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 46,854-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 14,005 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 degu (Octodon degus) at the Sunset Zoo.
  • An endangered white-crowned hornbill (Berenicornis comatus), named Raja at the St. Augustine Alligator Farm. Genus for the white-crowned hornbill vacillates between Aceros comatus and Berenicornis comatus.
  • Photo: Juvenile Longfin smelt (Spirinchus thaleichthys) at the Fish Conservation and Culture Lab in Byron, CA at UC Davis.
  • Photo: A female Faeroe Island eider (Somateria mollissima faeroeensis) at Lundi Farm in Verl, Germany.
  • Photo: An endangered crested capuchin (Sapajus robustus) at the Los Angeles Zoo.
  • Photo: Cobalt winged parakeet (Brotogeris cyanoptera gustavi) at Loro Parque Fundacion.
  • Wood frog (Lithobates sylvaticus or Rana sylvatica) at the National Aquarium in Baltimore.
  • A Javan leopard cat (Prionailurus javanensis javanensis) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Photo: A pair of elegant quail (Callipepla douglasii) from a private collection.
  • Photo: A five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea.
  • A critically endangered (IUCN) and federally endangered Bali starling (Leucopsar rothschildi) at the Houston Zoo. This bird persists outside of captivity only because captive bred individuals have continued to be released into the wild.
  • Photo: A green mountain frog (Odorrana livida) at Petra Aqua.
  • Photo: Saddled bichir (Polypterus Endlicheri) at the Moscow Zoo.
  • Picture of an endangered (IUCN) and federally endangered six-day-old Malayan tapir (Tapirus indicus) at the Minnesota Zoo.
  • Photo: A ripsaw catfish (Oxydoras niger) at the Oklahoma City Zoo.
  • A picture of a splendorous hornet handmaiden moth (Euchromia folletii) from Bioko Island, Equatorial Guinea. This moth is a wasp mimic
  • Photo: A boomslang (Dispholidus typus) at Reptile Gardens.
  • A picture of a white-footed mouse (Peromyscus leucopus noveboracensis) at the New York State Zoo.
  • A federally endangered Cape Sable seaside sparrow, Ammodramus maritimus mirabilis. This bird is down to about 2,000 individuals and declining, with nearly all found within Everglades National Park in south Florida.
  • Photo: A female African hawk-eagle (Aquila spilogaster) at Zoopark Zajezd.
  • Picture of a federally endangered Andean condor (Vultur gryphus) at the Lowry Park Zoo.
  • Yellow-necked francolin (Pternistis leucoscepus) at Safari Park Dvur Kralove.
  • Photo: Tasmanian yellow tailed black cockatoo (Calyptorhynchus funereus xanthanotus) at Loro Parque Fundacion.
  • Photo: Teays River crayfish (Cambarus sciotensis) from the wild.
  • A stubfoot toad (Atelopus limon) infected with chytrid fungus at a lab in Quito, Ecuador. (IUCN: Critically Endangered)
  • Photo: Two Bosnian alpine newts (Mesotriton alpestris reiseri) at WWT Slimbridge in England.
  • Solomon Islands ground skink (Eugongylus albofasciolatus) at the Detroit Zoo.
  • Photo: A studio portrait of a cricket at Healesville Sanctuary
  • Picture of an Eastern water dragon (Physignathus lesueurii lesueurii) at the Wild Life Sydney Zoo.
  • Western toad (Anaxyrus boreas) at the Sunriver Nature Center in Deschutes County, OR.
  • Photo: A cottontop tamarin (Saguinus oedipus) photographed at the Alexandria Zoological Park in Alexandria, Louisiana.
  • Nene geese (Branta sandvicensis) at the Great Plains Zoo, Sioux Falls, South Dakota. (IUCN: Vulnerable; US: Endangered)
  • Photo: A European quail (Coturnix coturnix coturnix) at Zoo Plzeň.
  • Photo: Jardine parrot, Poicephalus gulielmi gulielmi, at Loro Parque Fundacion.
  • 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: Eel-tailed catfish (Tandanus tandanus) at Templestowe College
  • Photo: A striped ground squirrel (Euxerus erythropus) photographed at the Arabia’s Wildlife Centre.
  • Photo: A flatwoods creekshell mussel (Strophitus williamsi) from the Choctawhatchee River drainage photographed with the USFWS. This animal was collected from Bruce Creek, Walton County, FL.
  • A corn snake (Elaphe guttata) at the Riverside Zoo.
  • Photo: An Adelie penguin (Pygoscelis adeliae) at the Faunia zoo in Madrid, Spain.
  • Blackside darter (Percina maculata) at the Minnesota Dept. of Natural Resources Center for Aquatic Mollusk Programs.
  • A group of Augochlorine green sweat bees (Augochlorirni) photographed at a studio in Lincoln, NE.
  • Photo: A red-legged kittiwake (Rissa brevirostris) at the Alaska SeaLife Center.
  • Photo: A male Roatán spinytail iguana (Ctenosaura oedirhina) at IguanaLand in Punta Gorda, Florida.
  • Photo: Gambian giant pouched rat (Cricetomys gambianus) in the Kids ZooU section of the Philadelphia Zoo.
  • Picture of a male greater scaup (Aythya marila) at Sylvan Heights Bird Park.
  • Photo: A sly crayfish (Procambarus versutus) at the Fish Biodiversity Lab at Auburn University.
  • Photo: Oncilla (Leopardus tigrinus pardinoides) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: Roundtail chub, Gila intermedia, photographed at Phoenix Zoo.
  • Crested caracara (Caracara cheriway) at Tampa's Lowry Park Zoo.
  • Photo: Several eggs of the Florida applesnail (Pomacea paludosa) at Gulf Specimen Aquarium in Panacea, FL. This species is in decline due to being out-competed by introduced, invasive snails from other countries.
  • Photo: A man walks through the immersive gallery featuring 5,000 Photo Ark images at the Xposure 2022 International Photography Festival in Sharjah, United Arab Emirates.
  • Photo: A ruby throated bulbul (Pycnonotus dispar) at the Plzen Zoo.
  • A red-legged brown dart frog (Silverstoneia flotator). The photo was taken at the National Aquarium in Baltimore.
  • Photo: Inca stone fish (Tahuantinsuyoa macantzatza) at L'aquarium tropical du palais de la Porte DorŽe.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • Photo: A magnolia warbler (Setophaga magnolia) near Hudson, Wisconsin, USA.
  • Two cape sparrows (Passer melanurus) at Safari Park Dvur Kralove. The male has black chest and face.
  • Malaysian horned leaf frog (Megophrys nasuta) from a private collection.
  • Andean marsupial tree frog (Gastrotheca rhiombabae) at the Omaha Zoo.
  • Photo: A Henderson's anole (Anolis hendersoni) at the Plzen Zoo in the Czech Republic.
  • An old world harvest mouse (Micromys minutus) at the Omaha Zoo.
  • Dabb spiny-tailed lizard (Uromastyx acanthinura) at the Fort Worth Zoo.
  • Photo: Apollo sharkminnow (Luciosoma spilopleura) at Zoo Negara.
  • Photo: Pacific lamprey (Entosphenus tridentatus) at the MK Nature Center in Boise, Idaho.
  • Picture of a white-cheeked pintail (Anas bahamensis) at Sylvan Heights Bird Park.
  • Photo: Three 20-day-old fledgling Florida grasshopper sparrows (Ammodramus savannarum floridanus) at White Oak Conservation Center, Yulee, Florida.
  • Lace monitor or lace goanna (Varanus varius) at the Healesville Sanctuary in Healesville, Victoria, Australia
  • Photo: Crested serpent eagle (Spilornis cheela burmanicus) at ACCB in Siem Reap, Cambodia.
  • A vulnerable macaroni penguin (Eudyptes chrysolophus) at the Omaha Zoo.
  • Photo: A Carolina grasshopper (Dissosteira carolina) found at Spring Creek Prairie.
  • Photo: A tailless tenrec (Tenrec ecaudatus) at Bahitoo Farm in Abu Dhabi, United Arab Emirates.
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at Josh’s Frogs in Owosso, Michigan.
  • Picture of two critically endangered spider tortoises (Pyxis arachnoides arachnoides) at the Houston Zoo.
  • Photo: A Brazilian aeolid nudibranch (Spurilla braziliana) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A silver king shoemaker butterfly (Archaeoprepona demophoon) at the Butterfly Pavilion in Westminster, Colorado.
  • Photo: An Afghan tortoise (Testudo horsfieldii kazachstanica) at Prague Zoo.
  • A southern three-banded armadillo (Tolypeutes matacus) at the Lincoln Children's Zoo, Lincoln, Nebraska. (IUCN: Near Threatened)
  • Photo: A pentabanded croaking frog (Scinax quinquefasciatus) at Centro Jambatu in Quito, Ecuador.
  • A common Myna or Indian Myna, (Acridotheres tristis tristis) from a private collection.
  • Picture of a South African large-spotted genet (Genetta tigrina) at the Cincinnati Zoo.
  • Guatemalan beaded lizard (Heloderma horridum charlesbogerti) at Zoo Atlanta. This is believed to be the rarest lizard in the world, with a possible wild population of six animals and fewer than 20 in captivity.
  • Photo: An American crow (Corvus brachyrhynchos hesperis) at the Big Bear Alpine Zoo.
  • Photo: Domergue's leaf chameleon (Brookesia thieli) at a private collection in Gainesville, Florida.
  • Photo: A white-throated sparrow (Zonotrichia albicollis) near Hudson, Wisconsin, USA.
  • An endangered Malayan tiger (Panthera tigris jacksoni) at the Omaha Zoo.
  • New Mexico spadefoot toad (Spea multiplicata) at the Arizona-Sonora Desert Museum.
  • A juvenile and adult Wagler's temple viper (Trimeresurus wagleri) at the Fort Worth Zoo.
  • Photo: A song thrush (Turdus philomelos philomelos) at the Plzen Zoo in the Czech Republic.
  • Photo: An endangered Madagascar pond heron (Ardeola idae) at the Plzen Zoo in the Czech Republic.
  • Photo: A Pichincha robber frog (Pristimantis parvillus) from a cloud forest reserve near Mindo, Ecuador.
  • Photo: Unidentified Grub, potentially of the rhino beetle variety, at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • A female yellow-throated vireo (Vireo flavifrons) at the Brown Ranch, Texas.
  • Photo: Bluebanded or stripefin ronquil (Rathbunella hypoplecta) at Ripley's Aquarium of Canada.
  • Photo: A black-banded owl (Ciccaba huhula albomarginata) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: A broomtail wrasse (Cheilinus lunulatus) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • A picture of a sacred kingfisher (Todiramphus sanctus sanctus) at Healesville Sanctuary.
  • Photo: A whiting-pout (Trisopterus luscus) at the Littoral Station of Aguda, Portugal.
  • Photo: A mimic poison frog (Ranitomeya imitator) at Josh’s Frogs in Owosso, Michigan.
  • Photo: Red squirrel (Tamiasciurus hudsonicus) at the Alaska Zoo.
  • Photo: An endangered Cumberland monkeyface (Theliderma intermedia) photographed at the Aquatic Wildlife Conservation Center.
  • Photo: An undescribed thickskin cichlid (Haplochromis species # 44) from a private collection.
  • Picture of a federally endangered Ozark hellbender (Cryptobranchus alleganiensis bishopi), infected with chytrid fungus, at the St. Louis Zoo, St. Louis, Missouri.
  • A male wrinkled hornbill (Rhabdotorrhinus corrugatus) at the Houston Zoo.
  • Photo: A black mamba (Dendroaspis polylepis) at Omaha's Henry Doorly Zoo and Aquarium.
  • A squirrel tree frog (Hyla squirella) at the Vancouver Aquarium.
  • Picture of an iridescent lilliput (Toxolasma paulum) collected from the Ochlockonee River near Tallahassee, Florida.
  • Photo: A red-eared slider (Chrysemys scripta) at the Kansas City Zoo.
  • A picture of a critically endangered male saulosi cichlid (Chindongo saulosi) from a private collection.
  • Picture of an endangered six-month-old western red panda (Ailurus fulgens fulgens) named Cinnamon at the Virginia Zoo.
  • Pahu, the Bornean rhinoceros (Dicerorhinus sumatrensis harrissoni) at the Kelian Sumatran Rhino Sanctuary in Indonesia. This species is listed as critically endangered and the population is in decline.
  • Photo: A metallic pigeon (Columba vitiensis griseogularis) at the Plzen Zoo in the Czech Republic.
  • Picture of an endangered Louisiana pine snake (Pituophis melanoleucus ruthveni) at the Sedgwick County Zoo in Wichita, Kansas
  • Photo: A scarlet-faced liocichla (Liocichla ripponi) at Riverbanks Zoo and Garden.
  • Photo: A critically endangered Lake Oku clawed frog (Xenopus longipes) at the London Zoo.
  • Photo: Alborella (Alburnus arborella) at Alpenzoo in Innsbruck, Austria.
  • Photo: Four different species of forest snails at the University of the Philippines.
  • Red-bellied short-necked turtle (Emydura subglobosa) at the Lincoln Children's Zoo.
  • Photo: Dracula, a critically endangered Golden-bellied capuchin (Cebus xanthosternos) at the Lisbon Zoo
  • A Pueblan milk snake (Lampropeltis triangulum campbelli) at the Denver zoo.
  • A pocket mouse (Chaetodipus sp.) at the Omaha Zoo.
  • Photo: Galaxy rasbora (Danio margaritatus) from a private collection.
  • Photo: Pink-bellied imperial pigeon (Ducula poliocephala) at the Avilon Zoo.
  • Photo: A one-month-old Hoffmann’s two-toed sloth (Choloepus hoffmanni pallescens) at Centro de Rescate Amazonico near Iquitos, Peru.
  • Picture of an endangered (IUCN) and federally endangered Grand Cayman blue iguana (Cyclura lewisi) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: Two Western hercules beetles (Dynastes hercules hercules) at the Houston Zoo.
  • Photo: A Hajar Lotak (Cyprinion muscatense) photographed at the Arabia’s Wildlife Centre.
  • Photo: Visayan leopard cat (Prionailurus bengalensis rabori) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • Photo: A unidentified giant stonefly nymph (Pteronarcys sp.) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Seven Springs, Pennsylvania.
  • The bottom side of a Mississippi mud turtle (Kinosternon subrubrum hippocrepis) at Millard's Turtle Farm, Birmingham, Iowa.
  • Photo: Critically endangered citron crested cockatoos (Cacatua sulphurea citrinocristata) at Jurong Bird Park.
  • Photo: A Texas spiny lizard (Sceloporus olivaceus) at Nebraska Wildlife Rehab.
  • Photo: A South American puffing snake (Pseustes sulphureus) at the Brevard Zoo.
  • Photo: A male bronze anole (Anolis aeneus) at Josh’s Frogs in Michigan.
  • Picture of a brown pelican (Pelecanus occidentalis) at the Santa Barbara Wildlife Care Network.
  • A vulnerable (IUCN) and federally endangered Mandrill (Mandrillus sphinx) at the Gladys Porter Zoo.
  • An endangered (IUCN) and federally endangered Alabama red-bellied turtle (Pseudemys alabamensis) at the Tennesee Aquarium.
  • Photo: Six-eyed sand spider (Sicarius hahni) at the Bugarium at the Albuquerque BioPark.
  • A big brown bat (Eptesicus fuscus fuscus) at Nebraska Wildlife Rehab.
  • Photo: An American toad (Anaxyrus americanus) at the Genoa National Fish Hatchery in Genoa, Wisconsin.
  • El Segundo flower-loving fly (Rhaphiomidas terminatus terminatus). This insect was thought to be extinct since the end of the 1960s but a small remnant population of less than 100 individuals was discovered in the early 2000s.
  • Photo: A North American deer mouse (Peromyscus maniculatus luteus) photographed at Platte River Prairies, Woodriver, Nebraska.
  • A bordered patch butterfly (Chlosyne lacinia) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A male critically endangered southern helmeted curassow (Pauxi unicornis) at the Dallas World Aquarium.
  • Photo: A northern water snake (Nerodia sipedon) from a private collection.
  • Picture of a three-toed amphiuma (Amphiuma tridactylum) at the Saint Louis Zoo.
  • Picture of a row of critically endangered ploughshare tortoises (Astrochelys yniphora) at Zoo Atlanta.
  • A Honduran milk snake (Lampropeltis triangulum hondurensis) at the Sedgwick County Zoo.
  • Picture of an Eastern collared lizard (Crotaphytus collaris) at the Saint Louis Zoo.
  • Picture of a pair of Texas white-tailed deer (Odocoileus virginianus texanus) at the Caldwell Zoo in Tyler, Texas.
  • Picture of a male common shelduck (Tadorna tadorna) at Sylvan Heights Bird Park.
  • Photo: Large rose beetle (Potosia aeruginosa) at the Budapest Zoo.
  • Photo: A common raven (Corvus corax sinuatus) at the Wildlife Rehab Center of Minnesota (WRCMN). This bird had broken its wing and was wearing a splint to help it heal.
  • Photo: A grey-headed bushshrike (Malaconotus blanchoti hypopyrrhus) collected at Chitengo Camp in Gorongosa National Park.
  • Photo: A Guenther's mouthbrooder (Chromidotilapia guntheri) at the Berlin Zoological Garden in Berlin, Germany.
  • Photo: Sun beetle (Pachnoda marginata marginata) at the Budapest Zoo.
  • Photo: Big Blue Spring cave crayfish (Procambarus horsti), one of four petitioned crayfish, found in Jefferson and Leon Counties in NW Florida.
  • Photo: A common grey peacock-pheasant (Polyplectron bicalcaratum bicalcaratum) at the Wadi Al Safa Wildlife Center in Dubai, United Arab Emirates.
  • Photo: A group of rubber ducky isopods (Cubaris sp.) at Josh’s Frogs in Owosso, Michigan.
  • Photo: Flower beetle (Mecynorhina torquatta ugandensis) at the Budapest Zoo.
  • Photo: A small blue grecian (Heliconius sara sprucei) at the Butterfly Pavilion.
  • Photo: Stick insect (Sipyloidea biplagiata) at the Moscow Zoo.
  • Picture of a Brazilian free-tailed bat (Tadarida brasiliensis mexicana) at Night Wings Inc., in Lubbock, Texas.
  • Photo: An endangered female East African crowned crane (Balearica regulorum gibbericeps) at the Memphis zoo in Tennessee.
  • Picture of a vulnerable male blue-winged goose (Cyanochen cyanoptera) at Sylvan Heights Bird Park.
  • Photo: A sand fox (Vulpes rueppellii sabaea) photographed at the Arabia’s Wildlife Centre.
  • Picture of a naked mole-rat (Heterocephalus glaber) at the Saint Louis Zoo.
  • Photo: A Tennessee darter (Etheostoma tennesseense) photographed at Conservation Fisheries.
  • Picture of a Central Brazilian rattlesnake (Crotalus durissus terrificus) at the Oklahoma City Zoo.
  • Picture of an endangered Southern yellow-cheeked gibbon (Nomascus gabriellae) at the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam.
  • An endangered robber frog (Eleutherodactylus eugeniae) near Mindo, Ecuador.
  • Photo: A Mentanani scops owl (Otus mantananensis romblonis) on Semirara Island in the Philippines.
  • Photo: A lake sturgeon (Acipenser fulvescens) at the Genoa National Fish Hatchery.
  • Picture of a white-faced ibis (Plegadis chihi) named Gonzo at The Living Desert in Palm Desert, California.
  • Picture of a Eurasian lynx (Lynx lynx) at the Columbus Zoo.
  • A black spine-neck swamp turtle (Acanthochelys spixii) at the Houston Zoo.
  • Dunes sagebrush lizard (Sceloporus arenicolus) at the Albuquerque BioPark Aquarium.
  • A critically endangered Anderson's salamander (Ambystoma andersoni) at Zoo Atlanta.
  • Picture of a harlequin poison frog (Oophaga histrionica) Buenaventura, Columbia locality, from a private collection.
  • Photo: A leaf beetle (Chrysolina Americana) at the Biodiversity Hall of Natural History and Science Museum.
  • Western scrub-jay (Aphelocoma californica) 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: Jefferson, a woodhouse's toad (Anaxyrus woodhousii) photographed at Schramm Education Center, Gretna, Nebraska.
  • A picture of a Finlayson's squirrel (Callosciurus finlaysonii bocourti) at Singapore Zoo.
  • A katydid/grasshopper that has adapted to mimic foliage on Bioko Island, Equatorial Guinea.
  • Photo: A striped killifish (Fundulus majalis) at the Virginia Aquarium.
  • Picture of a western lesser siren (Siren intermedia nettingi) at the Saint Louis Zoo.
  • Photo: New Guinea snake-necked turtle (Chelodina novaeguineae) at the San Antonio Zoo.
  • Photo: A male Pennsylvania funnel web spider (Agelenopsis pennsylvanica) from Lincoln, Nebraska.
  • A picture of a group of chinstrap penguins (Pygoscelis antarctica) at the Newport Aquarium.
  • Picture of Tara, a brown parrot (Poicephalus meyeri) at Alabama Gulf Coast Zoo.
  • Photo: Pearly razorfish (Xyrichtys novacula) at the Albuquerque BioPark Aquarium.
  • Photo: A Vietnamese tiger tarantula (Cyriopagopus longipes) from the wild in Cambodia.
  • A wild turkey (Meleagris gallopavo) at the Great Plains Zoo.
  • Photo: A male wolf spider (Schizocosa aulonia) from the University of Nebraska-Lincoln.
  • Balkan wall lizard (Podarcis tauricus) at Wroclaw Zoo.
  • Picture of a Vietnamese sika deer (Cervus nippon pseudaxis) at the Oklahoma City Zoo.
  • Photo: Balkan loach (Cobitis elongata) at Alpenzoo in Innsbruck, Austria.
  • Photo: A painted carpet viper (Echis coloratus terraesanctae) at Wildlife Hospital of Israel & Ramat Gan Safari Park, in Ramat Gan, Israel.
  • Picture of a federally endangered and vulnerable (IUCN) nene goose, Branta sandvicensis, at Sylvan Heights Bird Park.
  • Photo: An eastern screech owl, (Megascopes asio), at a raptor recovery center near Lincoln, NE.
  • Photo: Andean parakeet (Bolborhynchus orbygnesius) at Loro Parque Fundacion.
  • Sanguine poison frog (Allobates zaparo) from a private collection.
  • Photo: Crystal shrimp (Caridina cantonesis) locality China/Hong Kong, from a private collection.
  • Photo: An inland taipan (Oxyranus microlepidotus) at Reptile Gardens.
  • Picture of a male redhead duck (Aythya americana) at the Sylvan Heights Bird Park
  • Photo: A cryptic kelp crab (Pugettia richii) at California Science Center in Los Angeles, California.
  • Sicklefin redhorse fish (Moxostoma sp. "sicklefin redhorse") a rare and undescribed species of redhorse found only in the Blue Ridge section of the Little Tennessee River and Hiwassee River. Photographed at Conservation Fisheries, a breeding center for rare native stream fish.
  • Photo: Bearded vulture (Gypaetus barbatus) at Parco Natura Viva.
  • 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: A male Bay Island least gecko (Sphaerodactylus rosaurae) at Josh’s Frogs in Michigan.
  • Photo: A reticulated poison frog (Ranitomeya ventrimaculata) at Josh’s Frogs in Owosso, Michigan.
  • Picture of a spot-tailed earless lizard (Holbrookia lacerata lacerata) at the Fort Worth Zoo.
  • A picture of a scarab beetle species (Oryctomorphus bimaculatus) at Fauna Andina, a conservation center near south-central Chile.
  • Picture of a vulnerable lined seahorse (Hippocampus erectus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A banded killifish (Fundulus cingulatus) at Joe Budd Wildlife Management Area near Quincy, FL.
  • Photo: A many-banded krait (Bungarus multicinctus) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • Photo: A tinging poison frog (Dendrobates tinctorius) Koetari form, photographed at the Amphibian Foundation in Atlanta, Georgia.
  • A male black-bellied brent goose (Branta bernicla nigricans) at WWT Slimbridge in England.
  • Photo: Arctic char (Salvelinus alpinus) photographed at Downtown Aquarium in Denver, Colorado.
  • Photo: A naked mole rat (Heterocephalus glaber) at the Lincoln Children's Zoo.
  • A young female snowy owl (Bubo scandiacus).
  • Picture of a Greater sandhill crane (Grus canadensis tabida) at Tracy Aviary.
  • Photo: A cape fox (Vulpes chama) at the Plzen Zoo.
  • Photo: An white-bellied bustard (Eupodotis senegalensis) at Parque Biologico.
  • Photo: A critically endangered Lord Howe Island stick insect (Dryococelus australis) at the Melbourne Zoo.
  • Picture of two Venezuelan Troupials (Icterus icterus) at the Houston Zoo.
  • Picture of a male ashy-headed goose, Chloephaga poliocephala, at Sylvan Heights Bird Park.
  • A picture of a pair of vulturine guineafowl, Acryllium vulturinum at the Lincoln Children's Zoo.
  • A picture of a frog eyed or common wonder gecko (Teratoscincus scincus rustamovi) at the Plzen Zoo.
  • The southeastern lubber grasshopper (Romalea microptera) at Santa Fe Community College Teaching Zoo.
  • Photo: A Peters' banded skink (Scincopus fasciatus) at Petra Aqua.
  • Photo: Blossom headed parakeet, Psittacula roseata juneae, at Loro Parque Fundacion.
  • 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.
  • Picture of a scarlet kingsnake (Lampropeltis elapsoides) at the Knoxville Zoo.
  • A common five-lined skink (Plestiodon fasciatus) collected from the Conasauga River.
  • Photo: An endangered Sacramento perch (Archoplites interruptus) at East Bay Regional Park District.
  • Photo: Northern clearwater crayfish, Faxonius propinquus, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from Erie Basin, PA.
  • A small-mouthed salamander (Ambystoma texanum) from a private collection.
  • Photo: Sanibel Island marsh rabbit (Sylvilagus palustris paludicola) from Sanibel Island.
  • A king penguin (Aptenodytes patagonicus patagonicus) at the Omaha Zoo.
  • A picture of a Pyrenean desman (Galemys pyrenaicus) photographed on the grounds of the Symington Estates in
  • Photo: A male crimson-hooded manakin (Pipra aureola) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: White-fronted woodpecker (Melanerpes cactorum) in Choussy, France.
  • Photo: A yellow-legged frog (Rana boylii) from the Oakland Zoo. This species is listed as near threatened by IUCN.
  • Picture of a sara longwing (Heliconius sara sara) at the Saint Louis Zoo.
  • Photo: A gray tree frog (Hyla versicolor) at the aquarium at Gavins Point National Fish Hatchery.
  • A banded rubber frog (Phrynomantis bifasciatus) at Reptile Gardens.
  • Photo: Brimstone canary (Serinus sulphuratus) in Santa Cruz, Tenerife, Spain.
  • Photo: Barbary striped grass mouse (Lemniscomys barbarus) at the Budapest Zoo.
  • Photo: A South African Nile crocodile (Crocodylus niloticus cowiei) at the Dubai Safari Park in Dubai, United Arab Emirates.
  • Photo: A blue-barred parrotfish (Scarus ghobban) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • Photo: A Mabee’s salamander (Ambystoma mabeei) at the North Carolina Zoo in Asheboro, North Carolina.
  • Photo: A soybean plant (Glycine max) faces off against a roundup-resistant horseweed plant at the University of Nebraska's East Campus.
  • Picture of a yellow-spotted wrasse (Macropharyngodon negrosensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • A dingo or warrigal (Canis lupus dingo).
  • A picture of an American kestrel (Falco sparverius sparverius) at the Bramble Park Zoo.
  • A Mexican milksnake (Lampropeltis triangulum annulata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A European common cuttlefish (Sepia officinalis) at Riverbanks Zoo and Garden.
  • Photo: A northern alligator lizard (Elgaria coerulea shastensis) from a private collection in Billerbeck, Germany.
  • Picture of a spotless ladybug, Cycloneda sanguinea, collected in the wild near Salt Lake City, Utah.
  • Photo: Reef butterflyfish (Chaetodon sedentarius) at the Dallas Children's Aquarium.
  • Photo: A male banded palm civet (Hemigalus derbyanus derbyanus) at the Nashville Zoo in Tennessee.
  • Photo: A leopard gecko (Eublepharis macularius) at the Buin Zoo.
  • Mearn's eastern cottontail rabbit (Sylvilagus floridanus mearnsii) at Nebraska Wildlife Rehab in Louisville, Nebraska.
  • Photo: An oak titmouse (Baeolophus mexicanus) at Santa Barbara Wildlife Care Network.
  • Photo: Fire eel (Mastacembelus erythrotaenia) at Zoo Negara.
  • Picture of a red-winged pytilia (Pytilia phoenicoptera) from a private collection.
  • Photo: A green sunfish (Lepomis cyanellus) from a private collection in Knoxville, Tennessee.
  • Photo: A nine-armed seastar (Ludia senegalensis) at the St. Lucie County Aquarium.
  • Photo: A Peruvian black-capped squirrel monkey (Saimiri boliviensis peruviensis) at the Pilpintuwasi Butterfly Farm and Amazon Animal Orphanage.
  • Photo: Brown rockfish (Sebastes auriculatus) at East Bay Regional Park District.
  • A half-day-old hatchling leatherback turtle (Dermochelys coriacea) from Bioko Island. (IUCN: Critically Endangered, US: Endangered)
  • Picture of a brown-throated parakeet (Eupsittula pertinax arubensis) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Photo: A male endangered Arabian tahr (Arabitragus jayakari) at the Management of Nature Conservation, Jebel Hafeet, Abu Dhabi, UAE.
  • Photo: Dead-leaf mantis (Deroplatys dessicata) at the Audubon Insectarium in New Orleans.
  • Photo: A pair of unidentified fingernail clams (Sphaerium sp.) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Photo: An emperor scorpion at the Sunset Zoo.
  • A two-week-old, critically endangered (IUCN) Arakan forest turtle (Heosemys depressa) at Zoo Atlanta.
  • Picture of a wood duck (Aix sponsa) at the Lincoln Children's Zoo.
  • An Escuerzo or Budgett's frog (Lepidobatrachus asper) at Zoo Atlanta.
  • A portrait of a federally endangered peregrine falcon (Falco peregrinus).
  • Photo: An Andean fox (Lycalopex culpaeus culpaeus) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • Photo: A scarlet lily beetle (Lilioceris lilii) at the Biodiversity Hall of Natural History and Science Museum.
  • A picture of a Surinam horned frog (Ceratophrys cornuta) as Balsa de los Sapos.
  • Photo: A thick-billed murre (Uria lomvia) named Rudy at the North Carolina Zoo in Asheboro, North Carolina.
  • Photo: A cottontop tamarin (Saguinus oedipus) photographed at the Alexandria Zoological Park in Alexandria, Louisiana.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • A white-breasted nuthatch (Sitta carolinensis).
  • Photo: A Sumatran treepie (Dendrocitta occipitalis) at the Plzen Zoo.
  • A New Guinea singing dog (Canis lupus hallstromi) at the Miller Park Zoo
  • Northern pearly-eye (Enodia anthedon) at Leech Lake, Minnesota.
  • Picture of a prong-billed barbet (Semnornis frantzii) at the Dallas World Aquarium.
  • Picture of a Brazilian whiteknee tarantula (Acanthoscurria geniculata) at the Central Florida Zoo.
  • A juvenile pelagic cormorant (Urile pelagicus resplendens) at the International Bird Rescue Center in San Pedro, CA.
  • Picture of a paradise shelduck (Tadorna variegata) at The Animal Sanctuary, an animal rehab center in Warkworth, New Zealand.
  • Photo: Indiana single flash firefly nymph (Photuris sp.) photographed at Butterfly Pavilion in Westminster, Colorado.
  • Photo: A Southern band-tailed pigeon (Patagioenas (fasciata) albilinea) at the Nashville Zoo in Nashville, Tennessee.
  • Photo: A rex rabbit (known for its soft fur and meat) at the Sunset Zoo in Manhattan, KS.
  • A green and gold brittlestar (Ophiarachna incrassata) at the Indianapolis Zoo.
  • Cave ratsnake (Elaphe taeniura ridleyi) at the Omaha Zoo.
  • Photo: A fox squirrel, Sciurus niger.
  • A silvery-cheeked hornbill (Bycanistes brevis) at Ocean Park in Hong Kong.
  • Photo: A southern rufous hornbill, Buceros mindanensis semigaleatus, at Talarak Foundation.
  • Photo: African grass rat (Arvicanthis niloticus niloticus) at the Plzen Zoo in the Czech Republic.
  • An endangered keeled box turtle (Cuora mouhotii obsti) at the Turtle Conservation Center in Cuc Phuong National Park, Vietnam.
  • Photo: A federally endangered interior least tern (Sterna antillarum athalassos).
  • Photo: A Trinidad stream frog (Mannophryne trinitatis) Shaldon Wildlife Trust in Shaldon, England.
  • Oriental fire-bellied toad (Bombina orientalis) at the Denver Zoo.
  • An aboreal alligator lizard (Abronia graminea) at the San Antonio Zoo. (IUCN: Endangered)
  • Photo: A Madagascar tree boa (Sanzinia volontany) at Prague Zoo.
  • Picture of a Madagascar turtle dove (Streptopelia picturata) at the Houston Zoo.
  • Variable seedeater (Sporophila corvina) at the Sedgwick County Zoo.
  • Photo: Walking stick (Pylamenes guangxiensis) at the Budapest Zoo.
  • Photo: A boat-billed heron (Cochlearius cochlearius cochlearius) at the Prague Zoo.
  • Partula snails (Partula nodosa) at the St. Louis Zoo's Monsanto Insectarium. Once found in French Polynesia, this species is now extinct in the wild.
  • Photo: Ethiopian cricket (Homoeogryllus sp.) at the Budapest Zoo.
  • A European tree frog (Hyla savignyi) at the Houston Zoo.
  • Photo: Bowfin (Amia calva) at the MN DNR Center for Aquatic Mollusk Programs.
  • Photo: Pacific blue mussel (mytilus trossulus) at the Alaska SeaLife Center.
  • Photo: A Palestine mole rat (Spalax ehrenbergi) at Leibniz Institute for Zoo and Wildlife Research.
  • Hall's New Guinea crocodile (Crocodylus halli) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • Photo: A Cape Verde scorpion (Hottentotta caboverdensis) at Verve Biotech in Waverly, Nebraska.
  • Photo: A male, twin-flagged jumping-spider (Anasaitis canosa) at the University of Florida in Gainesville.
  • A federally endangered fanshell (Cyprogenia stegaria) taken from the Clinch River near Sneedville.
  • Photo: A mosaic butterfly (Colobura dirce) at St. Louis Zoo.
  • Photo: A tiger loach (Syncrossus hymenophysa) at the Tennessee Aquarium in Chattanooga, Tennessee.
  • Photo: A female barbary stag or atlas deer (Cervus elaphus barbarus) at Tierpark Berlin.
  • A picture of a red-shouldered hawk (Buteo lineatus lineatus) at the Sutton Avian Research Center.
  • A green tree python (Morelia viridis) at the Riverside Zoo.
  • Borneo sucker (Gastromyzon punctulatus) at Zoo Negara.
  • A picture of a western hooded oriole (Icterus cucullatus) named Squirt at The Living Desert in Palm Desert, California.
  • Photo: A tapered pigtoe mussel (Fusconaia burkei) from the Choctawhatchee River drainage photographed with the USFWS. This animal was collected from Bruce Creek, Walton County, FL.
  • Photo: A Southwestern pond turtle (Actinemys pallida) named Emmy at Lindsay Wildlife Experience in California.
  • Picture of a two-year-old, critically endangered (IUCN) and federally endangered Orinoco crocodile (Crocodylus intermedius) at the Dallas World Aquarium.
  • Picture of a critically endangered Delacour's langur (Trachypithecus delacouri) at the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam.
  • Photo: Red Helen butterfly (Papilio helenus) at the San Antonio Zoo.
  • Photo: An Alaska red king crab (Paralithodes camtschatica) at the Alaska SeaLife Center.
  • Photo: White-bellied snapping turtle (Elseya branderhorstii) at the Singapore Zoo. This species is listed as Vulnerable on IUCN.
  • Photo: An interior tree frog (Dendropsophus melanargyreus) at Josh’s Frogs in Michigan.
  • Picture of an Azure damsel (Chrysiptera hemicyanea) at Nebraska Aquatic Supply.
  • Mustard white butterfly (Pieris oleracea) from a mix of prairie and woodlands near Cross Lake, Minnesota.
  • Photo: A male and female mangrove blue flycatcher (Cyornis rufigastra mindorensis) on Semirara Island in the Philippines.
  • Photo: A common bed bug (Cimex lectularius) at the Urban Entomology Lab at the University of Florida at Gainesville.
  • Photo: Two blacktail bay shrimp (Crangon nigricauda) from San Francisco Bay. Photographed at the East Bay Regional Parks Mobile Education Program.
  • Photo: A sooty falcon (Falco concolor) at the Dubai Falcon Hospital in Dubai, United Arab Emirates.
  • Photo: Zimbabwe girdled lizard (Cordylus rhodesianus) at the Phoenix Zoo.
  • Partula snails (Partula nodosa) at the St. Louis Zoo's Monsanto Insectarium. Once found in French Polynesia, this species is now extinct in the wild.
  • Photo: A green-and-black poison dart frog (Dendrobates auratus) at Josh’s Frogs in Owosso, Michigan.
  • A gray rat snake (Pantherophis obsoleta spiloides)at the Estuarium in Dauphin Island, AL.
  • A picture of a Hispaniolan parakeet (Psittacara chloropterus chloropterus) at Parque Zoologico Nacional, a zoo in Santo Domingo, Dominican Republic.
  • A picture of a striped skunk (Mephitis mephitis varians) at The Wildlife Center in New Mexico.
  • Picture of a Neaves' Whiptail Lizard (Aspidoscelis neavesi) at Omaha's Henry Doorly Zoo.
  • Photo: A scorpion mud turtle (Kinosternon scorpiodes) at the Chapultepec Zoo in Mexico City.
  • Photo: Spur-thighed tortoise (Testudo graeca ibera) at Wroclaw Zoo.
  • Photo: A cunner (Tautogolabrus adspersus) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: Crested serpent eagle (Spilornis cheela burmanicus) at ACCB in Siem Reap, Cambodia.
  • Photo: An Amazon matamata (Chelus fimbriata) photographed at Turtle Island, a turtle research and conservation center.
  • Photo: An orangefin shiner (Notropis ammophilus) from Choctafaula Creek, Chattahoochee River Drainage, Tuskegee National Forest in Alabama.
  • Photo: Two northern shrimp (Pandalus borealis) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: Horned nerite snail (Clithon corona) from a private collection.
  • A picture of a yellow-breasted fruit dove (Ptilinopus occipitalis occipitalis) at the Avilon Zoo.
  • Photo: A checkerboard worm lizard (Trogonophis wiegmanni wiegmanni) from a private collection in Billerbeck, Germany.
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at Josh’s Frogs in Owosso, Michigan.
  • Photo: An American barn owl (Tyto alba guatemalae) at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • Photo: A rummy nose tetra (Hemigrammus rhodostomus) at the Singapore Zoo's River Safari area.
  • Photo: A brambling (Fringilla montifringilla) at Centro Fauna Selvatica "Il Pettirosso".
  • Picture of a diamondback terrapin (Malaclemys terrapin) from a private collection.
  • A picture of a cliff swallow (Petrochelidon pyrrhonota pyrrhonota) at Bay Beach Wildlife Sanctuary.
  • Picture of a Weinland's robber frog (Eleutherodactylus weinlandi) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A Gudalupe stick insect (Lamponius guerini) from the North Florida Wildlife Center.
  • Photo: A black-cheeked tongue fish (Symphurus plagiusa) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Picture of a Southern puffer (Sphoeroides nephelus) at Gulf Specimen Marine Lab and Aquarium.
  • An endangered (IUCN) Golfodulcean poison frog (Phyllobates vittatus) from a private collection.
  • A Madagascar rain frog (Scaphiophryne madagascariensis) at the Omaha Zoo.
  • Picture of a black-ray goby (Stonogobiops nematodes) at Pure Aquariums.
  • Photo: A Koch's day gecko (Phelsuma kochi) at Madagascar Exotics
  • Picture of a Chiloe wigeon (Anas sibilatrix) at the Cincinnati Zoo.
  • Photo: Afghan mouse like hamster (Calomyscus mystax) at the Plzen Zoo in the Czech Republic.
  • Photo: An endangered Kloss's gibbons (Hylobates klossii) at Taman Safari in Bogor, West Java, Indonesia.
  • An Arizona toad (Anaxyrus microscaphus) at the Arizona-Sonora Desert Museum.
  • Photo: A striped Raphael catfish (Platydoras costatus) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Photo: Yellowfin mojarra (Gerres cinereus) at the Albuquerque BioPark Aquarium.
  • A wild caught orangethroat darter (Etheostoma spectabile) in Missouri.
  • Photo: Silver lamprey (Ichthyomyzon unicuspis) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: A male Greater European scaup (Aythya marila marila) at WWT Slimbridge in England.
  • Photo: A female Indochinese southern terrapin (Batagur affinis edwardmolii) at ACCB.
  • Haldeman’s iron clad beetles (Zopherus nodulosus haldemani) at the Dallas Zoo.
  • Photo: A Taylor’s sea hare (Phyllaplysia taylori) from San Francisco Bay. Photographed at the East Bay Regional Parks Mobile Education Program.
  • A dark phase Cairo spiny mouse (Acomys cahirinus cahirinus) from the city of Cairo, at the Plzen Zoo.
  • Photo: Western meadowlark (Sturnella neglecta) at Milford Nature Center.
  • Photo: A Tunisian tortoise (Testudo graeca nabeulensis) at Prague Zoo. This species is listed as vulnerable by IUCN. This animal is the offspring of parents that were confiscated from the pet trade via the Prague Airport.
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A cork bark leaf-tailed gecko (Uroplatus pietschmanni) from a private collection.
  • Photo: A twelve-year-old red-winged blackbird (Agelaius phoeniceus caurinus) named Keller at the Chintimini Wildlife Center in Corvallis, Oregon.
  • Photo: Lesser blue crab (Callinectes similis) at Gulf Specimen Marine Lab.
  • Photo: White-lined chiton (Tonicella insignis) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A male two-headed plains garter snake (Thamnophis radix) from Clay Center, Nebraska.
  • Photo: A plains spadefoot toad (Spea bombifrons) at UNL.
  • Photo: An endangered male Mantanzas least gecko (Sphaerodactylus intermedius) at Josh’s Frogs in Michigan.
  • A studio portrait of a six-lined racerunner (Aspidoscelis sexilneatus sexlineatus) from the Ozarks of southern Missouri.
  • Photo: A ball python (Python regius) at the Memphis Zoo in Tennessee.
  • Picture of a red-toothed triggerfish (Odonus niger) at Pure Aquariums.
  • A picture of a white faced heron (Egretta novaehollandiae novaehollandiae) at the Plzen Zoo.
  • Picture of a zebra paper wasp (Polistes exclamans) at the Dallas Zoo.
  • Photo: Gray hypocolius ( Hypocolius ampelinus) in Choussy, France.
  • A sturgeon chub (Macrhybopsis gelida) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: A male black kalij pheasant (Lophura leucomelanos moffitti) at a private collection.
  • Photo: A feathertail glider (Acrobates pygmaeus).
  • Photo: An iris lorikeet (Psitteuteles iris iris) at the Plzen Zoo in the Czech Republic.
  • Photo: A juvenile armored katydid (Enyaliopsis petersii) at Gorongosa National Park, Mozambique.
  • Picture of a vulnerable Philippine duck (Anas luzonica) at the Sylvan Heights Bird Park.
  • Photo: A Jordan Hebrew deathstalker scorpion (Leiurus hebraeus) at Verve Biotech in Waverly, Nebraska.
  • A picture of a mallard duckling (Anas platyrhynchos platyrhynchos) at Wildlife Rescue Team Inc. in Lincoln, Nebraska.
  • Photo: A pacific banana slug (Ariolimax columbianus) at Northwest Trek Wildlife Park in Eatonville, Washington.
  • Photo: A phantasmal dart frog (Epipediobates tricolor) at the National Aquarium in Baltimore.
  • Photo: Eleanor, a silver-spangled Hamburg chicken at the Soukup farm.
  • Photo: A blue-black grassquit (Volatinia jacarina jacarina) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • A male common genet (Genetta genetta), named Little Guy at the Conservators center.
  • Photo: A twist-necked turtle (Platemys platycephala melanonota) at Huachipa Zoo in Lima, Peru.
  • Photo: A Malayan halfbeak (Dermogenys pusilla) at the Tennessee Aquarium in Chattanooga, Tennessee.
  • A baby ornate box turtle (Terrapene ornata ornata) from a private collection.
  • Photo: A greater forest wallaby (Dorcopsis hageni) from a private collection.
  • A picture of a group of chinstrap penguins (Pygoscelis antarctica) at the Newport Aquarium.
  • Photo: A subadult male bushy-crested hornbill (Anorrhinus galeritus) at Penang Bird Park.
  • Photo: Grey-cheeked parakeet (Brotogeris pyrrhoptera) at a private collection.
  • 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.
  • Picture of an American magpie (Pica hudsonia) at The Wildlife Center in Espanola, New Mexico.
  • A picture of a terrestrial garter snake (Thamnophis elegans elegans) collected in South Dakota.
  • Photo: A male Capercallie (Tetrao urogallus crassirostris) at Alpenzoo in Innsbruck, Austria.
  • Photo: A Moroccan fat-tailed scorpion (Androctonus mauritanicus) at the Safari Land Pet Store.
  • Photo: A green color phase of a Vaillant's frog (Lithobates vaillanti) from the Tapir Valley, Costa Rica.
  • Photo: A yellow sea whip (Pterogorgia citrina) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: A corsac fox (Vulpes corsac) at Zoopark Zajezd.
  • A plush-crested jay (Cyanocorax chrysops) at the Houston Zoo.
  • Solomon Islands ground skink (Eugongylus albofasciolatus) at the Detroit Zoo.
  • Blanchard's cricket frog (Acris crepitans blanchardi) at the Toledo Zoo.
  • Photo: Samar water monitor (Varanus samarensis) from the private collection in San Antonio.
  • Photo: Blue-spotted emperor or Blue-spotted Charaxes (Charaxes cithaeron) at the San Antonio Zoo.
  • Photo: A male variegate darter (Etheostoma variatum) collected from Big Darby Creek near Circleville, OH.
  • Red admiral butterfly (Vanessa atalanta) at Leech Lake, Minnesota.
  • A picture of a curve-billed thrasher (Toxostoma curvirostre palmeri) named Albon at The Living Desert in Palm Desert, California.
  • Photo: A Western creek chubsucker (Erimyzon claviformis) at Conservation Fisheries in Knoxville, Tennessee.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: A pair of critically endangered Costa Rican lemur leaf frogs (Agalychnis lemur) Photographed at the Amphibian Foundation in Atlanta, Georgia.
  • Photo: A double-collared seedeater (Sporophila caerulescens yungae) at Museo De Historia Natural Alcide d'Orbigny, a natural history museum and rare amphibian breeding center in Chocabamba Bolivia.
  • A picture of mallard ducklings (Anas platyrhynchos platyrhynchos) at Wildlife Rescue Team Inc. in Lincoln, Nebraska.
  • Spring peeper (Pseudacris c. crucifer) at the National Aquarium in Baltimore.
  • Photo: A Javan yellow-throated marten (Martes flavigula robinsoni) at the Nashville Zoo in Tennessee.
  • Abbott's cockatoo (Cacatua sulphurea abbotti) at Loro Parque Fundacion.
  • A northern flying squirrel (Glaucomys sabrinus) (three months old, male) at Wildlife Images, a rehabilitation center near Merlin, OR.
  • Photo: Goliath stick insect (Eurycnema goliath) at the Budapest Zoo.
  • Photo: A feathertail glider (Acrobates pygmaeus).
  • Photo: An arboreal snail (Helicostyla lignaria) at the University of the Philippines.
  • Photo: A nose-horned chameleon (Calumma nasutum) in Madagascar.
  • Photo: A Florida cormorant (Phalacrocorax auritus floriduanus) at the Jacksonville Zoo and Gardens, Jacksonville, Florida.
  • Andean burrowing parrot (Cyanoliseus patagonus andinus) at Loro Parque Fundacion.
  • Photo: Golden capped parakeet (Aratinga auricapilla auricapilla) at Loro Parque Fundacion.
  • Photo: Savanna monitor lizard (Varanus exanthematicus) at the Denver Zoo.
  • Picture of an endangered (IUCN) and federally endangered Malayan tapir (Tapirus indicus).
  • Photo: A spike mussel (Eurynaia dilatata) from the St. Croix River near Taylors Falls, Minnesota.
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • A saddle billed stork (Ephippiorhynchus senegalensis) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: Moapa dace (Moapa coriacea) at Warm Springs Natural Area, Upper Muddy River, NE Clark County, Nevada.
  • Photo: A thirteen-lined ground squirrel (Ictidomys tridecemlineatus) at Nebraska Wildlife Rehab.
  • Juvenile Stolzmann's horned frogs, Ceratophrys stolzmanni. This species is listed as vulnerable.
  • A Sahara spiny-tailed lizard (Uromastyx geyri) at Rolling Hills Wildlife Adventure near Salina, Kansas.
  • Picture of a blue and yellow macaw (Ara ararauna) at the Kansas City Zoo.
  • A Choctawhatchee beach mouse (Peromyscus polionotus allophrys) a federally endangered rodent, at the USFWS office in Panama City, FL. This and several other beach mice subspecies are imperiled due to beach development.
  • Photo: Bolivian dwarf beauty tarantula (Cyriocosmus perezmilesi) at Butterfly Pavilion in Westminster, Colorado.
  • A giant rhino beetle grub (Megasoma gyas porioni) at the Budapest Zoo.
  • Picture of a fiery-billed aracari (Pteroglossus frantzii) at the Dallas World Aquarium.
  • A zookeeper holds two larva of the atlas beetle (Chalcosoma atlas) at the Omaha Henry Doorly Zoo.When grown into an adult, this type of beetle is able to lift 850 times its own body weight making it the strongest animal on earth compared to its body weight.
  • Photo: An endangered maleo (Macrocephalon maleo) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: A Linne's two-toed sloth (Choloepus didactylus) at Zoologico de Quito.
  • Streamside rainfrog or Bob's robber frog (Craugastor punctariolus), an endangered species from Central America at Zoo Atlanta.
  • A white-faced whistling duck (Dendrocygna viduata) at the Lincoln Children's Zoo.
  • A southern two-lined salamander (Eurycea cirrigera) at the Riverbanks Zoo, Columbia, South Carolina.
  • A Reeve's Muntjac (Muntiacus reevesi) at the Lincoln Children's Zoo.
  • Photo: A male, Harris's hawk (Parabuteo unicinctus unicinctus) at Zoologico de Quito.
  • Photo: An ailanthus webworm moth (Atteva aurea) in Lincoln, Nebraska.
  • Photo: A one-year-old female East Siberian eagle-owl (Bubo bubo yenisseensis) named Mischka at Cotswold Falconry Centre, Moreton-in-Marsh, England.
  • Picture of an African giant millipede (Archispirostreptus gigas) at Rolling Hills Wildlife Adventure near Salina, Kansas.
  • Photo: An Australian helmeted gecko (Diplodactylus galeatus) from a private collection.
  • Photo: An owl butterfly (Caligo memnon telamonius) at the Butterfly Pavilion.
  • 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.
  • Photo: Silver lamprey (Ichthyomyzon unicuspis) at the University Lab at the University of Minnesota in St. Paul.
  • An endangered Silvery Javan gibbon (Hylobates moloch) at Taman Safari in Bogor, West Java, Indonesia.
  • Photo: A fairy cichlid (Aulonocara jacobfreibergi) at Shirley Aquatics in Wythall, England.
  • Photo: A Javan crested serpent-eagle (Spilornis cheela bido) at Taman Mini Indonesia Indah.
  • Picture of a Uinta ground squirrel (Urocitellus armatus) at the Wildlife Rehabilitation Center of Northern Utah.
  • A Grant’s zebra (Equus quagga boehmi) named Mugambi, which means ‘King’ at the Cheyenne Mountain Zoo.
  • A picture of a Eurasian curlew (Numenius arquata arquata) at Monticello Center in Italy.
  • Photo: A Pacific treefrog (Pseudacris regilla) from San Francisco State University.
  • American lady butterfly (Vanessa virginiensis) at Cross Lake, Minnesota.
  • Photo: Yellow billed Amazon, Amazona collaria, at Loro Parque Fundacion.
  • Photo: A whiptail (Aspidoscelis sp) at Springs Preserve.
  • Photo: A bicolored hawk (Accipiter bicolor bicolor) at Huachipa Zoo in Lima, Peru.
  • Photo: A three-toed box turtle (Terrapene carolina triunguis) from the Houston Zoo.
  • Picture of a regal fritillary (Speyeria idalia) at the Minnesota Zoo.
  • Photo: A southern boubou (Laniarius ferrugineus) collected in Gorongosa National Park in Mozambique, Africa.
  • A Florida box turtle (Terrapene carolina bauri) from a private collection.
  • Northern grasshopper mouse (Onychomys leucogaster) at the Omaha Zoo.
  • Photo: False bombardier beetle (Galerita bicolor) at the Audubon Insectarium.
  • A common rough woodlouse (Porcellio scaber) at Museo De Historia Natural “Alcide d’Orbigny”.
  • Photo: A juvenile, female, Harris's hawk (Parabuteo unicinctus unicinctus) at Zoologico de Quito.
  • Photo: A crescent shiner (Luxilus cerasinus) at the Aquatic Wildlife Conservation Center in Marion, Virginia.
  • A picture of a killifish (Pachypanchax arnoulti) at the Zoological Society of London. This species is very rare and native to Madagascar.
  • A sky-blue poison frog (Hyloxalus azureiventris) from a private collection.
  • Western chorus frog (Pseudacris triseriata) at Fenton Farm.
  • Picture of an Arctic fox (Vulpes lagopus) named Todd, at the Great Bend Brit Spaugh Zoo in Great Bend, Kansas.
  • Picture of a juvenile glaucous-winged gull/western gull hybrid (Larus glaucescens x Larus occidentalis) at the Santa Barbara Wildlife Care Network.
  • Photo: A barbary sheep (Ammotragus lervia) at Parco Natura Viva in Bussolengo, Italy.
  • A Guinea baboon (Papio papio) at the Indianapolis Zoo.
  • Kenya Crested Guineafowl (Guttera pucherani) at the San Antonio Zoo.
  • Photo: A Zarudny’s worm lizard (Diplometopon zarudni) from a private collection in Billerbeck, Germany.
  • Photo: A particoloured flying squirrel (Hylopetes alboniger) at the Moscow Zoo.
  • An inland bearded dragon (Pogona vitticeps) at Sedgwick County Zoo.
  • Sara the endangered (IUCN) and federally endangered whooping crane (Grus americana), at the Audubon Center for Research of Endangered Species.
  • Photo: An adult male northern fulmar (Fulmarus glacialis rodgersii) at International Bird Rescue, a wildlife rehab center north of San Francisco.
  • A picture of a black-capped parakeet (Pyrrhura rupicola sandiae) at Pet Paradise.
  • Vulnerable blackside daces (Chrosomus cumberlandensis) at Conservation Fisheries in Knoxville, Tennessee.
  • Picture of a red-billed duck (Anas erythrorhyncha) at the Sylvan Heights Bird Park.
  • A picture of a violaceous jay (Cyanocorax violaceus violaceus) at Parque Jaime Duque near Bogota, Colombia.
  • Picture of a blue wood shrimp (Atya gabonensis) at Pure Aquariums.
  • Photo: A Turkana mud turtle (Pelusios broadleyi) at Turtle Island.
  • Picture of a Common spiny-tailed iguana (Ctenosaura similis) at the Columbus Zoo.
  • A Masai giraffe (Giraffa camelopardalis tippelskirchi) at the Houston Zoo.
  • Picture of a spur-winged goose (Plectropterus gambensis) at the Cleveland Metroparks Zoo.
  • Photo: A male and female pair of pied harrier (Circus melanoleucos) at the Avilon Zoo.
  • Photo: Chevron patter color morph of the Limosa harlequin frog (Atelopus limosus) at the Panama Amphibian Rescue and Conservation Project.
  • Photo: A Northern Philippine eagle-owl (Bubo philippensis philippensis) at the Avilon Zoo. This species is listed as vulnerable on the IUCN red list.
  • Photo: An Eastern ratsnake (Pantherophis alleghaniensis) at the Carolina Waterfowl Rescue.
  • Photo: Checkered garter snake (Thamnophis marcianus) at the Phoenix Zoo.
  • Photo: Eastern screech owl (Megascops asio asio) at the Nashville Zoo.
  • Photo: Peck's cave amphipod (Stygobromus pecki) at the Conservation Department of the San Antonio Zoo. Originally from the Comal Springs near New Braunfels, TX. This species is endangered on the IUCN Red List.
  • Photo: A ivory tusk shell (Graptacme eborea) at Gulf Specimen in Panacea, Florida.
  • Photo: A southern pocketbook (Lampsilis ornata) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Picture of a Swamp wallaby (Wallabia bicolor) at Healesville Sanctuary in Healesville, Victoria, Australia.
  • Photo: Western lesser siren (Siren intermedia nettingi) at the Conservation Department of the San Antonio Zoo.
  • Licorice gourami (Parosphromenus rubrimontis) at Zoo Negara.
  • Photo: A rusty-barred owl, Strix hylophila, at Tierpark Berlin.
  • Photo: A blue-lipped sea krait (Laticauda laticaudata) at the Toledo Zoo.
  • A critically endangered (IUCN) and federally endangered Sumatran tiger (Panthera tigris sumatrae).
  • A Chinese black coin turtle (Mauremys nigricans) at Missouri State University. (IUCN: Endangered)
  • Photo: Splendid sunbird (Cinnyris coccinigastrus) at the Houston Zoo.
  • Picture of a Gila monster (Heloderma suspectum) at Zoo Atlanta.
  • Picture of a female Brazilian teal or Brazilian duck (Amazonetta brasiliensis) at the Caldwell Zoo in Tyler, Texas.
  • A captive critically endangered (IUCN) and federally endangered California condor (Gymnogyps californianus) at the Phoenix Zoo.
  • A picture of a Pyrenean desman (Galemys pyrenaicus) photographed on the grounds of the Symington Estates in Portugal.
  • Picture of a red-throated parrotfinch (Erythrura psittacea) from a private collection in the Dominican Republic.
  • A picture of a redbreast tilapia (Coptodon rendelli) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: A golden silverside (Labidesthes vanhyningi) from a private collection in Knoxville, Tennessee.
  • A greater roadrunner (Geococcyx californianus) at the Sutton Avian Research Center, Bartlesville, Oklahoma.
  • A narrow-banded morph of a Kokoe poison frog (Phyllobates aurotaenia) from a private collection.
  • Photo: A male Kirghiz pheasant (Phasianus colchicus mongolicus) at the Plzen Zoo.
  • Photo: Mendoza's knob-scaled lizard (Xenosaurus mendozai) at the private collection in San Antonio.
  • Picture of four-week-old female black-necked swans (Cygnus melancoryphus) at the Sylvan Heights Bird Park.
  • Photo: An endangered Silverstone's poison frog (Ameerega silverstonei) at a private collection in Gainesville, Florida.
  • Picture of a juvenile brown booby (Sula leucogaster) at the National Aviary breeding center.
  • Photo: Tulip shell (Fasciolaria tulipa), with eggs from Gulf Specimen Marine Laboratories.
  • Picture of a Siamese fireback pheasant (Lophura diardi) at Pheasant Heaven, a private pheasant breeding center near Clinton, NC.
  • A picture of a slantface grasshopper nymph (Acrida sp.) at Graham's Quinta dos Malvedos Vineyard.
  • A picture of a vulturine guineafowl, Acryllium vulturinum at the Lincoln Children's Zoo.
  • Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.
  • Photo: A Chinese water dragon (Physignathus cocincinus) at Scaly Dave's Herp Shack in Manhattan, Kansas.
  • Photo: An endangered Southeast Asian box turtle (Cuora amboinensis) at the Turtle Survival Center.
  • A frill-necked lizard (Chlamydosaurus kingii) at the Lincoln Children's Zoo.
  • Photo: A hog-nosed pitviper, Porthidium nasutum, at Natura Eco Park.
  • Photo: Razor-billed curassow (MItu tuberosum) at Melbourne Zoo.
  • Photo: A Ecuadorian pink tarantula (Pamphobeteus platyomma) at Josh’s Frogs in Owosso, Michigan.
  • Picture of an Orinoco goose (Neochen jubata) at the Dallas World Aquarium.
  • Photo: A dwarf forrest scorpion (Didymocentrus krausi) at Verve Biotech in Waverly, Nebraska.
  • A picture of a white-sided rat snake (Pantherophis obsoleta quadrivittata) at Safari Land Pet Center.
  • A picture of a green cat snake, Boiga cyanea, at the Assam State Zoo in Guwahati, Assam, India.
  • Picture of a male king eider (Somateria spectabilis) at the Sylvan Heights Bird Park.
  • Photo: An Indo-Pacific borer urchin (Echinometra mathaei) at Riverbanks Zoo and Garden.
  • 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 wild caught pygmy grasshopper (Hymenotes triangularis) from Mt. Makiling forest in Luzon, Philippines.
  • Photo: A critically endangered juvenile northern white cheeked-gibbon (Nomascus leucogenys) at Omaha’s Henry Doorly Zoo and Aquarium.
  • A critically endangered black-eyed treefrog (Agalychnis moreletii) at the National Aquarium in Baltimore.
  • Photo: Io moth caterpillars (Automeris io) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • Photo: A female, vulnerable red-crowned parakeet (Cyanoramphus novaezelandiae) named 'Gidget'.
  • Photo: A Kentucky spring salamander (Gyrinophilus porphyriticus duryi) at the Toledo Zoo.
  • Photo: Brassy minnows (Hybognathus hankinsoni) at Schramm Education Center near Gretna, NE.
  • Picture of marsh fiddler crabs (Uca virens) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • An African clawed frog (Silurana tropicalis) from Bioko Island, Equatorial Guinea.
  • Photo: A blue-crowned conure (Psittacara acuticaudatus acuticaudatus) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • A school of flame chubs (Hemitremia flammea) at Conservation Fisheries in Knoxville, Tennessee.
  • Eyed anole (Anolis oculatus winstonorum) at Wroclaw Zoo.
  • Photo: An endangered Cochin forest cane turtle (Vijayachelys silvatica) at Turtle Island.
  • Photo: Camel shrimp (Rhynchocinetes uritai) photographed at Downtown Aquarium in Denver, Colorado.
  • Photo: A pair of tinfoil beetles (Pretosia lewisi) at the Cincinnati Zoo.
  • Photo: A royal antelope (Neotragus pygmaeus) at the LA Zoo.
  • Indian blue peafowl (Pavo cristatus) at the Lincoln Children's Zoo.
  • Photo: A male white-winged crossbill (Loxia leucoptera leucoptera) photographed at the Wildlife Rehabilitation Center of Minnesota.
  • Photo: Hoffman's conure (Pyrrhura hoffmanni gaudens) at a private collection.
  • Photo: A rufous-eyed brook tree frog (Duellmanohyla rufioculis) from the Tapir Valley, Cost Rica.
  • A critically endangered Chinese alligator (Alligator sinensis) at the Fresno Chaffe Zoo.
  • Picture of Australian wood ducks (Chenonetta jubata) at Sylvan Heights Bird Park.
  • A rock bass (Ambloplites rupestris) at Gavins Point National Fish Hatchery and Aquarium.
  • Photo: A leopard gecko (Eublepharis macularius) at Buin Zoo.
  • Photo: Black hawk-eagle or tyrant hawk-eagle (Spizaetus tyrannus) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: A critically endangered Anderson’s salamander (Ambystoma andersoni) at Tierpark Chemnitz in Chemnitz, Germany,
  • Photo: A rodent native to the cloud forest.
  • A federally endangered timber wolf (Canis lupus) named Kenai at the New York State Zoo.
  • Bar-headed geese (Anser indicus) at the Audubon Zoo in New Orleans.
  • Photo: A slender hemiodus (Hemiodus gracilis) at Dallas World Aquarium.
  • Photo: A New Caledonia giant gecko (Rhacodactylus leachianus) at Reptile Gardens.
  • A Cloncurry parrot, Barnadius zonarius macgillivrayi, at Loro Parque Fundacion.
  • A picture of a marbled lungfish (Protopterus aethiopicus mesmaekersi) at the Moscow Zoo.
  • Photo: A flame box crab (Calappa flammea) at Gulf Specimen Marine Lab and Aquarium.
  • A kinkajou (Potos flavus) at the NYS Zoo. This animal is native to Central and South America.
  • An endangered alligator lizard (Abronia graminea) at the Sedgwick County Zoo.
  • Photo: A critically endangered Reunion Island ornate day gecko, Phelsuma inexpectata, at the Plzen Zoo.
  • An endangered Bukharan markhor (Capra falconeri heptneri) at the Columbus Zoo.
  • Picture of a male Chilean pintail (Anas georgica spinicauda) at Sylvan Heights Bird Park.
  • Photo: A male greater sage grouse (Centrocercus urophasianus) at the Wilder Institute Calgary Zoo’s Devonian Wildlife Conservation Center in Alberta, Canada.
  • Picture of a female Eastern red bat (Lasiurus borealis) in Florida.
  • A Carolina wolf spider (Hogna carolinensis) at the Fort Worth Zoo.
  • A squirrel tree frog (Hyla squirella) at the Vancouver Aquarium.
  • Photo: The Common Mormon (Papilio polytes) at ACCB in Siem Reap, Cambodia.
  • A juvenile Florida cottonmouth (Agkistrodon piscivorus conanti) at the Archbold Biological Station. This animal was collected near Arcadia, Florida, in De Soto County.
  • Picture of a giant California sea cucumber (Parastichopus californicus) at the Monterey Bay Aquarium.
  • A tiny blue-bellied poison dart frog (Minyobates minuta) at Zoo Atlanta.
  • Photo: A sparganothis fruitworm moth (Sparganothis sulfureana) at Tall Timbers Research Station and Land Conservancy in Tallahassee, Florida.
  • 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.
  • A harpy eagle (Harpia harpyja) at the Los Angeles Zoo.
  • A threeridge mussel (Amblema plicata) at the Genoa National Fish Hatchery. This is one of 44 species of freshwater mussels still found in the upper Mississippi River near Prairie du Chien, WI.
  • A silver orb banded garden spider (Argiope argentata) at found at Spring Creek Prairie near Denton, Nebraska.
  • Photo: Four congo tetra (Phenacogrammus interruptus) at Pure Aquariums in Lincoln, Nebraska.
  • Photo: Australian bass (Macquaria novemaculeata) at the Freshwater Ecology and Marine Biology Dept. at Templestowe College.
  • A vulnerable African elephant (Loxodonta africana) at the Indianapolis Zoo.
  • Photo: An endangered (IUCN) and federally endangered snow leopard (Panthera uncia) at the Miller Park Zoo.
  • White-throated monitor (Varanus albigularis albigularis) at the Omaha Zoo.
  • Photo: Large fig parrot (Psittaculirostris desmarestii occidentalis) at Loro Parque Fundacion.
  • A Colorado pikeminnow (Ptychocheilus lucius) from the Colorado River. (IUCN: Vulnerable, US: Endangered)
  • Portrait of a male northern bobwhite quail (Colinus virginianus).
  • A tiny blue-bellied poison dart frog (Minyobates minuta) at Zoo Atlanta.
  • Picture of a panther chameleon (Furcifer pardalis) at the Lincoln Children's Zoo.
  • A picture of a female red-femured spotted orbweaver (Neoscona domiciliorum) caught in the Tide Swamp Unit of Big Bend Wildlife Management Area.
  • Photo: A tiger snake (Notechis scutatus) at Reptile Gardens.
  • Photo: A florida false coral (Ricordea florida) at the Auburn University Natural History Museum.
  • Photo: A male Tarapoto pink toe tarantula (Avicularia merianae) at the Urku Center, Tarapoto, Peru.
  • A green tree python (Morelia viridis) at the Riverside Zoo.
  • Photo: An American crocodile (Crocodilus acutus) at the Omaha Zoo.
  • Photo: A common waxbill (Estrilda astrild occidentalis) from Bioko Island, Equatorial Guniea.
  • Photo: A mangrove snake (Boiga dendrophila dendrophila) in Jakarta, Indonesia in the care of PT. Alam Nusantara Jayatama.
  • Picture of a yellow-green grosbeak (Caryothraustes canadensis) at the Houston Zoo.
  • Photo: White-spotted longhorn beetle (Batocera hector) at the Insectarium in New Orleans.
  • Photo: An Adanson’s mud turtle (Pelusios adansonii) at the Turtle Survival Center.
  • Picture of a cotton mouse (Peromyscus gossypinus palmarius) from the wild in Florida.
  • Photo: A smooth-headed alligator lizard (Gerrhonotus ophiurus) from a private collection in Billerbeck, Germany.
  • Photo: A telescope shiner (Notropis telescopus) from a private collection in Knoxville Tennessee.
  • Photo: An endangered greater adjutant stork (Leptoptilos dubius) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • Photo: A tomato frog (Dyscophus guinetti) at the Vancouver Aquarium.
  • A male common grackle (Quiscalus quiscula) at the San Antonio Zoo.
  • A great barred frog (Mixophyes fasciolatus) from Dreamworld.
  • Photo: An endangered male Persian fallow deer (Dama mesopotamica) at Tierpark Berlin.
  • 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: A silver pheasant (Lophura nycthemera) at Parque Biologico.
  • Photo: A mottled rock rattlesnake (Crotalus lepidus lepidus) at Reptile Gardens.
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • A common moorhen (Gallinula galeata cachinnans) at the Virginia Aquarium.
  • Photo: A cape kurper (Sandelia capensis) at Plzen Zoo, in the Czech Republic.
  • Photo: A brown-headed cowbird (Molothrus ater artemisiae) at the Wildlife Rehabilitation Center of Northern Utah.
  • A swamp darter (Etheostoma fusiforme) at Conservation Fisheries, a native stream fish breeding center in Knoxville. This fish is common and widespread in the southeastern U.S.
  • Photo: Decim periodical cicada, Magicicada septendecim, from Gretna, Nebraska.
  • Photo: Ten different lorikeet species and subspecies from the genus Tricholglossus, at Loro Parque Fundacion.
  • A bluegill (Lepomis macrochirus) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: A Lichen huntsman spider (Heteropoda boiei) at the Moscow Zoo.
  • Photo: Blacksmith plover at the Henry Doorly Zoo and Aquarium.
  • An endangered Rio Azuela glass frog (Hyalinobatrachium pellucidum) collected near Pilalo, Ecuador.
  • Photo: A ninja woodcat (Centromochlus orca) at Josh’s Frogs in Owosso, Michigan.
  • A sturgeon chub (Macrhybopsis gelida) at the Nebraska Game & Parks Commission, Nebraska.
  • Photo: A red-crowned roof turtle (Batagur kachuga) at the Gharial and Turtle Rehabilitation Center in Lucknow, Upper Pradesh, India.
  • A boa constrictor at the Sunset Zoo.
  • Photo: An Asian palm civet (Paradoxurus hermaphroditus philippinensis) at the Plzen Zoo.
  • New Guinea snapping turtle (Elseya novaeguineae) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Hall's New Guinea crocodile (Crocodylus halli) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • Photo: Benjamin, the Los Angeles Basin brush rabbit (Sylvilagus bachmani cinerascens) at the Big Bear Alpine Zoo in Big Bear Lake, CA.
  • Photo: A badge star (Porania pulvillis insignis) at the Maine State Aquarium in West Boothbay, ME.
  • Picture of a garganey teal (Spatula querquedula) at Sylvan Heights Bird Park.
  • Photo: A pair of redband darters (Etheostoma luteovinctum) from a private collection in Knoxville, Tennessee.
  • Photo: Pacific staghorn sculpin (Leptocottus armatus) at East Bay Regional Park District.
  • A Kenyan Sand Boa (Eryx colubrinus loveridgei) at Sedgwick County Zoo.
  • A white-crested laughing thrush (Garrulax leucolophus) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Snowy egret (Egretta thula) at the Lincoln Children's Zoo.
  • Blanding's turtle (Emydoidea blandingii) at the Toledo Zoo.
  • A robber frog (Pristimantis species) near Limon, Ecuador.
  • Photo: Brazilian blue and red tarantula (Avicularia geroldi) at the Bugarium at the Albuquerque BioPark.
  • Photo: Brown leaf chameleon (Brookesia superciliaris) from a private collection.
  • A picture of a pair of black-throated laughing thrush (Pterorhinus chinensis chinensis) at the Houston Zoo.
  • Photo: Broad-snouted caiman at the St. Augustine Alligator Farm.
  • Photo: Papuan python (Apodora papuana) at the Saint Louis Zoo.
  • A federally endangered Bocaccio rockfish (Sebastes paucispinis) at East Bay Regional Park District.
  • A nearly 100 year old male Galapagos tortoises (Chelonoidis vicina) at the Gladys Porter Zoo.
  • Photo: A ring-headed dwarf snake (Eirenis modestus) at Zoopark Zajezd.
  • Photo: An endangered gray woolly monkey (Lagothrix cana) at Mantenedor da Fauna Silvestre Cariuá.
  • A picture of a red-sided curly-tailed lizard (Leiocephalus schreibersii schreibersii) at the Houston Zoo.
  • Photo: A critically endangered Anderson’s salamander (Ambystoma andersoni) at Tierpark Chemnitz in Chemnitz, Germany,
  • An upper Amazon treefrog (Dendropsophus bifurcus) tadpole collected near Pilalo, Ecuador.
  • Photo: An Eurasian eagle owl (Bubo bubo sibiricus) at Parco Natura Viva in Bussolengo, Italy.
  • A tawny owl or brown owl (Strix aluco aluco) from the Budapest Zoo.
  • A picture of an adult mountain brook lamprey (Ichthyomyzon greeleyi) photographed at the Aquatic Wildlife Conservation Center. This animal was collected on the Nash’s Ford on the Clinch River, VA.
  • A female, vulnerable African elephant (Loxodonta africana) at the Cheyenne Mountain Zoo.
  • Photo: A pimpleback (Cyclonaias putsulosa) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Photo: A silty hornsnail (Pleurocera canaliculata) from the Elk River in Alabama.
  • A picture of a masked lapwing chick (Vanellus miles novaehollandiae) from Australia.
  • Photo: Razorfish (Aeoliscus strigatus) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • A picture of a toucan barbet (Semnornis ramphastinus caucae) at the National Aviary breeding center in Palmar, Colombia.
  • A beaver (Castor canadensis) tail.
  • Photo: A female variable sunbird (Cinnyris venustus falkensteini) from Mt. Gorongosa in Gorongosa National Park.
  • Picture of Australian wood ducks (Chenonetta jubata) at Sylvan Heights Bird Park.
  • Photo: A male long-crested eagle (Lophaetus occipitalis) at World Bird Sanctuary.
  • Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.
  • Photo: A common wall gecko (Tarentola mauritanica mauritanica) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: An English sole (Parophrys vetulus) at the Alaska SeaLife Center.
  • Photo: Spiny tachina fly or hedgehog fly (Paradejeania sp.) at the Museo d'Orbigny Natural History Museum in Cochabamba, Bolivia.
  • Picture of three crested partridges (Rollulus rouloul) at the Indianapolis Zoo.
  • A Clark's nutcracker (Nucifraga columbiana) at the University of Nebraska-Lincoln.
  • Photo: An unidentified caterpillar (Noctuidae sp.) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: This is a male Menelaus blue morpho butterfly (Morpho menelaus) at the Pilpintuwasi Butterfly Farm and Amazon Animal Orphanage.
  • Photo: Moapa dace (Moapa coriacea) at Warm Springs Natural Area, Upper Muddy River, NE Clark County, Nevada.
  • Photo: A male wolf spider (Schizocosa aulonia) from the University of Nebraska-Lincoln.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild)
  • Photo: Marble velvet gecko (Oedura marmorata) at Lilydale High School in Australia.
  • Photo: A Heck's macaque (Macaca hecki) at Bali Safari.
  • A gray rat snake (Pantherophis obsoleta spiloides)at the Estuarium in Dauphin Island, AL.
  • Photo: A golden-breasted starling (Lamprotornis regius) at the Riverbanks Zoo in Columbia, SC.
  • Photo: A juvenile spotted gar (Lepisosteus oculatus) photographed in the Sciences and Technology Building at Nicholls State University in Thibodaux, Louisiana.
  • Picture of a large-eyed pit viper (Cryptelytrops macrops) at the Dallas Zoo.
  • Photo: A male Oriental pied hornbill (Anthracoceros albirostris convexus) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Picture of a Yellow-rumped warbler (Setophaga coronata coronata) at the Columbus Zoo.
  • Photo: An African pygmy hedgehog (Atelerix albiventris) at the John Ball Zoo.
  • A picture of a Parson's chameleon (Calumma parsonii parsonii) at the Houston Zoo.
  • Photo: A dwarf glass frog (Teratohyla spinosa) from the Tapir Valley, Costa Rica.
  • Photo: Gorilla crab or elbow crab (Parthenope granulata) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Snowy-crowned robin-chat (Cossypha niveicapilla) at the Oklahoma City Zoo.
  • Photo: A golden-handed tamarin (Saguinus midas) at the Miller Park Zoo
  • Photo: A six-year-old female white gyrfalcon (Falco rusticolus) named Evie at the Chintimini Wildlife Center in Corvallis, OR.
  • Picture of critically endangered (IUCN) and federally endangered Edwards's pheasants at the Sunset Zoo in Manhattan, KS.
  • A Barbary falcon (Falco pelegrinoides).
  • Photo: A prickly gecko (Heteronotia binoei) at Omaha's Henry Doorly Zoo.
  • A picture of a Western Javan langur (Trachypithecus mauritius) at Taman Safari in Bogor, West Java, Indonesia.
  • Picture of monarch butterflies (Danaus plexippus) from Sierra Chincua, Mexico.
  • Picture of a rainbow lorikeet (Trichoglossus moluccanus) from Brisbane, Queensland, Australia.
  • Photo: A critically endangered nsess (Stomatepia mariae) at Moscow Zoo.
  • Photo: A dunlin (Calidris alpina schinzii) at Lundi Farm in Verl, Germany.
  • Photo: European eel or Enguia (Anguilla anguilla) at the Environmental Education Center of the Ribeiras de Gaia.
  • Photo: A water scavenger beetle (Hydrophilus triangularis) at the Audubon Insectarium in New Orleans, Louisiana.
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