.
  • Photo: Fire-tuffed barbet (Psilopogon pyrolophus) in Arona, Tenerife, Spain.
  • Photo: A bull snake, Pituophis catenifer sayi, at the Sedgwick County Zoo.
  • Photo: A Florida barred owl (Strix varia georgica) at the Jacksonville Zoo and Gardens, Jacksonville, Florida.
  • 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.
  • Photo: An endangered mountain tapir (Tapirus pinchaque) at the LA Zoo.
  • An land leech (Haemadipsa zeylanica agilis) at Cuc Phuong National Park, Vietnam.
  • Photo: Mozart’s frog (Eleutherodactylus Amadeus) at the Philadelphia Zoo. This species is found in Haiti and is critically endangered.
  • A green salamander (Aneides aeneus) at the Toledo Zoo, Toledo, Ohio. (IUCN: Near Threatened)
  • Photo: A endangered (IUCN) American eel (Anguilla rostrata) at the Minnesota Dept. of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: Marajo amazon, Amazona ochrocephala xantholaema, at Loro Parque Fundacion.
  • Photo: Two true tomato frogs (Dyscophus antongilii) at Omaha’s Henry Doorly Zoo.
  • A male painted bunting (Passerina ciris) at the Brown Ranch in Texas. (IUCN: Near Threatened)
  • Madagascar glass frog (Boophis luteus) from a private collection.
  • Picture of an endangered white-tailed black cockatoo (Calyptorhynchus baudinii) at the Lowry Park Zoo.
  • Photo: A female striped fishing spider (Dolomedes scriptus) from the University of Nebraska-Lincoln.
  • The tail end of a Southern ridge-nosed rattlesnake (Crotalus willardi meridionalis).
  • Picture of a blue phase of the strawberry poison dart frog (Oophaga (Dendrobates) pumilio) at the National Aquarium in Baltimore.
  • A West African gaboon viper (Bitis gabonica rhinoceros) at Zoo Atlanta.
  • A female North American porcupine (Erethizon dorsatum bruneri) at the Great Plains Zoo.
  • Photo: Bluehead sucker (Catostomus discobolus) at Lake Mead Hatchery, Nevada.
  • A chocolate chip sea star, Protoreaster nodosus.
  • Photo: A Baluchistan gerbil (Gerbillus nanus) at the Plzen Zoo.
  • Picture of a scarlet kingsnake (Lampropeltis triangulum elapsoides) at the Knoxville Zoo.
  • Photo: A Tokay gecko (Gekko gecko) from a private collection.
  • Photo: Green keel-bellied lizard (Gastropholis prasina) at Urban Ark Conservation
  • Photo: A female, vulnerable red-crowned parakeet (Cyanoramphus novaezelandiae) named 'Gidget'.
  • An endangered polka-dot poison frog (Oophaga arborea) from a private collection.
  • Picture of a four-horned chameleon (Chamaeleo quadricornis quadricornis) at the Saint Louis Zoo.
  • Picture of a longspined porcupinefish also known as a freckled porcupinefish or Porcupine pufferfish (Diodon holocanthus) at the Nebraska Aquatic Supply.
  • Photo: A female plains killifish (Fundulus zebrinus) at Cedar Point Biological Station.
  • A Florida scrub lizard (Sceloporus woodi) from Cape Canaveral Florida.
  • A critically endangered diamond darter (Crystallaria cincotta) at Conservation Fisheries.
  • A federally endangered woodland caribou (Rangifer tarandus caribou).
  • A dwarf pencilfish (Nannostomus marginatus) at the Dallas World Aquarium.
  • Imitating or mimic poison dart frog (Ranitameya imitator) at the Baltimore Aquarium. This animal is a descendant of the few remaining animals in El Cope National Park in Panama, where the chytrid fungus may wipe out the animal at any time.
  • Picture of a male and female pin-tailed whydah (Vidua macroura) at Sylvan Heights Waterfowl Park.
  • A white-faced whistling duck (Dendrocygna viduata) at the Lincoln Children's Zoo.
  • A band-bellied owl (Pulsatrix melanota melanota) at Monticello Center in Italy.
  • Picture of a black scoter or American scoter (Melanitta americana) at Patuxent Wildlife Research Center.
  • A critically endangered (IUCN) and federally endangered addax (Addax nasomaculatus) at the Lee G. Simmons Conservation Park and Wildlife Safari near Ashland, Nebraska.
  • Photo: A cocoa thrush (Turdus fumigatus fumigatus) at Fundacao Jardim Zoologico de Brasilia.
  • The critically-endangered orange-bellied parrot (Neophema chrysogaster) at the Healesville Wildlife Sanctuary. This is one of the rarest birds in the world with fewer than 50 left in the wild.
  • Photo: A six-banded armadillo (Euphractus sexcinctus setosus) at BioParque do Rio.
  • Photo: A purple tree tarantula (Avicularia purpurea) at the Moscow Zoo.
  • Photo: Southern kingfish (Menticirrhus americanus) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Olivaceous cormorant (Phalacrocorax brasilianus or Phalacrocorax olivaceus) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Photo: A Vulcan Darwin tortoise (Geochelone niger microphyes) at the Omaha Zoo.
  • Photo: An otocinclus catfish (Macrotocinclus affinis) at the Singapore Zoo's River Safari area.
  • Photo: Taxidermy specimen of an ivory-billed woodpecker at the University of Nebraska State Museum.
  • Photo: Virilis fruit fly (Drosophila virilis) at the Cincinnati Zoo.
  • Photo: An endangered timneh parrot (Psittacus timneh) at the Jurong Bird Park.
  • A Japanese giant salamander (Andrias japonicus) at the San Antonio Zoo, San Antonio, Texas. (IUCN: Near Threatened)
  • Photo: A robust cone-headed katydid (Neoconocephalus robustus) at St. Louis Zoo.
  • A vulnerable (IUCN) greater prairie-chicken (Tympanuchus cupido.)
  • Picture of the back end of a critically endangered (IUCN) and federally endangered Eastern black rhino (Diceros bicornis michaeli) at the Oklahoma City Zoo.
  • Photo: Barcoo grunter (Scortum barcoo) at the Freshwater Ecology and Marine Biology Dept. at Templestowe College.
  • Photo: A walking leaf (Phyllium giganteum) at the Audubon Insectarium in New Orleans.
  • Photo: Spaghetti finger leather coral (Sinularia flexibilis) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Sonoran mountain kingsnake (Lampropeltis pyromelana) at the Arizona-Sonora Desert Museum.
  • Picture of a Cydno longwing (Heliconius cydno chioneus) at the Saint Louis Zoo.
  • An elm sphinx moth (Ceratomia amyntor) at Spring Creek Prairie near Denton, Nebraska.
  • Photo: A Meadow River Mudbug, Cambarus pauleyi, wild caught near West Liberty, West Virginia.
  • A sturgeon chub (Macrhybopsis gelida).
  • Photo: A black-lip pearl oyster (Pinctada margaritifera) on right and a white-lipped pearl oyster (Pinctada maxima) on left, at Semirara Marine Hatchery Laboratory in the Philippines.
  • Picture of a vulnerable Hispaniolan yellow tree frog (Osteopilus pulchrilineatus) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A Pluto's Prevost's squirrel (Callosciurus prevostii pluto) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Photo: Nilgai (Boselaphus tragocamelus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: Indian star tortoises (Geochelone elegans) at the Taronga Zoo.
  • Photo: Kimberly rock monitor (Varanus glauerti) at Wroclaw Zoo.
  • Western Blacknose dace (Rhinichthys obtusus) collected from Big Darby Creek near Circleville, OH.
  • An Angolan python (Python anchietae) at the Omaha Zoo.
  • Photo: A barred buttonquail (Turnix suscitator fasciatus) on Semirara Island in the Philippines.
  • A Swainson's hawk (Buteo swainsoni) at Raptor Recovery Nebraska.
  • Photo: A Madagascan blue pigeon (Alectroenas madagascariensis) at the Plzen Zoo in the Czech Republic.
  • Photo: Ratonel (Pseudoboa neuwiedii) at Piscilago Zoo in Bogota, Colombia.
  • A red milk snake (Lampropeltis triangulum syspila) from a private collection.
  • A federally endangered Mexican gray wolf (Canis lupus baileyi) at the Wild Canid Survival and Research Center.
  • Picture of a superb lyrebird (Menura novaehollandiae) at Healesville Sanctuary.
  • Juvenile mink (Neovison vison).
  • A tawny frogmouth (Podargus strigoides) at the Fort Worth Zoo.
  • Photo: Fighting conch (Strombus pugilis) at the Conservancy of Southwest Florida in Naples, Florida.
  • Photo: A Colorado chipmunk (Neotamias quadrivittatus) at Nebraska Wildlife Rehab.
  • Photo: Lane snapper (Lutjanus synagris) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A white-rumped shama (Kittacincla malabarica omissa) at Taman Mini Indonesia Indah.
  • Photo: A cactus ferruginous pygmy owl (Glaucidium brasilianum cactorum) at Wild at Heart raptor rehabilitation center.
  • Photo: A Florida softshell turtle (Trionyx ferox) at Reptile Gardens.
  • A Russian dwarf hamster (Phodopus sungorus) from the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a red-throated loon or red-throated diver (Gavia stellata) at Patuxent Wildlife Research Center.
  • An endangered alligator lizard (Abronia graminea) at the Sedgwick County Zoo.
  • Photo: Pacific seahorse (Hippocampus ingens) at the Dallas Children's Aquarium.
  • Picture of a male and a female rainbow stag beetle (Phalacrognathus muelleri) at the Houston Zoo.
  • Photo: A male wolf spider (Schizocosa communis) from the University of Nebraska-Lincoln.
  • Photo: A Augrabies flat lizard (Platysaurus broadleyi) at the Plzen Zoo in the Czech Republic.
  • Picture of a Dumeril's monitor (Varanus dumerilii) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • A carolina anole (Anolis carolinensis) from Cape Canaveral Florida.
  • Northern leopard frog (Lithobates (Rana) pipiens) at the Toledo Zoo.
  • A bontebok (Damaliscus pygargus dorcas) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of aRio Grande siren (Siren intermedia) at the San Antonio Zoo.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • Photo: Virgin River chub (Gila seminuda) at Warm Springs Natural Area, Upper Muddy River, NE Clark County, Nevada.
  • Photo: Redtail rasbora (Rasbora borapetensis) at Zoo Negara.
  • Photo: A critically endangered European mink (Mustela lutreola) at the Madrid Zoo.
  • Photo: Critically endangered Nubian flap-shelled turtle (Cyclanorbis elegans) at Wroclaw Zoo.
  • Picture of a Texas coral snake (Micrurus tener) with a color and pattern mutation at the Houston Zoo.
  • Picture of an endangered red panda (Ailurus fulgens fulgens) at the Lincoln Children's Zoo.
  • Photo: A boat-billed heron (Cochlearius cochlearius cochlearius) at the Prague Zoo.
  • A bog turtle (Glyptemys muhlenbergii) an endangered (IUCN) and federally threatened species at the Atlanta Zoo.
  • Photo: A juvenile black milk snake, Lampropeltis triangulum gaigeae, at the Crayfish lab in West Liberty University in West Liberty, WV.
  • Slackwater darter (Etheostoma boschungi), an endangered (IUCN) and federally threatened species, at Conservation Fisheries, a native stream fish breeding center.
  • A bush hyrax (Heterohyrax brucei brucei) at the Plzen Zoo in the Czech Republic.
  • Photo: Female six spotted fishing spider (Dolomedes triton) from the University of Nebraska-Lincoln.
  • Photo: Tonguetied minnow (Exoglossum laurae) collected from Big Darby Creek near Circleville, OH.
  • A western Mojave glossy snake (Arizona elegans candida) from a private collection.
  • A black-chinned hummingbird (Archilochus alexandri) at the Brown Ranch, Texas.
  • Photo: Cabot's tragopan (Tragopan caboti) at the St. Augustine Alligator Farm.
  • Photo: A juvenile boring clam (Tridacna crocea) at the Semirara Marine Hatchery Laboratory in the Philippines.
  • A bluegill (Lepomis macrochirus).
  • An Amazonian brown brocket deer (Mazama nemorivaga) at Parque Jaime Duque.
  • A federally-endangered snail kite (Rostrhamus sociabilis) at the Audubon Center for Birds of Prey, a rehab and education center.
  • A Desert Iguana (Dipsosaurus dorsalis) at the Buffalo Zoo.
  • Pipevine swallowtail (Battus philenor) a native to Nebraska, at the Lincoln Children's Zoo.
  • A great egret (Ardea alba) at the Caldwell Zoo in Tyler, Texas.
  • An endangered polka-dot poison frog (Oophaga arborea) from a private collection.
  • A boreal toad (Anaxyrus boreas boreas) at the Cheyenne Mountain Zoo.
  • Photo: Australian Darter (Anhinga novaehollandiae)
  • Photo: A unidentified mayfly larvae (Stenonema sp.) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Picture of a vulnerable male red-bellied lemur (Eulemur rubriventer) named 'Iroquiois' at the Duke Lemur Center.
  • Picture of Rani, an endangered female Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Photo: Northern prairie lizard (Sceloporus consobrinus) collected in Cherry County, Nebraska.
  • Photo: Splendid sunbird (Cinnyris coccinigastrus) at the Houston Zoo.
  • Banded water cobra (Naja annulata annulata) at the Albuquerque BioPark Aquarium.
  • A Houston toad (Anaxyrus houstonensis) at the San Antonio Zoo. (US: Endangered, IUCN: Endangered)
  • Picture of a female eastern towhee (Pipilo erythrophthalmus) at Tall Timbers Research Station and Land Conservancy.
  • Picture of an African dwarf mud turtle (Pelusios nanus) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Picture of common pochard ducks (Aythya ferina) at Sylvan Heights Bird Park.
  • Photo: Swallowtail seaperch (Anthias anthias) at Loro Parque.
  • Armenian viper (Montivipera raddei) at the St. Louis Zoo.
  • A meadow vole (Microtus pennsylvanicus pennsylvanicus) from Lincoln, Nebraska.
  • A Javan leopard cat (Prionailurus javanensis javanensis) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • An African clawed frog (Silurana tropicalis) from Bioko Island, Equatorial Guinea.
  • Photo: Two male saffron finches (Sicalis flaveola brasiliensis) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: A cape fox (Vulpes chama) at the Plzen Zoo,
  • Photo: An Asian box turtle (Cuora amboinensis couro) at Ragunan Zoo in Jakarta, Indonesia.
  • A yellow-legged gull (Larus michahellis michahellis) at the Wildlife Rescue Center of Rome (LIPU).
  • Photo: Frilled house gecko (Hemidactylus platyurus) at Crocolandia in the Philippines.
  • A vulnerable (IUCN) western pond turtle (Actinemys marmorata) at the Oregon Zoo.
  • Southern leopard frog ( Lithobates sphenocephalus ) at the Denver zoo.
  • Three-toed Box Turtle, Terrapene carolina triunguis, at the Sedgwick County Zoo.
  • An endangered (IUCN) and federally threatened yellow-blotched map turtle (Graptemys flavimaculata) at the Tennessee Aquarium.
  • Photo: Saddleback moth caterpillar (Acharia stimulea) at the Audubon Insectarium.
  • A buff-crested bustard (Lophotis gindiana) at the Columbus Zoo.
  • Picture of an eastern red bat, Lasiurus borealis.
  • Picture of a common bamboo viper (Trimeresurus elegans) at the Dallas Zoo.
  • Photo: Autumn leaf (Doleschallia bisaltide bisaltide) at Malacca Butterfly and Reptile Sanctuary.
  • A male Atlas beetle (Chalcosoma atlas) at the Omaha Henry Doorly Zoo, Omaha, Nebraska.
  • Photo: Roger's Racer (Platyceps rogersi) from a private collection.
  • Photo: A male Luzon rufous hornbill, Buceros hydrocorax, at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • Photo: A Jonah crab (Cancer borealis) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of a Ross's goose (Chen rossii).
  • Photo: California moray (Gymnothorax mordax) at East Bay Regional Park District.
  • Photo: A male Mishmi takin (Budorcas taxicolor) at the Prague Zoo. This species is listed as vulnerable on the IUCN Red List.
  • Solange, a federally endangered female pygmy rabbit (Brachylagus idahoensis). She was born in May of 2007. She is 81.5% Columbia Basin pygmy rabbit, and the rest is the Idaho race. Since there are no male Columbia Basin pygmy rabbits left, this means only animals intercrossed with the Idaho race will survive.
  • A male eastern bongo (Tragelaphus eurycerus isaaci) at the Great Plains Zoo.
  • Photo: Indian black turtle (Melanochelys trijuga) at the Singapore Zoo.
  • Photo: A crested serpent eagle (Spilornis cheela bido) from Java at at Taman Safari.
  • A Japanese giant salamander (Andrias japonicus) at the San Antonio Zoo, San Antonio, Texas. (IUCN: Near Threatened)
  • Photo: Eight-lined Wrasse (Pseudocheilinus octotaenia) from Pure Aquariums.
  • Centralian python (Morelia bredli) at the Omaha Zoo.
  • An Australian barn-owl (Tyto alba delicatula) at Healesville Sanctuary.
  • An endangered lappet-faced or Nubian vulture (Torgos tracheliotos) at Zoo Atlanta.
  • Photo: Betta pi at L'aquarium tropical du palais de la Porte DorŽe.
  • Critically endangered Roti Island snake-necked turtle (Chelodina mccordi) at the Toledo Zoo.
  • Photo: Eastern white pelican (Pelecanus onocrotalus) at the Sedgwick County Zoo.
  • Photo: An orange-billed thrush (Geokichla citrina melli) at the Prague Zoo.
  • Picture of the foot of a cat ba cave gecko (Goniurosaurus catbaensis) at the St. Louis Zoo.
  • Picture of a vulnerable hispaniolan amazon or parrot (Amazona ventralis) at the Knoxville Zoo in Knoxville, Tennessee.
  • Usambara golden starburst, or Usambara orange baboon, tarantula (Pterinochilus murinus) at the Great plains Zoo.
  • A giant walking stick (Phobaeticus serratipes) at the Omaha Henry Doorly Zoo, Omaha, Nebraska.
  • Photo: A bare-eyed cockatoo (Cacatua pastinator) at Reptile Gardens.
  • A great southern white butterfly (Ascia monuste) at the Lincoln Children's Zoo in Lincoln, Nebraska.
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • Photo: Lilacine Amazon (Amazona lilacina) from Le Parc des Oiseaux in Villars Les Dombes, France.
  • Photo: A bare-hearted glass frog (Hyalinobatrachium colymbiphyllum) at Zoo Atlanta.
  • Picture of a four-spotted flounder (Paralichthys oblongus) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A male Brazilian tanager (Ramphocelus bresilius dorsalis) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • A North American river otter (Lontra canadensis) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: A high-casqued chameleon (Chamaeleo hoehneli) at the Houston Zoo.
  • Photo: A tufted guineafowl (Numida meleagris mitratus) at PBZT, the Parc Botanique Et Zoologique de Tsimbazaza.
  • A Cope's treefrog (Hyla chrysoscelis) caught in the wild near Dunbar, Nebraska.
  • The hand of a blue spiny lizard (Sceloporus serrifer) at the Houston Zoo.
  • Photo: Black-tailed jackrabbit (Lepus californicus) at Cedar Point Biological Station.
  • A critically endangered (IUCN) and federally endangered Sumatran tiger (Panthera tigris sumatrae).
  • Picture of a purple-crowned lorikeet (Glossopsitta porphyrocephala) at Healesville Sanctuary.
  • An Arizona ridge-nosed rattlesnake (Crotalus willardi willardi) at the St. Louis Zoo.
  • 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.
  • Picture of a federally endangered Andean condor (Vultur gryphus) at the Lowry Park Zoo.
  • Photo: An Eastern Montpellier snake (Malpolon insignitus) at Prague Zoo.
  • Picture of a blue and yellow macaw (Ara ararauna) at Ocean Park in Hong Kong.
  • Photo: A female African openbill stork (Anastomus lamelligerus) at Tierpark Berlin.
  • A marsupial frog (Gastrotheca pseustes) at a captive breeding at Pontificia Universidad Catolica in Quito, Ecuador. (IUCN: EN)
  • Picture of a granite spiny lizard (Sceloporus orcutti) at the Santa Barbara Zoo.
  • Photo: An orange fronted fruit dove (Ptilinopus aurantiifrons) at the Plzen Zoo.
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