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 38,555-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 11,926 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: A ripple elimia (Elimia lecontiana) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Photo: Eastern kingsnake (Lampropeltis getula getula) at Lisbon Zoo.
  • Photo: Scarlet peacock butterfly (Anartia amathea) at Butterfly Pavilion.
  • A critically endangered female blue-billed curassow (Crax alberti) at the National Aviary of Colombia.
  • Photo: A female carpet chameleon (Furcifer lateralis) in Madagascar.
  • Photo: A critically endangered Chinese three-striped box turtle (Cuora trifasciata trifasciata) from a private collection.
  • Photo: Tokara habu pit viper (Protobothrops tokarensis) at the Saint Louis Zoo.
  • Photo: A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
  • Picture of Leonardo, an endangered, 8 1/2 week-old Bengal tiger cub (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Photo: New Mexico milksnake (Lampropeltis triangulum celaenops) at the Albuquerque BioPark Aquarium.
  • Photo: Mexican blindcat (Prietella phreatophila) at the Conservation Department of the San Antonio Zoo. This species is endangered on the IUCN Red List as well as on the US Federal list.
  • Photo: West African black turtle (Pelusios niger) at Wroclaw Zoo.
  • Picture of a male American wigeon (Anas americana) at Sylvan Heights Bird Park.
  • Picture of an Ord's kangaroo rat (Dipodomys ordii) at Cedar Point Biological Station.
  • Photo: A Palawan binturong (Arctictis binturong whitei) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • Photo: A pair of house finch (Haemorhous mexicanus frontalis) at Rogers Wildlife Rehabilitation in Hutchins, TX. The male has a red breast.
  • Photo: A speckled rattlesnake (Crotalus mitchelli pyhrrus) at Reptile Gardens.
  • Photo: Red squirrel (Tamiasciurus hudsonicus minnesota) at Bay Beach Wildlife Sanctuary
  • Photo: A critically endangered, female Walden's hornbill, Rhabdotorrhinus waldeni, at Talarak Foundation.
  • A Senegal parrot (Poicephalus senegalus) at the Sutton Avian Research Center.
  • Photo: Green filefish (Monacanthus ciliatus) at Pure Aquariums.
  • A black-throated monitor (Varanus albigularis ionidesi) at the Kansas City Zoo.
  • An endangered Malayan tiger (Panthera tigris jacksoni) at the Omaha Zoo.
  • Photo: Northern mole vole (Ellobius talpinus) at the Moscow Zoo.
  • A black crested mangabey (Lophocebus aterrimus) at the Chattanooga Zoo.
  • Picture of a federally endangered black caiman (Melanosuchus niger) at the St. Augustine Alligator Farm.
  • Photo: An Argentina giant black rump (Acanthoscurria sternalis) from a private collection.
  • Picture of a critically endangered Pondicherry vulture (Sarcogyps calvus) named Brahma at the Palm Beach Zoo. He's the only one in North America.
  • Photo: Caucasian salamander (Mertensiella caucasica) at the Moscow Zoo. This species is listed as Vulnerable according to IUCN.
  • Photo: An adult female worker European paper wasp (Polistes dominula) at Cedar Point Biological Station.
  • Picture of a little blue penguin (Eudyptula minor) at SPCA Bird Wing, a bird rehab center in Auckland, New Zealand.
  • Endangered African grey parrot (Psittacus erithacus erithacus) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
  • A male (left) and female brown-headed cowbird (Molothrus ater) at the San Antonio Zoo.
  • Picture of an Arizona tiger salamander (Ambystoma mavortium nebulosum) at the St. Louis Zoo in St. Louis, Missouri.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild)
  • Photo: A candy darter (Etheostoma osburni) at the Aquatic Resource Recovery Center at White Sulphur Springs National Fish Hatchery, West Virginia.
  • Photo: A common palm civet (Paradoxurus hermaphroditus) at the Assam State Zoo in Guwahati, Assam, India.
  • Picture of a blotched foxface (Siganus unimaculatus) at Nebraska Aquatic Supply.
  • A male Eurasian blackcap (Sylvia atricapilla) at the Environmental Education Center of the Ribeiras de Gaia.
  • An Indian rhinoceros (Rhinoceros unicornis) at the Rolling Hills Wildlife Adventure. (IUCN: Endangered)
  • Photo: A black-bellied slider (Trachemys dorbignyi dorbignyi) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a male redhead duck (Aythya americana) at the Sylvan Heights Bird Park.
  • Photo: Walking stick (Lonchodiodes jeloces) at the Moscow Zoo.
  • Photo: Goliath stick insect (Eurycnema goliath) at the Budapest Zoo.
  • Photo: A green finger sponge (Suberites aurantiacus) at Gulf Specimen in Panacea, Florida.
  • Photo: An eastern diamondback rattlesnake (Crotalus adamanteus) at Reptile Gardens.
  • An eastern fence lizard (Sceloporus consobrinus) collected in Cherry County, Nebraska.
  • Picture of a barred goby (Ptereleotris zebra) at Nebraska Aquatic Supply.
  • Picture of a male and female Maccoa duck (Oxyura maccoa) at Sylvan Heights Bird Park.
  • Picture of a purple gallinule (Porphyrio martinicus) at the Virginia Aquarium.
  • Photo: A liger, Panthera leo x Panthera tigris, at Taman Safari in Bogor, West Java, Indonesia.
  • Photo: Black vasa parrot (Coracopsis nigra libs) at Loro Parque Fundacion.
  • Photo: A Peregrine falcon (Falco peregrinus brookei) at the Wildlife Rescue Center of Rome (LIPU).
  • Photo: A yellow-spotted millipede, Harpaphe haydeniana, at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • A sayaca tanager (Thraupis sayaca sayaca) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: Red-spot assassin bug (Platymeris laevicollis) at the Bugarium at the Albuquerque BioPark.
  • An endangered (IUCN) Beal's four-eyed turtle (Sacalia bealei) at the Tennessee Aquarium.
  • Photo: An Alabama creekmussel (Pseudodontoideus connasaugaensis) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Picture of a black widow spider (Latrodectus mactans) at Reptile Gardens.
  • A variegated skink (Trachylepis variegata) from the Mt. Gorongosa in Mozambique, Africa.
  • Photo: A male yellow-breasted tit (Cyanistes flavipectus) from a private collection in St. Augustine, Florida.
  • Photo: Edward's fig parrot (Psittaculirostris edwardsii) at Loro Parque Fundacion.
  • Golden birdwing (Troides helena) at the McGuire Center at the Florida Museum of Natural History.
  • Photo: Omani spiny-tailed lizard (Uromastyx thomasi) at Wroclaw Zoo. This species is listed as vulnerable by the IUCN.
  • Picture of a common tree snake (Dendrelaphis punctulatus) at the Healesville Sanctuary.
  • Photo: Possibly a baby robin, from the home of wildlife rescuer in Lincoln, Nebraska.
  • Picture of a western blue tongue lizard (Tiliqua occipitalis) at Wild Life Sydney Zoo.
  • Photo: A male Cape eland (Taurotragus oryx oryx) at the Lisbon Zoo
  • Picture of a diablito, also known as a little devil poison frog (Oophaga sylvatica) Lita/Imbabura, Ecuador locality, from a private collection.
  • Photo: A black-banded owl (Ciccaba huhula huhula) at Mantenedor da Fauna Silvestre Cariuá.
  • Photo: A Madagascar tree boa (Sanzinia volontany) at Prague Zoo.
  • A federally endangered West African slender-snouted crocodile (Mecistops cataphractus) from the private collection of Curt Harbsmeier.
  • Photo: An African sharptooth catfish (Clarias gariepinus) at Davao Crocodile Park.
  • A millipede (Diplopoda sp.).
  • Photo: An upland burrowing crayfish (Cambarus dubius) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Vulnerable (IUCN) Oregon spotted frog (Rana pretiosa) at the Sunriver Nature Center in Deschutes County, OR.
  • Photo: A coleto (Sarcops calvus) at the Plzen Zoo in the Czech Republic.
  • Photo: Bronze featherback (Notopterus notopterus) at Zoo Negara.
  • Photo: A Sunda scops owl (Otus lempiji cnephaeus) at Jurong Bird Park.
  • Photo: Halmahera giant gecko, Gehyra vorax, at the Plzen Zoo.
  • Photo: A Serengeti topi (Damaliscus jimela), formerly known as Damaliscus lunatus jimela, at the San Antonio Zoo.
  • Picture of a Baltimore oriole (Icterus galbula) at the Columbus Zoo.
  • Photo: A vulnerable Spanish imperial eagle (Aquila adalberti) at the Madrid Zoo.
  • Photo: A Klappenbach's red-bellied frog (Melanophryniscus klappenbachi) at WWT Slimbridge in England.
  • A studio portrait of a blotched tiger salamander (Ambystoma mavortium melanostictum) from a private collection.
  • Two East African spiny-tailed lizard (Cordylus tropidosternum) at the Chattanooga Zoo.
  • Photo: Nubian goat at the Lincoln Children's Zoo.
  • Photo: A Mexican bluewing (Myscelia ethusa pattenia) at the Butterfly Pavilion.
  • Photo: A shanny (Lipophrys pholis) from the Lisbon area at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Picture of a lesser siren (Siren intermedia) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A swimming crab (Polybius henslowii) at the Littoral Station of Aguda, Portugal.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • A goldenrod crab spider (Misumena vatia) found at Spring Creek Prairie.
  • An endangered Malayan tiger, Panthera tigris jacksoni, at the Omaha Zoo.
  • Photo: Yellow mud turtle (Kinosternon flavescens) at Wildcare, a wildlife rehab center.
  • Photo: A silver carp (Hypophthalmichthys molitrix) at the Schramm Education Center near Gretna, NE.
  • A studio portrait of a vulnerable (IUCN) male lesser prairie-chicken (Tympanuchus pallidicinctus) that was caught to be radio collared.
  • Photo: A western burrowing owl (Athene cunicularia hypugaea) at Wild At Heart in AZ.
  • A harlequin frog (Atelopus sp.) near Limon, Ecuador.
  • Photo: European hamster (Cricetus cricetus) at the Moscow Zoo.
  • A male eastern tiger swallowtail butterfly (Papilio glaucus) from Lincoln, NE.
  • Photo: A female African hawk-eagle (Aquila spilogaster) at Zoopark Zajezd.
  • Photo: Two endangered Azuero parakeets (Pyrrhura picta eisenmanni) at Nispero Zoo.
  • Picture of an Eastern bearded dragon (Pogona barbata) at the Auckland Zoo.
  • A vulnerable Sonoyta mud turtle (Kinosternon sonoriense longifemorale) at the Phoenix Zoo.
  • A Mexican milksnake (Lampropeltis triangulum annulata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: Black Headed Grosbeak (Pheucticus melanocephalus) at the Wildlife Care Association
  • Photo: Leaf cutter ant (Acromyrmex ambiguous) at the Moscow Zoo.
  • Photo: A buff-tailed bumblebee (Bombus terrestris) at Fauna Andina, a conservation center near Villarrica, Chile.
  • Photo: A Colorado chipmunk (Neotamias quadrivittatus) at Nebraska Wildlife Rehab.
  • Photo: White bullhead (Ameiurus catus) at the Fish Conservation and Culture Lab in Byron, CA at UC Davis.
  • Photo: A yellow-rumped cacique (Cacicus cela cela) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: Pyne's ground plum or Guthrie's ground-plum (Astragalus bibullatus), a federally endangered plant that exists only in a one-mile-square area outside of Nashville within the 'cedar glades' ecosystem.
  • Photo: A mole salamander (Ambystoma talpoideum) from a private collection.
  • Photo: A female desert bighorn sheep (Ovis canadensis nelsoni) at the Arizona-Sonora Desert Museum in Tucson, AZ.
  • A vulnerable (IUCN) and federally endangered, nine-week-old clouded leopard cub (Neofelis nebulosa nebulosa) at the Columbus Zoo.
  • Photo: Black redstart (Phoenicurus ochruros) from the Budapest Zoo.
  • Crested auklets (Aethia cristatella) at the Cincinnati Zoo.
  • Photo: Adult Longfin smelt (Spirinchus thaleichthys) at the Fish Conservation and Culture Lab in Byron, CA at UC Davis.
  • An eastern fence lizard (Sceloporus consobrinus) collected in Cherry County, Nebraska.
  • Picture of Ouachita streambed salamanders (Eurycea subfluvicola).
  • A captive English/house sparrow (Passer domesticus) photographed at a studio in Lincoln, NE.
  • An African house snake (Lamprophis fuliginosus) at the Cleveland Metroparks Zoo.
  • Photo: A female Malabar parakeet, Psittacula columboides, at Loro Parque Fundacion.
  • Photo: Yazoo darters (Etheostoma raneyi) at Conservation Fisheries.
  • Photo: Common grass yellow (Eurema hecabe) at Melbourne Zoo.
  • Picture of a vulnerable (IUCN) and federally threatened Florida scrub jay (Aphelocoma coerulescens).
  • A federally endangered Karner blue butterfly (Lycaeides melissa samuelis) at the Toledo Zoological Gardens.
  • Photo: A southern fatmucket (Lampsilis straminea) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Photo: A Texas gartersnake (Thamnophis sirtalis annectens) at the Dallas Zoo.
  • Photo: Bender, a lesser Jardine's parrot (Poicephalus gulielmi fantiensis).
  • Photo: Broad River Stream crayfish, Cambarus lenati, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Broad River, NC.
  • Picture of a Gila monster (Heloderma suspectum) at Zoo Atlanta.
  • Picture of a crimson-backed tanager (Ramphocelus dimidiatus) at the National Aviary breeding center in Palmar, Colombia.
  • 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.
  • Nene geese (Branta sandvicensis) at the Great Plains Zoo, Sioux Falls, South Dakota. (IUCN: Vulnerable; US: Endangered)
  • Picture of a Eurasian spoonbill (Platalea leucorodia) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A bigeye shiner (Notropis boops) at the Pontotoc Ridge Preserve near Connerville, OK.
  • Endangered (IUCN) and federally endangered mountain yellow-legged frogs (Rana muscosa). Population locality: San Bernardino.
  • A hermit crab (Paguroidea sp.) on Bioko Island, Equatorial Guinea.
  • Picture of an endangered (IUCN) and federally endangered black-footed ferret (Mustela nigripes) at the Cheyenne Mountain Zoo.
  • Picture of a White-eared bulbul (Pycnonotus leucotis leucotis) at Sylvan Heights Bird Park.
  • Photo: Purple swamphen (Porphyrio porphyrio porphyrio) at Wroclaw Zoo.
  • Photo: An Atlantic surf clam (Spisula solidissima) at the Maine State Aquarium in West Boothbay, ME.
  • A stubfoot toad (Atelopus limon) infected with chytrid fungus at a lab in Quito, Ecuador. (IUCN: Critically Endangered)
  • An African gray climbing mouse (Dendromus melanotis) from the Mt. Gorongosa in Mozambique, Africa.
  • Photo: An African magpie (Pica mauritanica) at the Plzen Zoo in the Czech Republic.
  • Photo: A brown-belted bumblebee (Bombus griseocolis) photographed at Spring Creek Prairie Audubon Center near Denton, NE. This bee was originally collected from Bobcat Prairie near Denton, NE.
  • Photo: A Northern Pacific rattlesnake (Crotalus oreganus oreganus) at the American International Rattlesnake Museum in Albuquerque, NM.
  • A superb starling (Lamprotornis superbus) at the Omaha Henry Doorly Zoo, in Omaha, Nebraska.
  • Photo: Palawan binturong (Arctictis binturong whitei) at the Nashville Zoo.
  • Photo: Pygmy rock crab (Glebocarcinus oregonensis) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A Everett's scops owl (Otus everetti) at the Philippine Eagle Center.
  • Photo: Common carp (Cyprinus carpio) at the Fish Conservation and Culture Lab in Byron, CA at UC Davis.
  • A beautiful pit viper (Trimeresurus venustus) at the Woodland Park Zoo.
  • Photo: Rose-crowned parakeet (Pyrrhura rhodocephala) at a private collection.
  • A giant palm salamander (Bolitoglossa dofleini) at the Fort Worth Zoo.
  • A federally endangered Karner blue butterfly (Lycaeides melissa samuelis) at the Toledo Zoological Gardens.
  • Photo: The two color phases of the Amazon tree boa (Corallus hortulanus hortulanus) at the Jacksonville Zoo and Gardens, Jacksonville, Florida.
  • Picture of a Oophaga sylvatica, the "little devil poison frog" at a captive breeding facility at Pontificia Universidad Catolica in Quito, Ecuador.
  • Photo: An Amazon blue bloom tarantula (Xenesthis intermedia) from a private collection.
  • Photo: Gunnison's prairie dog (Cynomys gunnisoni) at Liberty Wildlife.
  • Ornate horned frog (Ceratophrys ornata) at the Tennessee Aquarium.
  • Photo: A Turkestan rock agama, Paralaudakia lehmanni, at the Plzen Zoo.
  • Photo: A male Egyptian desert cockroach (Polyphaga aegyptiaca) at Prague Zoo.
  • Photo: An adult, male golden-headed manakin (Pipra erythrocephala) at Dallas World Aquarium.
  • A screaming hairy armadillo (Chaetophractus vellerosus) at the Omaha Zoo.
  • A Malayan crestless fireback (Lophura erythrophthalma) at the Houston Zoo.
  • A Mexican hognose snake (Heterodon nasicus kennerlyi ) at the Gladys Porter Zoo in Brownsville, Texas.
  • A federally endangered snail kite (Rostrhamus sociabilis) at the Audubon Center for Birds of Prey, a rehab and education center.
  • Photo: Pacific sideband snail (Monadenia fidelis) at the Trinity Western University.
  • Photo: Carunculated caracara (Phalcoboenus carunculatus) at Parque Jaime Duque near Bogota, Colombia.
  • A pair of gentoo penguins (Pygoscelis papua papua).
  • Photo: A European polecat, Mustela putorius putorius, at Wildwood Trust near Canterbury, England.
  • Photo: Speckled cockroach (Nauphoeta cinerea) at the Budapest Zoo.
  • Picture of Australasian shovelers (Anas rhynchotis) at the Sylvan Heights Bird Park.
  • A red-mantled saddle-back tamarin (Saguinus lagonotus) at the Plzen Zoo in the Czech Republic.
  • Photo: Eurasian kingfisher (Alcedo atthis ispida) at Alpenzoo in Innsbruck, Austria.
  • Photo: A Santa Cecilia cochran frog (Teratohyla midas) at Balsa de los Sapos.
  • Photo: Blackside darter (Percina maculata) at the Minnesota Dept. of Natural Resources Center for Aquatic Mollusk Programs.
  • A common emerald dove or green-winged dove (Chalcophaps indica indica) from the Gladys Porter Zoo in Brownsville, Texas.
  • A meadow vole (Microtus pennsylvanicus pennsylvanicus) from Lincoln, Nebraska.
  • Picture of a Potto (Perodicticus potto) at the Cleveland Metroparks Zoo.
  • Picture of a vulnerable (IUCN) and federally endangered white-necked crow (Corvus leucognaphalus) at Parque Zoologico Nacional, the zoo in Santo Domingo, Dominican Republic.
  • Photo: Eastern mud turtle (Kinosternum subrubrum subrubrum) at Riverbanks Zoo.
  • Photo: Red-spotted newt (Notophtalmus viridescens), in a juvenile or 'eft' stage, at Zoo Atlanta.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • A Platte River caddisfly (Ironoquia plattensis) in its larval stage.
  • Photo: An antimena chameleon, Furcifer antimena, from a private collection.
  • A dusky pygmy rattlesnake (Sistrurus malarius barbouri) at Reptile Gardens.
  • Photo: A female Asian koel (Eudynamys scolopaceus scolopaceus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A scaly-naped amazon (Amazona mercenaria mercenaria) at Huachipa Zoo in Lima, Peru.
  • Photo: An endangered golden poison frog (Phyllobates terribilis), orange morph, from a private collection.
  • A splendid leaf frog (Cruziohyla sylviae) at the National Aquarium in Baltimore.
  • Photo: A female earwig (Diplatys flavicollis) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: An African chaffinch (Fringilla coelebs africana) at Zoo Plzeň.
  • Photo: A Lear's macaw, Anodorhynchus leari, at Loro Parque Fundacion.
  • A lake sturgeon (Acipenser fulvescens) at the Genoa National Fish Hatchery.
  • 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.
  • An unidentified scale insect (family Coccoidae) from the wild in Cameroon.
  • Picture of the feet of an endangered (IUCN) and federally endangered Malayan tapir (Tapirus indicus).
  • Picture of a federally endangered, American alligator (Alligator mississippiensis) at the Kansas City Zoo.
  • Picture of a red-faced parrot finch or red-throated parrotfinch (Erythrura psittacea) at Sylvan Heights Waterfowl Park.
  • Photo: An Angolan or half-banded gartersnake (Elapsoidea semiannulata) at the Sedgwick County Zoo in Wichita, Kansas.
  • A critically endangered (IUCN) and federally endangered hawksbill turtle (Eretmochelys imbricata) at the XCaret Resort in Mexico.
  • A diamondback water snake (Nerodia rhombifer rhombifer) at the Tulsa Zoo.
  • Photo: A Uluguru caecilian, Boulengerula uluguruensis, at the Sedgwick County Zoo.
  • Photo: Squeaking crab (Ovalipes guadalupensis) at Gulf Specimen Marine Lab.
  • Picture of a toucan barbet (Semnornis ramphastinus) at the National Aviary breeding center in Palmar, Colombia.
  • Photo: A bushy tailed jird (Sekeetamys calurus makrami) at the Plzen Zoo.
  • Picture of an endangered (IUCN) and federally endangered Hispaniolan solenodon (Solenodon paradoxus) at Parque Zoologico Nacional in the Dominican Republic.
  • Photo: A South American mountain lion (Puma concolor puma) at the Santiago Zoo.
  • Photo: A tri-color ryukin, a fancy breed of goldfish at Ocean Park in Hong Kong.
  • Picture of a grizzly bear (Ursus arctos horribilis) at the Sedgwick County Zoo.
  • Photo: Cave cricket (Phaeophilacri bredoides) at the Budapest Zoo.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Photo: Trachyaretaon sp "AuroraÓ at the Budapest Zoo. This is new to science.
  • A short-toed snake eagle (Circaetus gallicus gallicus) at Parque Biologico in Vila Nova de Gaia, Porto, Portugal.
  • A blue-tongued skink (Tiliqua scincoides intermedia) at the Sunset Zoo.
  • Picture of a cat ba cave gecko (Goniurosaurus catbaensis) at the St. Louis Zoo.
  • A boxelder bug (Boisea trivittata).
  • Photo: A grayish baywing (Agelaioides badius badius) at Fundacao Jardim Zoologico de Brasilia.
  • Picture of a blue-necked tanager (Tangara cyanicollis) at Pandemonium Aviaries in Los Altos Hills, California.
  • A blue-sided garter snake (Thamnophis similis similis) at the Lowry Park Zoo in Tampa, FL.
  • Photo: A male and female ray-finned fish at Zoo Plzeň.
  • Photo: A male Khivan pheasant (Phasianus colchicus chrysomelas) at the Plzen Zoo.
  • South African crowned crane (Balearica regulorum regulorum) at Parc des Oiseaux in Villars Les Dombes, France.
  • Picture of an endangered (IUCN) and federally endangered Malayan tapir (Tapirus indicus).
  • Photo: An Eastern spiny-tailed gecko (Strophurus williamsi) at the Healesville Sanctuary.
  • Picture of a lesser snow goose (Chen caerulescens caerulescens).
  • Photo: A Persian leopard (Panthera pardus saxicolor) at the Lisbon Zoo in Portugal.
  • A great southern white butterfly (Ascia monuste) at the Gladys Porter Zoo in Brownsville, Texas.
  • A Moiese burbot (Lota lota) at the Kootenai Tribal Hatchery, Idaho.
  • Photo: A yellow-billed lorikeet (Neopsittacus musschenbroekii) photographed at Loro Parque Fundacion, Puerto de la Cruz, Tenerife.
  • Picture of a Doris longwing (Laparus doris) at the Saint Louis Zoo.
  • Picture of a diablito, also known as a little devil poison frog (Oophaga sylvatica) Alto Tambo, Ecuador locality, from a private collection.
  • Picture of a Ross's goose (Chen rossii).
  • Photo: Colombian giant tarantula (Megaphobema robustum) at the Phoenix Zoo.
  • Picture of a vulnerable female Eurasian griffon vulture (Gyps fulvus) named Nesher, which means Eagle in Hebrew.
  • Indian tent turtle (Kachuga tentoria) at the Tennessee Aquarium.
  • A North American river otter (Lontra canadensis) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • A western fox snake (Elaphe vulpina vulpina).
  • A vulnerable lesser adjutant stork (Leptoptilos javanicus) named Sammi at the Cincinnati Zoo.
  • Photo: A female Mindanao wrinkled hornbill, Rhabdotorrhinus leucocephalus, at Talarak Foundation.
  • Photo: A unidentified moth species (Lepidoptera) at Fauna Andina, a conservation center near Villarrica, Chile.
  • Nikolsky's viper (Vipera nikolskii) at the St. Louis Zoo.
  • Arabian oryx, Oryx leucoryx, at the Phoenix Zoo. This species is listed as vulnerable.
  • Photo: Leeloo, a six-year-old white-tailed prairie dog (Cynomys leucurus) photographed in Utah.
  • Photo: Nymph of the thorny walking stick (Trachyaretaon brueckneri) at the Exmoor Zoo.
  • Photo: A pirate perch (Aphredoderus sayanus) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • Picture of a smooth stick insect (Clitarchus hookeri) at the Auckland Zoo.
  • A boxelder bug (Boisea trivittata).
  • A federally endangered West African slender-snouted crocodile (Mecistops cataphractus) from the private collection of Curt Harbsmeier.
  • Photo: A painted Madagascar gecko, Paroedura picta, from a private collection.
  • A red-sided curly-tailed lizard (Leiocephalus schreibersii) at the Houston Zoo.
  • Photo: A little owl (Athene noctua vidalii) at Parque Biologico.
  • Photo: Grey gull (Leucophaeus modestus) at the Sedgwick County Zoo.
  • Photo: A black headed python (Aspidites melanocephalus) at Reptile Gardens.
  • Photo: Alaska Skate (Bathyraja parmifera) at the Alaska SeaLife Center in Seward, AK.
  • A western Mojave glossy snake (Arizona elegans candida) from a private collection.
  • A Harris's hawk (Parabuteo unicinctus harrisi) at the New York State Zoo in Watertown, NY.
  • Photo: A spotted seal named Sura at the Alaska SeaLife Center in Seward, AK.
  • Brown booby (Sula leucogaster brewsteri) in adult plumage at International Bird Rescue Center.
  • Photo: An European greenfinch (Carduelis chloris aurantiiventris) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: Grandfather Mountain crayfish (Cambarus eeseeohensis) from the wild.
  • Photo: Striped flying barb (Esomus metallicus) at Zoo Negara.
  • Picture of a blue-winged mountain-tanager (Anisognathus somptuosus) at the National Aviary breeding center in Palmar, Colombia.
  • Photo: A stream tree frog (Hyloscirtus hillisi) at Balsa de los Sapos.
  • Photo: A critically endangered Coyne's harlequin frog (Atelopus coynei) at Centro Jambatu in Quito, Ecuador.
  • A grey carpetshark (Chiloscyllium punctatum) at the Oklahoma City Zoo.
  • Photo: An endangered (IUCN) and federally endangered snow leopard (Panthera uncia) at the Miller Park Zoo.
  • Photo: A Kawall’s amazon (Amazona kawalli) at Fundacao Jardim Zoologico de Brasilia.
  • 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 a cardinal shiner (Luxilus cardinalis) collected in Cherokee County, Oklahoma, at the Oklahoma City Zoo.
  • Northern crescent (Phyciodes cocyta) from a prairie woodland near Cross Lake, Minnesota.
  • A black-winged kite (Elanus caeruleus caeruleus) at Parque Biologico.
  • Photo: A painted bronzeback (Dendrelaphis pictus) at the Plzen Zoo in the Czech Republic.
  • Photo: An Austral parakeet (Enicognathus ferrugineus minor) at the Santiago Zoo.
  • Hall's New Guinea crocodile (Crocodylus halli) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • A midwest worm snake (Carphophis amoenus helenae) from the Shawnee National Forest.
  • Picture of a strawberry poison dart frog (Oophaga (Dendrobates) pumilio) at Omaha's Henry Doorly Zoo.
  • Photo: A Pel’s fishing owl (Scotopelia peli) at the Monticello Center in Italy.
  • Photo: A Mexican bobwhite (Colinus virginianus mexicanus) at Penang Bird Park.
  • Reticulated glass frog or La Palma glass frog (Hyalinobatrachium valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.
  • A vulnerable big-headed Amazon river turtle (Peltocephalus dumerilianus) at the National Aquarium, Baltimore.
  • A white-crested laughing thrush (Garrulax leucolophus) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Picture of a Mississippi kite (Ictinia mississippiensis) at the Raptor Recovery Center, Lincoln, Nebraska.
  • Picture of a Texas coral snake (Micrurus tener) at the Fort Worth Zoo.
  • Photo: A European rabbit (Oryctolagus cuniculus) at Zoopark Zajezd.
  • Photo: Cape parrot, Poicephalus robustus, at Loro Parque Fundacion.
  • Picture of a sulphur-crested cockatoo (Cacatua galerita).
  • Blonde Madagascar hognose snake (Leioheterodon modestus) at the Omaha Zoo.
  • Photo: A green twinspot (Mandingoa nitidula) at the Zoo Berlin.
  • Photo: Banded horned treefrog (Hemiphractus fasciatus) at El Valle Amphibian Center.
  • Photo: Buff-necked ibis (Theristicus caudatus) at the National Aviary of Colombia.
  • Picture of a male blue dacnis (Dacnis cayana) at Tracy Aviary.
  • 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 behind the scenes shot of a black-headed night monkey (Aotus nigriceps) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: A mealworm (Tenebrio molitor) at the Butterfly Pavilion.
  • Picture of a Mississippi kite (Ictinia mississippiensis) at the Raptor Recovery Center, Lincoln, Nebraska.
  • Photo: An endangered Kulan (Equus hemionus kulan) at Plzen Zoo in the Czech Republic.
  • Photo: A crested guan (Penelope purpurascens aequatorialis) at the Nispero Zoo.
  • A sauger fish (Sander canadensis) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: Familiar bluet (Enallagma civile) at Cedar Point Biological Station.
  • Photo: An Asian palm civet (Paradoxurus hermaphroditus philippinensis) at the Plzen Zoo.
  • Photo: Yellow billed Amazon, Amazona collaria, at Loro Parque Fundacion.
  • Photo: Common wall lizard (Podarcis muralis) at Wroclaw Zoo.
  • A blood python (Python brongersmai) at the Omaha Zoo.
  • Photo: Two riffle elimia (Elimia clara) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL.
  • Red-sided eclectus parrots or New Guinea Eclectus (Eclectus roratus polychloros) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
  • Photo: White-ringed atlas moth (Epiphora mythimnia) at the McGuire Center of the Florida Museum of Natural History.
  • A boreal owl (Aegolius funereus richardsoni) at the Alaska Zoo.
  • Photo: A male Mrs. Hume's pheasant (Syrmaticus humiae humiae) at a private collection.
  • A rough-skinned newt (Taricha granulosa) at the Oregon Zoo.
  • Photo: A blue crayfish or Peninsula crayfish (Procambarus paeninsulanus) at the Oklahoma Aquarium.
  • A vulnerable (IUCN) Tarahumara leopard frog (Lithobates tarahumarae) at the Arizona-Sonora Desert Museum.
  • Photo: Woolly-necked stork (Ciconia episcopus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A Rhode Island red domestic chicken (Gallus gallus domesticus) in Lincoln, Nebraska.
  • A federally endangered Key Largo wood rat (Neotoma floridana smalli) at Disney's Animal Kingdom. Fewer than 250 adults are believed left in the wild, in just two parcels of public land on Key Largo. Captive breeding efforts are underway at both Disney's Animal Kingdom and the Lowry Park Zoo in Tampa, thought the captive population still numbers less than 50 animals.
  • A channel catfish (Ictalurus punctatus) at the Genoa National Fish Hatchery.
  • Photo: Kokanee salmon (Oncorhynchus nerka) photographed at Downtown Aquarium in Denver, Colorado.
  • Marbled or bird dropping frogs (Hyla marmorata) from a private collection.
  • 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.
  • Picture of Southern pochards (Netta erythrophthalma) at the Sylvan Heights Bird Park.
  • Photo: Collared lory (Phigys solitarius) at Loro Parque Fundacion.
  • Vulnerable blackside daces (Chrosomus cumberlandensis) at Conservation Fisheries.
  • Coturnix quail (Coturnix coturnix japonicus) at the Sutton Avian Research Center.
  • Photo: A male ruby-crowned kinglet (Regulus calendula calendula) at the Akron Zoo.
  • An Ecuadorian pinktoe tarantula (Avicularia huriana) at the Moscow Zoo.
  • A southern crested caracara (Caracara plancus) at the Gladys Porter Zoo in Brownsville, Texas.
  • A critically endangered (IUCN) and federally endangered Jamaican boa (Chilabothrus subflavus) at the St. Louis Zoo.
  • Photo: Eastern glass lizard (Ophisarus ventralis) at the Estuarium in Dauphin Island, AL.
  • A speckled forest pitviper (Bothriopsis taeniata) at the Fort Worth Zoo.
  • Critically endangered Roti Island snake-necked turtle (Chelodina mccordi) at the Toledo Zoo.
  • A federally threatened Northern spotted owl (Strix occidentalis caurina) named Opal.
  • Photo: A Northern Philippine eagle-owl (Bubo philippensis philippensis) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • An Eastern mole (Scalopus aquaticus machrinoides) at the Wildlife Rescue Center of Minnesota.
  • A patterned velvet ant (Dasymutilla sicheliana) at Springs Preserve.
  • Photo: An unidentified milkbug belonging to the Pyrrhocoridae family at Museo d'Orbigny.
  • Photo: A hairy frog (Trichobatrachus robustus) from a private collection.
  • Photo: An Atlantic needlefish (Strongylura marina) at Gulf Specimen Marine Lab and Aquarium.
  • Picture of a Sulawesi ground dove (Gallicolumba tristigmata bimaculata) at the Plzen Zoo.
  • Photo: An Eastern Montpellier snake (Malpolon insignitus) at Prague Zoo.
  • Photo: A yellow-billed seedeater (Sporophila nigricollis) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: A luzon horned tree frog (Platymantis luzonensis) at the University of the Philippines.
  • Photo: Ferruginous pygmy owl (Glaucidium brasilianum) at the National Aviary of Colombia.
  • Photo: A red-bellied fruit dove (Ptilinopus greyi) at the Zoo Berlin.
  • A Japanese giant salamander (Andrias japonicus) at the San Antonio Zoo. (IUCN: Near Threatened)
  • Photo: A southern hognose snake (Heterodon simus) in red and white color phases, at a private collection.
  • Photo: A group of sea grapes (Molgula manhattensis) at Gulf Specimen in Panacea, Florida.
  • A pair of white-crowned robin-chats (Cossypha albicapillus albicapillus) at the Columbus Zoo.
  • Photo: A zebra mussel (Dreissena polymorpha) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • 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: Tri-colored hognose snake (Lystrophis pulcher) from a private collection.
  • Photo: A green anaconda (Eunectes murinus) at Reptile Gardens.
  • Photo: A green snake (Philodryas olfersii olfersii) at Fundacao Jardim Zoologico de Brasilia.
  • 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 female yellow-bellied Sapsucker (Sphyrapicus varius) at Bay Beach Wildlife Sanctuary.
  • Two cape teals (Anas capensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: Common moorhen (Gallinula chloropus) in Choussy, France.
  • Indian crested porcupine (Hystrix indica) at the Omaha Zoo.
  • Picture of a vulnerable Blue-headed macaw (Primolius couloni) at Tracy Aviary.
  • A vulnerable salmon-crested cockatoo,(Cacatua moluccensis), at the Sedgwick County Zoo.
  • Photo: A silver carp (Hypophthalmichthys molitrix) at the Schramm Education Center near Gretna, NE.
  • A giant water beetle (Belostomatidae sp.)
  • Photo: A seepage salamander (Desmognathus aeneus) at a private collection.
  • Photo: Pacific herring, Clupea pallasii, at the Alaska SeaLife Center.
  • Picture of a little spotted kiwi or little gray kiwi (Apteryx owenii owenii) at the Wellington Zoo.
  • A male okapi (Okapia johnstoni) at White Oak Conservation Center.
  • Photo: Little blue heron (Florida caerulea) at the National Aviary of Colombia.
  • Photo: Purple shore crab (Hemigrapsus nudus) at the Loveland Living Planet Aquarium in Draper, UT.
  • Photo: A Fiji Island banded iguana (Brachylophus fasciatus) at Omaha's Henry Doorly Zoo.
  • Photo: Indian rock python (Python molurus molurus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Picture of a common eastern bumblebee (Bombus impatiens) at the St. Louis Zoo.
  • Damaraland mole rats (Fukomys damarensis) at the Houston Zoo. These burrowing rodents from sub-Saharan Africa are one of only two known eusocial mammals.
  • Picture of a federally endangered jaguarundi (Puma yagouaroundi) at Bear Creek Feline Center.
  • Photo: Indian green shrimp (Caridina babaulti) from a private collection.
  • An unidentified scale insect (family Coccoidae) from the wild in Cameroon.
  • Picture of a diamondback terrapin (Malaclemys terrapin) from a private collection.
  • A juvenile green rat snake (Senticolis triaspis) at the Arizona-Sonora Desert Museum.
  • Photo: A James's flamingo (Phoenicoparrus jamesi) at the Zoo Berlin.
  • Photo: Spotted lungfish (Protopterus dolloi) at the Moscow Zoo.
  • Canebrake rattlesnake (Crotalus horridus atricaudatus) at the Riverbanks Zoo.
  • Photo: Flying gurnard (Dactylopterus volitans) at Loro Parque.
  • An Eastern mole (Scalopus aquaticus machrinoides) at Nebraska Wildlife Rehab, Inc.
  • Picture of an Auckland tree weta (Hemideina thoracica) at the Auckland Zoo.
  • Photo: A West African green mamba (Dendroaspis virdis) at Reptile Gardens.
  • Picture of a kelp gull (Larus dominicanus) at the John Ball Zoo in Grand Rapids, Michigan.
  • Photo: True tomato frog (Dyscophus antongilii) at Omaha’s Henry Doorly Zoo.
  • Photo: A field mouse.
  • A Waldrapp ibis (Geronticus eremita) at the Riverside Zoo. Listed as critically endangered (IUCN) and federally endangered
  • Photo: A Yonahlossee salamander (Plethodon yonahlossee) at the Tennessee Aquarium.
  • Vulnerable Stolzmann's horned frogs (Ceratophrys stolzmanni) collected near Pilalo, Ecuador.
  • Picture of a Haitian curlytail lizard (Leiocephalus personatus mentalis) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A dusky-headed conure (Aratinga weddellii) at the Aviario Nacional de Colombia (National Aviary of Colombia).
  • Photo: Desert night lizard (Xantusia vigilis) from a private collection.
  • Photo: A European earwig, Forficula auricularia, at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Photo: Long-nosed pangasius (Pangasius nasutus) at Zoo Negara.
  • Photo: Rock partridge (Alectoris graeca saxatilis) at Alpenzoo in Innsbruck, Austria.
  • Picture of a Red-clawed scorpion (Pandinus cavimanus) at the Saint Louis Zoo.
  • A vulnerable red-breasted goose (Branta ruficollis) at the Sedgwick County Zoo.
  • Photo: EdwardÕs fig parrot (Psittaculirostris edwardsii) at Loro Parque Fundacion.
  • Harley the federally threatened Queensland koala (Phascolarctos cinereus adustus) recovers from two broken legs at the Australia Zoo Wildlife Hospital in Queensland. He was hit by a car, which is a common occurrence with koalas and fatal for many.
  • Photo: A checkerboard cichlid (Crenicara punctulatum) at Dallas World Aquarium.
  • Photo: An assassin snail (Clea helena) at Safari Park Dvur Kralove.
  • Photo: A male Aru Island eclectus parrot, Eclectus roratus aruensis, at Loro Parque Fundacion.
  • Coturnix quail (Coturnix coturnix japonicus) at the Sutton Avian Research Center.
  • Picture of a black-breasted buttonquail (Turnix melanogaster) at the Healesville Sanctuary.
  • Picture of an Eastern Florida terrapin (Malaclemys terrapin tequesta) at the Brevard Zoo.
  • Picture of a common waxbill (Estrilda astrild) from a private collection.
  • A Barbary falcon (Falco pelegrinoides).
  • Photo: A male western red-billed toucan (Ramphastos tucanus tucanus) at the Dallas World Aquarium.
  • Photo: African striped skink, Trachylepis striata, at the Houston Zoo.
  • Photo: A hairy crab (Pilumnus sayi) at Gulf Specimen in Panacea, Florida.
  • Photo: Pygmy mulga monitor (Varanus gilleni) at Lilydale High School in Australia.
  • Photo: A kaiser spotted newt (Neurergus kaiseri) from Conservation Fisheries.
  • An Ozark zigzag salamander (Plethodon angusticlavius) at Missouri State University, Springfield, Missouri.
  • Photo: Huarani Otocinclus catfish (Otocinclus huaorani) at a private collection in Gainesville, Florida.
  • Photo: Male and female common scoters (Melanitta nigra) at Monticello Center in Italy.
  • Photo: A bluehead chub (Nocomis leptocephalus) from a private collection in Knoxville, Tennessee.
  • Photo: Walking stick (Datamas mouhotii) at the Budapest Zoo.
  • Photo: JerdonÕs baza (Aviceda jerdoni) at the Assam State Zoo cum Botanical Garden.
  • Photo: A Cape vulture (Gyps coprotheres) at The International Centre for Birds of Prey in England.
  • Photo: Grey-faced buzzard (Butastur indicus) at Eltoro Zoo de la Castellana, Inc., on Negros Island, Philippines.
  • Photo: Indian wolves (Canis lupus pallipes) at the Singapore Zoo.
  • Photo: Red-spotted burrowing frog (Lepodactylus laticeps) at the Lowry Park Zoo in Tampa, FL.
  • Picture of a grizzly bear, Ursus arctos horribilis, at Sedgewick County Zoo.
  • Relict darter (Etheostoma chienense) a federally threatened species at Conservation Fisheries, a native stream fish breeding center. The female is smaller than the male in with her.
  • Bess beetles, also known as patent leather beetles (Odontotaenius disjunctus) at the University of Nebraska's entomology lab.
  • Photo: Yellow-fronted canary (Serinus mozambicus granti) in Santa Cruz, Tenerife, Spain.
  • Photo: Cobalt winged parakeet (Brotogeris cyanoptera cyanoptera) at Loro Parque Fundacion.
  • Photo: Tiger wandering spider (Cupiennius salei) at the Moscow Zoo.
  • Photo: A 6 month old pale-mandibled aracari (Pteroglossus torquatus erythropygius) at the Dallas World Aquarium.
  • European white stork (Ciconia ciconia ciconia) at the Lincoln Children's Zoo.
  • Picture of a vulnerable white-crowned pigeon (Patagioenas leucocephala) from a private collection in the Dominican Republic.
  • Picture of a critically endangered (IUCN) and federally endangered gharials (Gavialis gangeticus) at the Kukrail Gharial and Turtle Rehabilitation Centre in Lucknow, India.
  • Picture of an undescribed harlequin frog (Atelopus species) from Suriname.
  • Photo: A common ringtail possum (Pseudocheirus peregrinus) at the Taronga Zoo.
  • New Mexico spadefoot toad (Spea multiplicata) at the Arizona-Sonora Desert Museum.
  • A Baja blue rock lizard (Petrosaurus thalassinus) at the Indianapolis Zoo.
  • Photo: A female Horsfield’s kalij pheasant (Lophura leucomelanos lathami) from a private collection.
  • Photo: A Wagner's gerbil, Gerbillus dasyurus, at the Plzen Zoo in the Czech Republic.
  • A chrysalis of the Schaus' Swallowtail or Island Swallowtail (Heraclides aristodemus ponceanus) at the McGuire Center of the Florida Museum of Natural History.
  • Photo: Western coachwhip (Masticophis flagellum) collected in Chase County, Nebraska.
  • Photo: Crested francolin (Dendroperdix sephaena grantii) at Safari Park Dvur Kralove.
  • Rough knob-tailed gecko (Nephrurus amyae) at the Omaha Zoo.
  • Picture of two Zestos skippers (Epargyreus zestos) at the McGuire Center for Lepidoptera and Biodiversity.
  • A nine-banded armadillo (Dasypus novemcintus) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Photo: A female Sumba hornbill (Rhyticeros everetti) at Bali Bird Park in Bali, Indonesia.
  • Picture of a badger (Taxidea taxus) at Wildlife Images, an animal rehabilitation center near Merlin, OR.
  • Photo: An endangered Bornean white-bearded gibbon (Hylobates albibarbis) at Taman Safari in Bogor, West Java, Indonesia.
  • Picture of a powder blue tang also known as a powderblue surgeonfish (Acanthurus leucosternon) at Nebraska Aquatic Supply.
  • Photo: An American bullfrog (Lithobates catesbeianus) at the Schramm Education Center near Gretna, NE. This specimen is axanthic, meaning it lacks yellow pigment.
  • Photo: Visayan leopard cat (Prionailurus bengalensis rabori) at the Avilon Zoo.
  • Violet turaco (Musophaga violacea) at the Lincoln Children's Zoo.
  • Photo: White tubercled crayfish, Procambarus spiculifer, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Peacock Creek, Flemington GA.
  • Photo: A Bonelli’s eagle (Aquila fasciata fasciata) at Sia, the Comanche Nation Ethno-Ornithological Initiative.
  • Photo: A Condor harlequin frog, Atelopus sp. nov.
  • Photo: A male Perinet chameleon (Calumma gastrotaenia) in Madagascar.
  • Photo: Scribbled rabbitfish (Siganus doliatus) from Gulf Specimen Marine Laboratories.
  • Photo: A curl-crested jay (Cyanocorax cristatellus) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: A mountain fork crayfish (Cambarus diupalma) collected near New Market, Alabama, by the West Liberty University Crayfish Conservation Lab. This species is restricted to one stream in Alabama
  • A vulnerable North American wood turtle (Glyptemys insculpta) from a private collection.
  • A striped robber frog (Pristimantis unistrigatus) near Limon, Ecuador.
  • Photo: Hasari, a federally endangered three-year-old cheetah (Acinonyx jubatus) at White Oak Conservation Center.
  • A California scrub jay (Aphelocoma californica californica) at Wildlife Images, a rehabilitation center near Merlin, OR.
  • Photo: Yellow cardinal (Gubermatrix cristata) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Photo: Cuban trogon (Priotelus temnurus) in Choussy, France.
  • Photo: A stick insect (Phasmatidae sp.) at the University of the Philippines.
  • Photo: Northern or black-necked screamer (Chauna chavaria) at the National Aviary of Colombia.
  • Picture of an orange eyed tree frog (Litoria chloris) at Wild Life Sydney Zoo.
  • Picture of a mole kingsnake (Lampropeltis calligaster rhombomaculata) at the Knoxville Zoo.
  • Photo: An eastern screech owl, (Megascopes asio), at a raptor recovery center near Lincoln, NE.
  • Photo: A Rufous hornbill (Buceros hydrocorax mindanensis) at Jurong Bird Park.
  • A crawfish from Bioko Island, Equatorial Guinea.
  • Picture of an endangered (IUCN) and federally endangered Hispaniolan solenodon (Solenodon paradoxus) at Parque Zoologico Nacional in the Dominican Republic.
  • Photo: A Broadley's bush viper (Atheris broadleyi) at Reptile Lagoon in Hamer, South Carolina.
  • Photo: Tyrrhenian wall lizard (Podarcis tiliguerta) at the Plzen Zoo in the Czech Republic.
  • Photo: A spotted sucker (Minytrema melanops) at the Oklahoma Aquarium.
  • Photo: Common greenback frog (Hylarana erythraea) at the Singapore Zoo.
  • Flap-necked chameleon (Chamaeleo dilepis petersii) collected in Gorongosa National Park.
  • Photo: Eurasian sparrowhawk (Accipiter nisus) at the Budapest Zoo.
  • Photo: Striped legless lizard (Delma impar) at Moonlit Sanctuary
  • Photo: A juvenile Rosenberg gladiator frog (Hypsiboas rosenbergi) at Centro Jambatu in Quito, Ecuador.
  • Photo: Two Bosnian alpine newts (Mesotriton alpestris reiseri) at WWT Slimbridge in England.
  • A critically endangered and federally endangered, six-week-old female baby gorilla (Gorilla gorilla gorilla) at the Cincinnati Zoo.
  • Picture of critically endangered (IUCN), federally endangered fat threeridges (Amblema neislerii) collected from the Chipola River near Wewahitchka, Florida.
  • Photo: A BedriagaÕs wonder gecko (Teratoscincus bedriagai) from a private collection.
  • Photo: Chappell Island tiger snake (Notechis scutatus scutatus) from a private collection.
  • Photo: Columbian tegu lizard (Tupinambis teguixin) at Seattle Reptiles.
  • Picture of an endangered fishing cat (Prionailurus viverrinus) at the Point Defiance Zoo.
  • Picture of a three stripe corydoras (Corydoras trilineatus) at Pure Aquariums.
  • Picture of a black-necked swan (Cygnus melanocoryphus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: Mongolian gerbil (Meriones unguiculatus) wild caught in Mongolia, at the Moscow Zoo.
  • A Field’s viper (Pseudocerastes fieldi) at Reptile Gardens.
  • Photo: A critically endangered Maingano cichlid (Melanochromis cyaneorhabdos) from a private collection.
  • Photo: A giraffe cichlid (Haplochromis venustus) at the Medicine Park Aquarium and Natural Sciences Center in Medicine Park, OK.
  • Photo: Eastern blacknose dace (Rhinichthys obtusus) at East Bay Regional Park District.
  • Photo: A male fantail darter (Etheostoma flabellare) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Butler Creek, Lauderdale County, AL.
  • A Cavendish's dik-dik (Madoqua kirkii cavendishi) at the Kansas City Zoo.
  • Photo: A critically endangered, 5-year-old, captive bred, Zhou's box turtle (Cuora zhoui) at the Turtle Survival Center.
  • A stiletto snake (Atractaspis bibronii) at the Omaha Zoo. This snake is also known as a Bibron's mole viper and Bibron's burrowing asp.
  • Photo: A green spiny lizard (Sceloporus malachiticus) at Petra Aqua.
  • Picture of a chestnut breasted munia (Lonchura castaneothorax) at the Healesville Sanctuary.
  • A Dominican red mountian boa (Epicrates striatus striatus) from a private collection.
  • Picture of an endangered pileated gibbon with her eight-month-old infant (Hylobates pileatus) at the Gibbon Conservation Center
  • Photo: A Mexican jumping pitviper (Metlapilcoatlus nummifer) at Reptile Lagoon in Hamer, South Carolina.
  • A black-throated magpie-jay (Calocitta colliei) from the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A mole salamander (Ambystoma talpoideum) from a private collection.
  • Photo: Baby aye-aye (Daubentonia madagascariensis) named Tonks, 16 days old, at the Denver Zoo.
  • Photo: A male Sumba hornbill (Rhyticeros everetti) at Bali Bird Park in Bali, Indonesia.
  • An eastern black-and-white colobus monkey (Colobus guereza) at the Columbus Zoo.
  • Picture of an endangered Yellow Asian pond turtle (Mauremys nigricans) at the Denver Aquarium.
  • A mallard (Anas platyrhynchos) duckling.
  • Photo: A sea pork (Aplidium stellatum) at Gulf Specimen in Panacea, Florida.
  • A red-eyed tree frog (Agalychnis callidryas), at the Sunset Zoo in Manhattan, KS.
  • A Honduran curly hair tarantula (Tlitocatl albopilosus) at the Topeka Zoo.
  • Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.
  • Photo: A whitefin shiner (Cyprinella nivea) from a private collection in Knoxville, Tennessee.
  • Photo: Western reef egret (Egretta gularis) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Texas rat snake (Elaphe obsoleta lindheimeri) at the Omaha Zoo.
  • Photo: Graceful crab (Metacarcinus gracilis) holding eggs under its tail at the Loveland Living Planet Aquarium in Draper, UT.
  • Photo: Barred parakeet, Bolborhynchus lineola, at Loro Parque Fundacion.
  • An Andean porcupine (Coendou quichua) named Piper at the Saint Louis Zoo.
  • Cooper's hawk (Accipiter cooperii) at The Wildlife Center in Espanola, New Mexico.
  • Picture of a Huntsman spider (Heteropoda venatoria) at the Central Florida Zoo.
  • Photo: A finger-shaped sea pen (Veretillum cynomorium) at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Photo: Yellow-banded pipefish (Doryrhamphus pessuliferus) at Ripley's Aquarium of Canada.
  • Photo: Harper's beauty, Harperocallis flava, a federally listed plant from Florida.
  • Florida box turtle (Terrapene carolina bauri) at the Lowry Park Zoo.
  • Federally endangered peninsula pronghorn antelopes (Antilocapra americana peninsularis). This is one of North America's rarest mammals, with fewer than 200 surviving in the wild.
  • Photo: A giant scops owl (Otus gurneyi) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list and as federally endangered.
  • A common green magpie (Cissa chinensis) at the Fort Wayne Children's Zoo.
  • Photo: A European water vole, Arvicola terrestris, at Wildwood Trust near Canterbury, England.
  • A vulnerable hyacinth macaw (Anodorhynchus hyacinthinus) at the Fort Worth Zoo.
  • A barking gecko or thick-tailed gecko (Underwoodisaurus milii) at the Tennessee Aquarium.
  • A vulnerable robber frog (Pristimantis calcarulatus) near Mindo, Ecuador.
  • A giant rhino beetle grub (Megasoma gyas porioni) at the Budapest Zoo.
  • Photo: Mammoth Spring crayfish (Orconectes marchandi) from the wild.
  • Photo: Walking stick (Myronides sp. "PelengÓ) at the Budapest Zoo.
  • A federally threatened North American black bear (Ursus americanus) at Omaha Zoo's Wildlife Safari Park.
  • Photo: A mole salamander (Ambystoma talpoideum) from a private collection.
  • A redback salamander (Plethodon cinereus) at the National Mississippi River Museum and Aquarium, Dubuque, Iowa.
  • Narrow-headed garter snake (Thamnophis rufipunctatus) at the Phoenix Zoo.
  • Photo: Black Headed Grosbeak (Pheucticus melanocephalus) at the Wildlife Care Association
  • Photo: A brown wood owl (Strix leptogrammica maingayi) at Penang Bird Park.
  • An eastern yellow-billed hornbill (Tockus flavirostris flavirostris) at the Indianapolis Zoo.
  • Photo: Apalachicola kingsnake (Lampropeltis getula meansi) at the Cincinnati Zoo.
  • Photo: A buffy fish owl (Ketupa ketupu aagaardi) at the Prague Zoo.
  • An acorn woodpecker (Melanerpes formicivorus) at Wildlife Images, an animal rehabilitation center near Merlin, Oregon.
  • Photo: A federally-endangered Guyandotte River crayfish (Cambarus veteranus) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Wood frog (Lithobates sylvaticus or Rana sylvatica) at the National Aquarium in Baltimore.
  • Photo: Loach minnow (Rhinichthys cobitis) at the Aquatic Research and Conservation Center.
  • Picture of a Gulf Coast water dog (Necturus beyeri) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • A Taylor's bug-eyed frog (Theloderma stellatum) at the Fresno Chaffe Zoo.
  • Picture of a female false black widow spider (Steatoda grossa) at the Knoxville Zoo.
  • Critically endangered (IUCN) and federally endangered Cumberlandian combshell (Epioblasma brevidens). It has lures that look like fish eggs on top that are used to attract fish. When a fish strikes at the lures, the mussels then eject their larvae into the fish's gills and are able to increase their distribution, even upstream. The Clinch River has more federally listed aquatic species than any river in North America, yet is threatened by pollution and habitat loss. Coal mining in the watershed now raises the threat even more.
  • Photo: An eastern goliath stick insect (Eurycnema goliath) at the Melbourne Zoo.
  • A white-lipped island pit viper (Trimeresurus insularis) at the Woodland Park Zoo.
  • A federally endangered Karner blue butterfly (Lycaeides melissa samuelis) at the Toledo Zoo.
  • Photo: Gaboon forest frog (Scotobleps gabonicus) near Manjo, Cameroon.
  • Picture of a common brown lemur (Eulemur fulvus) at Omaha's Henry Doorly Zoo and Aquarium.
  • An Australian freshwater crocodile (Crocodylus johnsoni) at the Omaha Zoo.
  • Photo: Dalmatian wall lizard (Podarcis melisellensis) at Wroclaw Zoo.
  • Photo: Cumberland crayfish, Cambarus cumberlandensis, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Cumberland River, TN.
  • Photo: African wildcat (Felis silvestris ocreata) at the Moscow Zoo.
  • Picture of a Red-winged blackbird (Agelaius phoeniceus) at Tracy Aviary.
  • Photo: A cunner (Tautogolabrus adspersus) at the Maine State Aquarium in West Boothbay, ME.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Reunion Island day gecko (Phelsuma borbonica borbonica) at the Omaha Zoo.
  • Picture of a ribbon snake (Thamnophis sauritus) at the New York State Zoo in Watertown, NY.
  • Photo: Siberian flying squirrel (Pteromys volans) at the Moscow Zoo.
  • Photo: Mottled owl (Strix virgata) at Monticello Center in Italy.
  • Picture of a Red-necked phalarope (Phalaropus lobatus) at the Monterey Bay Aquarium.
  • A Great Plains toad (Anaxyrus or Bufo cognatus) at the Phoenix Zoo.
  • A boulder darter (Etheostoma wapiti) at Conservation Fisheries, Knoxville, Tennessee. (IUCN: Vulnerable, US: Endangered)
  • A Giant snake-necked turtle (Chelodina expansa) at the Australia Zoo Wildlife Hospital.
  • Photo: A Mekong snail-eating Turtle (Malayemys subtrijuga) at Angkor Centre for Conservation of Biodiversity (ACCB) in Cambodia.
  • Photo: Cloncurry ringneck, Barnadius zonarius macgillivrayi, at Loro Parque Fundacion.
  • Photo: Blue-spotted ribbontail ray (Taeniura lymma) at the Lisbon Aquarium, Oceanario de Lisboa.
  • Photo: Moon coral (Favites sp.) at Butterfly Pavilion.
  • Picture of a Flying steamer duck, Tachyeres patachonicus, at Sylvan Heights Bird Park.
  • Photo: California red sided garter snake (Thamnophis sirtalis infernalis) at the Exmoor Zoo.
  • A vulnerable (IUCN) greater prairie-chicken (Tympanuchus cupido.)
  • Photo: Schoolmaster snapper (Lutjanus apodus) at the Albuquerque BioPark Aquarium.
  • A Rio Grande leopard frog (Lithobates berlanderi) at the Vancouver Aquarium.
  • Photo: An Amazon milk tree frog (Trachycephalus resinifictrix) at Reptile Gardens.
  • A Hartlaub's turaco (Tauraco hartlaubi) at the Houston Zoo.
  • Photo: A juvenile red-footed booby (Sula sula) at Houston SPCA’s Wildlife Center of Texas.
  • A great grey owl (Strix nebulosa nebulosa) at the New York State Zoo.
  • Bar-headed geese (Anser indicus) at the Audubon Zoo in New Orleans.
  • Photo: A La Digue standing day gecko (Phelsuma sunbergi ladiguensis) at the Plzen Zoo in the Czech Republic.
  • Photo: A juvenile large-headed capuchin monkey (Sapajus macrocephalus) from the Coari area of Amazona, Brazil.
  • A Sandhill crane (Grus canadensis) at the Sutton Avian Research Center.
  • Picture of a bruno morph of a strawberry poison frog (Oophaga pumilio) from a private collection.
  • Photo: Singapore blue tarantula (Lampropelma violaceopes) at the Omaha Zoo.
  • Photo: Button coral (Palythoa sp.) from a private collection in Saint Louis.
  • Picture of a female pink orchid mantis (Hymenopus coronatus) at the St. Louis Zoo.
  • A Coqui frog (Eleutherodactylus coqui) at Zoo Atlanta. A very prolific frog from Puerto Rico that is now an invasive species in both Florida and Hawaii.
  • Photo: A mimic shiner (Notropis volucellus) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Picture of a green kingfisher (Chloroceryle americana cabanisii) at the National Aviary of Colombia.
  • Photo: A brown trout (Salmo trutta) at the Schramm Education Center near Gretna, NE.
  • A critically endangered spider monkey named Arturo, (Ateles geoffroyi geoffroyi) at the Wellington Zoo.
  • Photo: A harlequin flower beetle (Gymnetis thula) at the Houston Zoo.
  • 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.
  • Picture of a longspined porcupinefish also known as a freckled porcupinefish or Porcupine pufferfish (Diodon holocanthus) at the Nebraska Aquatic Supply.
  • Picture of a vulnerable female Bengal slow loris (Nycticebus bengalensis) at the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam.
  • Photo: Amazon pink toe tarantula (Avicularia amazonica) at the Loveland Living Planet Aquarium in Draper, UT.
  • Photo: An Auburn trap door spider (Myrmekiaphila tigris) at the Auburn University Natural History Museum.
  • A spiny softshell turtle (Apalone spinifera) at the aquarium at Gavins Point National Fish Hatchery.
  • Photo: Brown dart frog or Pratt's rocket frog (Colostethus pratti). The photo was taken at the National Aquarium in Baltimore.
  • A bronze frog (Lithobates clamitans) at the Estuarium in Dauphin Island, AL.
  • Photo: A male blue-breasted quail (Excalfactoria chinensis) at the Budapest Zoo.
  • A narrow-banded morph of a Kokoe poison frog (Phyllobates aurotaenia) from a private collection.
  • Picture of fairy cichlids (Neolamprologus brichardi) at Pure Aquariums.
  • Photo: Southern Idaho ground squirrel (Urocitellus brunneus endemicus) at Zoo Boise
  • Photo: A ringed kingfisher (Megaceryle torquata) at the National Aviary of Colombia.
  • Photo: Bowfin (Amia calva) at the MN DNR Center for Aquatic Mollusk Programs.
  • Picture of an endangered Chinese big-headed turtle (Platysternon megacephalum megacephalum) at the Houston Zoo.
  • Picture of a purple swamphen (Porphyrio porphyrio) at the Lowry Park Zoo in Tampa, Florida.
  • Picture of a many-lined salamander (Stereochilus marginatus) from a private collection.
  • A Gulf Coast toad (Incilius valliceps) at the San Antonio Zoo.
  • A plush-crested jay (Cyanocorax chrysops ) at the Houston Zoo. This indivudal says Hello and HI and also has a unique whistle that it has learned from someone over the years. His favored past time is stashing food items in his exhibit.
  • Picture of a common Mexican tree frog (Smilisca baudinii) at the Santa Barbara Zoo.
  • Photo: Chinese oriole (Oriolus chinensis diffusus) in Choussy, France.
  • A juvenile common murre (Uria aalge aalge) at the Omaha Henry Doorly Zoo, Omaha, Nebraska.
  • Picture of a juvenile common or European starling (Sturnus vulgaris) at the Wildlife Center of Silicon Valley.
  • Photo: Hampala barb (Hampala macrolepidota) at Zoo Negara.
  • A Rio Grande leopard frog (Lithobates berlandieri).
  • Bennett's cassowary (Casuarius bennetti edwardsi) at Davao Crocodile Park.
  • Photo: A field sparrow (Spizella pusilla pusilla) at the Akron Zoo.
  • Picture of a male fallow deer (Dama dama) at the Suzhou Zoo.
  • An East African gaboon viper (Bitis g. gabonica) at Reptile Gardens.
  • Picture of a red-billed duck (Anas erythrorhyncha) at the Sylvan Heights Bird Park.
  • A furrowed wood turtle (Rhinoclemmys areolata) at the Chapultepec Zoo in Mexico City.
  • Photo: A freshwater crocodile (Crocodylus johnstoni) at Reptile Gardens.
  • Photo: Boulenger's Madagascar frog (Gephyromantis boulengeri) wild caught in Andasibe, Madagascar.
  • Picture of grey-tailed moustached monkeys (Cercopithecus cephus cephodes) named Arlo and Blue at Park Assango, ONG Animal's World in Libreville, Gabon.
  • Photo: A female Afghan tortoise, Testudo horsfieldii kazachstanica) at Prague Zoo.
  • Photo: A Richardson's cackling goose (Branta hutchinsii hutchinsii) at WWT Slimbridge in England.
  • Photo: A azure jay (Cyanocorax coeruleus) at BioParque do Rio.
  • A blotchside logperch (Percina burtoni) at Conservation Fisheries, Knoxville, Tennessee. (IUCN: Vulnerable)
  • Photo: A Gumprecht's pitviper (Viridovipera gumprechti) at the Oklahoma City Zoo.
  • Photo: Closed brain coral (Symphyllia) at the Loveland Living Planet Aquarium.
  • Photo: A pair of Vulturine guineafowl, Acryllium vulturinum.
  • Picture of hooded katydids (Phyllophorella queenslandica) at Wild Life Sydney Zoo.
  • Photo: A Black marsh turtle (Siebenrockiella crassicollis) at Angkor Centre for Conservation of Biodiversity (ACCB) in Cambodia.
  • Picture of a vulnerable Malay peacock pheasant (Polyplectron malacense) at Pheasant Heaven, a private pheasant breeding center near Clinton, NC.
  • Photo: A king rail (Rallus elegans) at the Carolina Wildlife Center, a place that rescues and rehabilitates injured and orphaned wildlife.
  • Photo: A northern hawk owl (Surnia ulula caparoch) at the Alaska Zoo.
  • Photo: A male golden pheasant (Chrysolophus pictus) at Padmaja Naidu Himalayan Zoological Park.
  • Photo: A Southwest African lion (Panthera leo bleyenberghi) at the Lisbon Zoo. This species is listed as vulnerable by the IUCN.
  • Picture of a Yellow rail (Coturnicops noveboracensis) at the Columbus Zoo.
  • Photo: Several species of invertebrates cling to a bougainvillea hydroid stem at Gulf Specimen in Panacea, Florida.
  • Picture of a Yellow rail (Coturnicops noveboracensis) at the Columbus Zoo.
  • Photo: A hoverfly (Eristalis species) photographed at Spring Creek Prairie Audubon Center near Denton, NE. This fly was originally collected from Bobcat Prairie near Denton, NE.
  • Picture of a Yuman desert fringe-toed lizard (Uma rufopunctata) at the Sedgwick County Zoo.
  • Photo: Dolly Varden trout (Salvelinus malma) at the Alaska SeaLife Center in Seward, AK.
  • Picture of a possibly extinct Bachman's warbler (Vermivora bachmanii) at Tall Timbers Research Station and Land Conservancy.
  • A male checkered white butterfly (Pontia protodice) from Dieken Prairie near Undadilla, Nebraska.
  • Picture of a serval named 'Kenya' at the Fort Worth Zoo.
  • Photo: Holly, a silver laced Wyandotte chicken.
  • Photo: A white-breasted cormorant (Phalacrocorax lucidus) at the Audubon Zoo, part of the Audubon Nature Institute.
  • A red-bellied side-necked turtle (Emydura subglobosa ) at the Fort Worth Zoo.
  • Gouldian finch (Chloebia gouldiae) at the Great Plains Zoo.
  • Photo: Two Hiwassee headwater crayfish (Cambarus parrishi) at the West Liberty University Crayfish Conservation Lab in West Liberty, Virginia.
  • Photo: Smooth newt (Triturus vulgaris) at Wroclaw Zoo.
  • Photo: A royal antelope (Neotragus pygmaeus) at the LA Zoo.
  • Photo: Iowa darter (Etheostoma exile) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: A tiger longwing butterfly (Heliconius hecale) at the Omaha Zoo.
  • Photo: A spotted crake (Porzana porzana) at the Prague Zoo.
  • Photo: Penpoint gunnel (Apodichthys flavidus) at East Bay Regional Park District.
  • A red-legged brown dart frog or rainforest rocket frog (Silverstoneia flotator) at the National Aquarium in Baltimore.
  • Photo: Ganges soft shelled turtle (Nilssonia gangetica) at the Gharial and Turtle Rehabilitation Center in Lucknow, India.
  • Picture of two-week-old black-bellied whistling ducklings (Dendrocygna autumnalis) at the Dallas World Aquarium.
  • A Kootenai River white sturgeon (Acipenser transmontanus) at the Kootenai Tribal Hatchery. (US: Endangered)
  • Photo: Sacramento sucker (Catostomus occidentalis) at East Bay Regional Park District.
  • Photo: Sea peach, (Halocynthia aurantium), at the Alaska SeaLife Center.
  • Picture of an endangered North island kiwi (Apteryx mantelli) at the Columbus Zoo.
  • Photo: A naked mole rat (Heterocephalus glaber) at the Lincoln Children's Zoo.
  • A razorback musk turtle (Sternotherus carinatus) from a private collection.
  • Picture of a blue-faced parrotfinch (Erythrura trichroa) from a private collection.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild)
  • Coyote puppies (Canis latrans).
  • Photo: A pair of stick insects (Manduria halconensis) at Zoo Plzen.
  • Tiger-striped treefrog (Phyllomedusa tomopterna) at the National Aquarium in Baltimore.
  • Photo: An Algerian ribbed newt (Pleurodeles nebulosus) at Aquarium Berlin.
  • Photo: Underside of a Mozambique girdled lizard [Smaug mossambicus) at the Sedgwick County Zoo.
  • Picture of a panther chameleon (Furcifer pardalis) at the Lincoln Children's Zoo.
  • A king penguin (Aptenodytes patagonicus patagonicus) at the Omaha Zoo.
  • Photo: A male Philippine robin (Copsychus mindanensis) on Semirara Island in the Philippines.
  • Photo: Northern straight-mouth nase or Douro nase, (Pseudochondrostoma duriense) at the Environmental Education Center of the Ribeiras de Gaia.
  • Photo: A blue eyed cockatoo (Cacatua ophthalmica) at the Jurong Bird Park.
  • Picture of a pygmy or anthill python (Antaresia perthensis) at the St. Augustine Alligator Farm.
  • Picture of a Rankin's dragon (Pogona henrylawsoni) from a private collection.
  • Photo: A silver-eyed cat gecko (Aeluroscalabotes felinus) at Conservation Fisheries.
  • A bull trout (Salvelinus confluentus) from Bighorn Creek, part of the Kootenay River system. (IUCN: Vulnerable; US: Federally threatened)
  • Photo: An eastern bobwhite quail (Colinus virginianus virginianus) named ‘Quailman’ at the Brevard Zoo.
  • An endangered (IUCN) and federally endangered bonobo (Pan paniscus) at the Columbus Zoo.
  • Photo: East African spring hare (Pedetes surdaster) at the Plzen Zoo in the Czech Republic.
  • Photo: Yellow-bibbed lory (Lorius chlorocercus) in Choussy, France.
  • Photo: Belize yellow headed amazon (Amazona oratrix beliziensis) at Loro Parque Fundacion.
  • Photo: Yellow faced Amazon, Alipiopsitta xanthops, at Loro Parque Fundacion.
  • Picture of a four-week old, male leopard cat (Prionailurus bengalensis chinensis).
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • A studio portrait of a six-lined racerunner (Aspidoscelis sexilneatus sexlineatus) from the Ozarks of southern Missouri.
  • Photo: Two-month old yellow-faced turtles (Emydura tanybaraga) at the Oklahoma City Zoo.
  • Picture of an endangered white fronted capuchin (Cebus versicolor) at the Summit Municipal Park in Gamboa, Panama.
  • A mallard (Anas platyrhynchos) duckling.
  • A female Mt. Kilimanjaro two-horned chameleon or dwarf Fischer's chameleon (Kinyongia tavetana) from Omaha Henry Doorly Zoo
  • Photo: Indian hog deer (Hyelaphus porcinus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A swan goose (Anser cygnoides) at the Miller Park Zoo. This species is listed as vulnerable on the IUCN Red List.
  • Picture of a pink-tongued skink (Hemisphaeriodon gerrardii) at the Healesville Sanctuary.
  • Photo: A mottled rock rattlesnake (Crotalus lepidus lepidus) at Reptile Gardens.
  • Picture of a Great Lakes bush viper/sedge viper (Atheris nitschei) at the Dallas Zoo.
  • Indian tent turtle (Kachuga tentoria) at the Tennessee Aquarium.
  • Picture of an Eastern long-nosed viper (Vipera ammodytes meridionalis) at the St. Louis Zoo.
  • Photo: A barn swallow (Hirundo rustica rustica) at Hessilhead Wildlife Rescue.
  • Picture of a row of critically endangered ploughshare tortoises (Astrochelys yniphora) at Zoo Atlanta.
  • A male mimic poison frog (Ranitomeya imitator) with a single tadpole on his back, from a private collection.
  • Photo: A walleye surfperch (Hyperprosopon argenteum) at California Science Center in Los Angeles, California.
  • Bridled white-eye (Zosterops saypani) at the Sedgwick County Zoo. This species is listed on IUCN as Endangered.
  • Photo: Beetle (Pasimachus elongatus) at Cedar Point Biological Station.
  • Picture of an endangered female Bengal tiger (Panthera tigris tigris) at Alabama Gulf Coast Zoo.
  • Photo: Blue haliclona sponge (Haliclona sp.) at Butterfly Pavilion.
  • Picture of a black vulture (Coragyps atratus) at Sylvan Heights Waterfowl Park.
  • Picture of a ribbon snake (Thamnophis sauritus) at the New York State Zoo in Watertown, NY.
  • Photo: Moluccan king parrot (Alisterus amboinensis amboinensis) at Loro Parque Fundacion
  • Photo: Two batman bugs or Moapa Warm Springs naucorid (Limnocoris moapensis) at Warm Springs Natural Area, Upper Muddy River, NE Clark County, Nevada.
  • A federally threatened spectacled caiman (Caiman crocodilus crocodilus) at Omaha's Henry Doorly Zoo.
  • An elderly black lemur (Eulemur macaco) at the Bramble Park Zoo, Watertown, South Dakota. (IUCN: Vulnerable)
  • A gray rat snake (Pantherophis obsoleta spiloides)at the Estuarium in Dauphin Island, AL.
  • Picture of Coolio, a vulnerable yellow-shouldered amazon parrot (Amazona barbadensis) at Alabama Gulf Coast Zoo.
  • Photo: Waved sphinx moth (Ceratomia undulosa) at Cedar Point Biological Station.
  • Coyote puppies (Canis latrans).
  • A Malaysian spotted tree frog (Theloderma pictum) from a private collection.
  • Eastern indigo snake, Drymarchon corais couperi, at the Toledo Zoo. This species is federally threatened.
  • A red-crested cardinal (Paroaria coronata) at the Omaha Henry Doorly Zoo, in Omaha, Nebraska.
  • Photo: Figeater beetle (Cotinis mutabilis) at the Sacramento Zoo.
  • A honey badger (Mellivora capensis) at the Fort Wayne Children's Zoo.
  • Photo: Pulsing pom pom xenia (Cespitularia sp.) at Butterfly Pavilion.
  • Photo: Aesculapian ratsnake (Zamenis longissimus) at Wroclaw Zoo.
  • Photo: Northern white-lipped mud turtle (Kinosternon leucostomum leucostomum) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A flower beetle (Eudicella euthalia bertherandi) at Aquarium Berlin.
  • Japanese pond turtle (Mauremys japonica) at the Tennessee Aquarium.
  • A meadow vole (Microtus pennsylvanicus pennsylvanicus) from Watertown, New York.
  • Photo: European honey buzzard (Pernis apivorus) from the Budapest Zoo.
  • Photo: Triceratops beetle (Phileurus truncatus) at the Insectarium in New Orleans.
  • Photo: Mexican hogfish (Bodianus diplotaenia) photographed at Downtown Aquarium in Denver, Colorado.
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