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.

Learn MoreBooksDonate

Explore the Photo Ark

Search the 46,777-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.

Explore the gallery
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.

Explore the gallery

Gallery

Behind the Scenes

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

Explore the gallery
  • Photo: Jacintha eggfly butterfly (Hypolimnas bolina jacintha) at Singapore Zoo.
  • A picture of a European polecat (Mustela putorius furo) at the Moscow Zoo.
  • Photo: A brain coral (Platygyra pini) at the Downtown Aquarium in Denver, Colorado.
  • Grey-headed fish-eagle (Icthyophaga ichthyaetus) at ACCB in Siem Reap, Cambodia.
  • Photo: A male Common shiner (Luxilus cornutus) in breeding colors at the Minnesota Department of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: Horsehead grasshopper (Pseudoproscopia latirostris) at Wroclaw Zoo.
  • Photo: Caterpillar of the purple mort bleu (Eryphanis polyxena at Butterfly Pavilion in Westminster, Colorado.
  • Photo: A canebreak rattlesnake (Crotalus horridus atricaudatus) at the Metro Richmond Zoo.
  • An El Cope morph of the green and black poison dart frog (Dendrobates auratus) at the Baltimore Aquarium. This animal is a descendant of the few remaining animals in El Cope National Park in Panama, where the chytrid fungus may wipe out the animal at any time.
  • A studio portrait of a Chihuahuan night snake, Hypsiglena jani.
  • Photo: An ambiguous crayfish (Cambarus striatus cf) at the Fish Biodiversity Lab at Auburn University.
  • Photo: An endangered Italian asp viper (Vipera aspis francisciredi) at Reptiland in Riva del Garda Italy.
  • A juvenile musk ox (Ovibos moschatus moschatus) at the University of Alaska in Fairbanks, AK.
  • Scarlet macaws (Ara macao) at the Henry Doorly Zoo in Omaha, Nebraska.
  • Critically endangered (IUCN) Chucky madtom (Noturus crypticus), one of only 14 specimens ever to be collected, at Conservation Fisheries, a native stream fish breeding center. This fish has not been listed due to lack of funding even though it is one of the rarest fish in North America.
  • Photo: A feathertail glider (Acrobates pygmaeus).
  • Photo: A coosa darter (Etheostoma coosae) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Walnut Creek in Chilton County, AL.
  • Photo: A critically endangered pinstripe menarambo or pinstripe damba (Paretroplus menarambo) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: A glass anemone (Exaiptasia pallida) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: Peruvian green and gold millipede (Orthoporus sp.) at the Miller Park Zoo. Millipede is Greek for "a thousand legs", although they have more like 200.
  • Photo: Endangered Cope's arboreal alligator lizard (Abronia aurita) at Urban Ark Conservation.
  • Picture of a male Mountain goat (Oreamnos americanus) at the Cheyenne Mountain Zoo.
  • A female Gray's crowned guenon (Cercopithecus pogonias grayi) named Amanda, named after Spock's mother in Star Trek. There are five individuals left of this species, which is a phase out species, meaning when they're gone, that's it.
  • Photo: Kimberly rock monitor (Varanus glauerti) at Wroclaw Zoo.
  • A male mimic poison frog (Ranitomeya imitator) with a single tadpole on his back, from a private collection.
  • Red-bellied short-necked turtle (Emydura subglobosa) at the Lincoln Children's Zoo.
  • A small milkweed bug (Lygaeus kalmii) crawls on a federally endangered Santa Anna River woolystar (Eriastrum densifolium ssp. sanctorum).
  • A bull trout (Salvelinus confluentus) from Bighorn Creek, part of the Kootenay River system. (IUCN: Vulnerable; US: Federally threatened)
  • Photo: Trinidad dwarf tiger (Cyriocosmus elegans) at the Moscow Zoo.
  • A picture of a spotted girdle-tailed lizard (Smaug depressus) at the St. Louis Zoo.
  • Photo: Western lesser siren (Siren intermedia nettingi) at the Conservation Department of the San Antonio Zoo.
  • Photo: An African rear-horned baboon tarantula (Ceratogyrus darlingi) at the San Antonio Zoo in San Antonio, Texas.
  • A boa constrictor at the Sunset Zoo.
  • A picture of a Mexican box turtle (Terrapene mexicana) at Zoo Atlanta.
  • White-cheeked turaco (Tauraco leucotis leucotis) at the Bramble Park Zoo, Watertown, South Dakota.
  • The southeastern lubber grasshopper (Romalea microptera) at Santa Fe Community College Teaching Zoo.
  • A picture of a limon harlequin toad (Atelopus sp. Limon complex) at Centro Jambatu in Quito, Ecuador.
  • Photo: A female, nineteen year old, eastern black rhinoceros named Bibi (Diceros bicornis michaeli) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A three-month-old Virginia opossum (Didelphis virginiana pigra) at the St. Francis Wildlife Association in Quincy, Florida.
  • Photo: Many-lined skink (Plestiodon multivirgatus) from a private collection.
  • A beaded gecko (Lucasium damaeus) at Conservation Fisheries.
  • Photo: A male Hardwicke’s rat snake (Platyceps ventromaculatus) at Arabia’s Wildlife Centre in Sharjah, United Arab Emirates.
  • Photo: A dotted dwarf racer (Eirenis punctatolineatus) from a private collection in Billerbeck, Germany.
  • Picture of a two-month old, federally endangered jaguar cub (Panthera onca) named Teiku at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A Southern smooth snake (Coronella girondica) at Centro Fauna Selvatica "Il Pettirosso".
  • Photo: A male Endler’s livebearer (Poecilia wingei) at Josh’s Frogs in Owosso, Michigan.
  • Photo: African wildcat (Felis silvestris ocreata) at the Moscow Zoo.
  • An American robin (Turdus migratorius propinquus) at the Wildlife Rehabilitation Center of Northern Utah.
  • An endangered (IUCN) and federally endangered steller sea lion (Eumetopias jubatus) at Ocean Park in Hong Kong.
  • Photo: A silty hornsnail (Pleurocera canaliculata) from the Elk River in Alabama.
  • Photo: Tiger nerite snail (Neritina natalensis) at Kansas University.
  • Picture of twin three month old endangered western red pandas (Ailurus fulgens fulgens) at the Lincoln Children's Zoo.
  • Photo: A New Zealand falcon (Falco novaeseelandiae) at the Kiwi Birdlife Park in Queenstown, NZ.
  • Photo: Amargosa voles (Microtus californicus scirpensis) at the University of California, Davis school of Veterinary Medicine.
  • Picture of a vulnerable Southeast Asian softshell turtle (Amyda cartilaginea) from the Cuc Phuong Turtle Conservation Center, Vietnam.
  • A critically endangered (IUCN) and federally endangered red wolf (Canis rufus gregoryi) at the Great Plains Zoo.
  • A Livingstone's turaco (Tauraco livingstonii) at the Houston Zoo.
  • A red-eyed tree frog (Agalychnis callidryas), at the Sunset Zoo in Manhattan, KS.
  • Picture of an endangered (IUCN) and federally endangered Grand Cayman blue iguana (Cyclura lewisi) at the San Diego Zoo.
  • Picture of a male redhead duck (Aythya americana) at the Sylvan Heights Bird Park
  • Common postman (Heliconius melpomene) at Saint Louis Zoo.
  • Photo: A largescale stoneroller (Campostoma oligolepis) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected from Cahaba River, Perry County, AL.
  • Photo: A Florida ivory millipede (Chicobolus spinigerus) at the Bugarium, part of the ABQ BioPark.
  • Photo: A burgundy goliath bird eater (Theraphosa stirmi) at the Virginia Zoo.
  • Photo: An endangered African long-tailed gartersnake (Elapsoidea sundevallii longicauda) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: A female kelp goose (Chloephaga hybrida hybrida) at Lundi Farm in Verl, Germany.
  • Photo: A water bug with eggs (Belostoma flumineum) at the Bugarium, a part of the ABQ BioPark.
  • Photo: A black-and-white mannikin (Spermestes bicolor poensis) at the Thisa Zoo in Stekene, Belgium.
  • Photo: A Hajar Lotak (Cyprinion muscatense) photographed at the Arabia’s Wildlife Centre.
  • A federally threatened New Mexico ridge-nosed rattlesnake (Crotalus willardi obscurus) at the Arizona Sonora Desert Museum.
  • Photo: An Arizona tailless whip scorpion (Paraphrynus carolynae) at Josh’s Frogs in Michigan.
  • Picture of a red-backed darkling beetle (Eleodes suturalis) at the St. Louis Zoo.
  • Photo: Maracaibo wood turtle (Rhinoclemmys diademata) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: A southern sea otter (Enhydra lutris nereis) named Brook, age 19.
  • Photo: Jewel damselfish (Microspathodon chrysurus) at the Albuquerque BioPark Aquarium.
  • Picture of a southern rainbow (Villosa vibex) collected from the Suwannee River in Florida.
  • Photo: Cairns birdwing caterpillar (Ornithoptera euphorion) at Melbourne Zoo.
  • Photo: A tarantula (Monocentropus lambertoni) from a private collection.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Picture of a vulnerable Steller's sea eagle (Haliaeetus pelagicus) at the LA Zoo.
  • Picture of a vulnerable male long tailed duck or oldsquaw (Clangula hyemalis) in summer plumage at Patuxent Wildlife Research Center
  • A picture of an American kestrel (Falco sparverius sparverius) at the Lincoln Children's Zoo.
  • A picture of a spotted imperial pigeon (Ducula carola carola) at the Plzen Zoo in the Czech Republic. This species is listed as vulnerable.
  • A Collett's snake (Pseudechis colletti).
  • A Gunther's banded treefrog, Hypsiboas fasciatus.
  • Photo: An unidentified coral (Montipora sp.) at the Akron Zoo.
  • Photo: Gulf menhaden fish (Brevoortia patronus) at Gulf Specimen Marine lab, Panacea, FL.
  • Photo: A magnificent bird-of-paradise (Cicinnurus magnificus magnificus) at Walsrode Bird Park in Walsrode, Germany.
  • Photo: Plum faced lorikeet (Oreopsittacus arfaki major) at Loro Parque Fundacion.
  • Picture of a green-cheeked parakeet (Pyrrhura molinae hypoxantha) at Pet Paradise.
  • Photo: An adult ladder snake (Rhinechis scalaris) at the Environmental Education Center of the Ribeiras de Gaia.
  • A muscovy duck named Joelle (Cairina moschata moschata) at the Gladys Porter Zoo in Brownsville, Texas.
  • A female Papuan hornbill (Rhyticeros plicatus) at Ocean Park in Hong Kong.
  • Photo: A firefly (Ellychnia hatchi) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • The wing of a federally endangered Florida grasshopper sparrow (Ammodramus savannarum floridanus). This sparrow was photographed inside of a shooting tent at the Kissimmee Prairie Preserve State Park, one of the last examples of Florida dry prairie which is an essential habitat for species like this one.
  • Photo: Tanzanian whip scorpion (Damon variegatus) at the Moscow Zoo.
  • Photo: A giant golden mantis (Hierodula venosa) at the Bugarium, part of the ABQ BioPark.
  • Photo: A blackfin goodea (Goodea atripinnis) at the ABQ BioPark.
  • Picture of a Barnett's lancehead (Bothrops barnetti) at the Dallas Zoo.
  • Photo: A white tubercled crayfish (Procambarus spiculifer) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • A picture of a white-bellied kingfisher (Corythornis leucogaster leucogaster) from Bioko Island, Equatorial Guinea.
  • A picture of common bulbuls (Pycnonotus barbatus tricolor) in Gorongosa National Park in Mozambique, Africa.
  • Photo: Northern Plains ratsnake (Pantherophis emoryi) collected in Thayer County, Nebraska.
  • An endangered female crowned lemur (Eulemur coronatus) at the Cleveland Metroparks Zoo.
  • Picture of a whooper swan, Cygnus cygnus, at Sylvan Heights Bird Park.
  • Photo: Plumbeous kite (Ictinia plumbea) at Parque Jaime Duque near Bogota, Colombia.
  • A captive English/house sparrow (Passer domesticus) photographed at a studio in Lincoln, NE.
  • A Northern red-billed hornbill (Tockus erythrorhynchus erythrorhynchus) at Omaha’s Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • Photo: Golden silk orb weaver spider (Nephila edulis)at the Budapest Zoo.
  • A male white-spotted glass frog or white-spotted cochran frog (Sachatamia albomaculata), a species native to Panama and Central America, at Zoo Atlanta.
  • A black crested mangabey (Lophocebus aterrimus) at the Chattanooga Zoo.
  • A tiny blue-bellied poison dart frog (Minyobates minuta) at Zoo Atlanta.
  • Photo: A critically endangered Lake Patzcuaro salamander (Ambystoma dumerilii) at the Zoological Society of London.
  • Picture of a banded huntsman spider (Holconia immanis) at the Taronga Zoo.
  • Photo: A male Peninsular Malaysian king cobra (Ophiophagus hannah) at Eco Animal Encounters in Whiteway, England.
  • Southern ring-necked snakes (Diadophis punctatus punctatus) at Cape Canaveral.
  • A picture of a tiger beetle (Prothyma sp.) from Mt. Makiling forest in Luzon, Philippines.
  • Photo: Two slate-colored juncos (Junco hyemalis hyemalis) at the Wildlife Rehabilitation Center of Minnesota.
  • A picture of a crowned hornbill (Lophoceros alboterminatus) at the San Antonio Zoo.
  • spotted leaf-toed gecko (Hemidactylus prashadi) from a private collection.
  • Photo: A male ruff (Calidris pugnax) at Lundi Farm in Verl, Germany.
  • Picture of a poison goby (Gobiodon citrinus) at the Loveland Living Planet Aquarium.
  • Picture of a Keel-billed toucan (Ramphastos sulfuratus) at Tracy Aviary.
  • Photo: A south Arabian spiny-tailed lizard (Uromastyx yemenensis) at the Denver Zoo.
  • Photo: A bearded pygmy chameleon, Rhampholeon brevicaudata, at the Sedgwick County Zoo.
  • Narrow-headed garter snake (Thamnophis rufipunctatus) at the Phoenix Zoo.
  • Budgett's frog (Lepidobatrachus laevis) at the National Aquarium in Baltimore.
  • A white rhinoceros (Ceratotherium simum simum) at Rolling Hills Wildlife Adventure in Salina, Kansas.
  • A Panamanian color morph of (Dendrobates auratus) at the El Valle Amphibian Conservation Center (EVACC).
  • Photo: A philyra spider crab (Micippa philyra) from the Gulf of Oman.
  • Picture of a short-tailed mamushi (Gloydius brevicaudus siniticus) at the St. Louis Zoo.
  • Picture of a snow goose (Chen caerulescens) in blue phase.
  • Photo: A giant desert centipede (Scolopendra polymorpha). At the Riverside Zoo.
  • Photo: Snails at the Arizona-Sonora Desert Museum in Tucson, AZ.
  • Photo: A granite night lizard (Xantusia henshawi) from a private collection in Billerbeck, Germany.
  • Picture of a whistling kite (Haliastur sphenurus) at Healesville Sanctuary.
  • Photo: A Vietnamese warty newt (Tylototriton vietnamensis) from a private collection in Billerbeck, Germany.
  • Photo: A thick-billed murre (Uria lomvia) named Rudy at the North Carolina Zoo in Asheboro, North Carolina.
  • A federally threatened Cuban iguana (Cyclura nubila nubila) at the San Diego Zoo.
  • Photo: Senegal bichir (Polypterus senegalus) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: Baja California rat snake (Bogertophis rosaliae) at the LA Zoo.
  • Photo: A whitefin shiner (Cyprinella nivea) from a private collection in Knoxville, Tennessee.
  • Photo: A blue-winged macaw (Primolius maracana) at the Houston Zoo.
  • Photo: A Cameroon forest treefrog (Leptopelis brevirostris) from Bioko Island, Equatorial Guinea.
  • Photo: A Prevost's squirrel (Callosciurus prevostii bangkanus) at the Berlin Zoo.
  • Photo: Sonora sucker (Catostomus insignis) at Mora National Fish Hatchery.
  • Photo: A cocoa thrush (Turdus fumigatus fumigatus) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: Gargantuan stick insect (Ctenomorpha gargantua) from the Melbourne Museum
  • Picture of a sanderling (Calidris alba) at the Monterey Bay Aquarium.
  • Photo: A brush-tail tang (Zebrasoma scopas) at the Zoological Society of London.
  • Picture of a vulnerable Madagascar spider tortoise (Pyxis arachnoides oblonga) at the Fresno Chaffe Zoo.
  • Photo: Blue mahseer (Neolissochilus stracheyi) at Zoo Negara.
  • A gulf fritillary butterfly (Agraulis vanillae incarnata) at the Gladys Porter Zoo.
  • A Mexican ratsnake (Elaphe flavirufa flavirufa) at the Gladys Porter Zoo in Brownsville, Texas.
  • A picture of a noisy miner (Manorina melanocephala melanocephala) at a private collection in Queensland, Australia.
  • Picture of a red-margined wrasse aka pink margin fairy wrasse (Cirrhilabrus rubrimarginatus) at the Nebraska Aquatic Supply.
  • Photo: A speckled forest viper (Bothrops taeniata) photographed at Phoenix Herpetological Sanctuary.
  • Picture of an Ebenaui mantella (Mantella ebenaui) at the Sedgwick County Zoo.
  • Photo: A male mountain beaver (Aplodontia rufa pacifica) at the Wildlife Center of the North Coast in Astoria, Oregon.
  • Photo: A striped burrfish (Chilomycterus schoepfii) at the Virginia Aquarium.
  • Photo: The feet of a female greater sage grouse (Centrocercus urophasianus) at the Wilder Institute Calgary Zoo’s Devonian Wildlife Conservation Center in Alberta, Canada.
  • Photo: A longnose killifish (Fundulus similis) photographed in the Sciences and Technology Building at Nicholls State University in Thibodaux, Louisiana.
  • Kansas glossy snake (Arizona elegans elegans) collected in Dundee County, Nebraska.
  • Photo: A Gray's Malayan stick, Lonchodes brevipes, at the Houston Zoo.
  • Photo: A mourning gecko (Lepidodactylus lugubris) from a private collection.
  • Photo: A Swinhoe’s striped squirrel (Tamiops swinhoei) Shaldon Wildlife Trust in Shaldon, England.
  • Picture of a northwestern garter snake (Thamnophis sirtalis) at the Oregon Zoo.
  • Photo: A black-necked weaver (Ploceus nigricollis) at the Zoological Society of London.
  • Photo: A krait (Bungarus sindonus sindonus) at Reptile Gardens.
  • Picture of a Western king wrasse (Coris auricularis) at Omaha's Henry Doorly Zoo and Aquarium.
  • A picture of a striped skunk (Mephitis mephitis varians) at The Wildlife Center in New Mexico.
  • Photo: A speckled chachalaca (Ortalis guttata subaffinis) at BioParque do Rio.
  • Photo: Southwestern gray fox (Urocyon cinereoargenteus scottii) at Southwest Wildlife Conservation Center.
  • A pigeon guillemot (Cepphus columba columba) at the Cincinnati Zoo.
  • Photo: A Scottish wildcat, Felis silvestris grampia, at Wildwood Trust near Canterbury, England.
  • Photo: A Pacific Coast giant musk turtle (Staurotypus salvini) from a private collection.
  • Picture of Pearse's mudskipper (Periophthalmus novemradiatus) at the Newport Aquarium.
  • Picture of Nabire, a Northern white rhinoceros (Ceratotherium simum cottoni)
  • Photo: An orchard oriole (Icterus spurius) in Hudson, Wisconsin.
  • Photo: A Lilian's or Nyasa lovebird (Agapornis lilianae) in Choussy, France.
  • A Snake River fine-spotted cutthroat trout (Oncorhynchus clarkii behnkei) at the MK Nature Center in Boise, Idaho.
  • Picture of a Bolivian blue-legged tarantula (Pamphobeteus antinous) at the Wellington Zoo.
  • A Colombian pumpkin patch tarantula (Hapalopus formosus) at Butterfly Pavilion in Westminster, Colorado.
  • The fin of a relict darter (Etheostoma chienense) a federally threatened species at Conservation Fisheries, a native stream fish breeding center.
  • Photo: A female red-footed booby (Sula sula websteri) named Sula at Aquarium of the Pacific in California.
  • Picture of a group of eastern tiger salamanders (Ambystoma tigrinum tigrinum) at the Caldwell Zoo in Tyler, Texas.
  • Photo: A critically endangered Pagai Island macaque (Macaca pagensis) at Taman Safari in Bogor, West Java, Indonesia.
  • Photo: An African chaffinch (Fringilla coelebs africana) at Zoo Plzeň.
  • Picture of a grizzly bear (Ursus arctos horribilis) at the Sedgwick County Zoo.
  • Photo: A skeleton shrimp (Caprella sp.) at the Maine State Aquarium in West Boothbay, ME.
  • Photo: Gulf hagfish (Eptatretus springeri) at Gulf Specimen Marine Lab.
  • A picture of a red-wattled lapwing (Vanellus indicus indicus) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • A kinkajou (Potos flavus) at the NYS Zoo. This animal is native to Central and South America.
  • Yellow-lined poison dart frog (Dendrobates truncatus). The photo was taken at the National Aquarium in Baltimore.
  • Picture of a critically endangered and federally endangered radiated tortoise (Astrochelys radiata) from the Indianapolis Zoo.
  • Photo: An Eastern pygmy marmoset (Cebuella niveiventris) at the Pilpintuwasi Butterfly Farm and Amazon Animal Orphanage.
  • Picture of a federally endangered Ozark hellbender (Cryptobranchus alleganiensis bishopi), infected with chytrid fungus, at the St. Louis Zoo, St. Louis, Missouri.
  • Photo: A Leptiens spiny-tailed lizard (Uromastyx aegyptia leptieni) at the Bristol Zoo.
  • Picture of a flat-clawed hermit crab (Pagurus pollicaris) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A least gerbil (Gerbillus pusillus) at the Plzen Zoo.
  • A gopher tortoise (Gopherus polyphemus) a vulnerable (IUCN) and federally threatened species at Zoo Atlanta.
  • A northern double-collared sunbird (Cinnyris reichenowi preussi) in Bioko Island Equatorial Guinea.
  • Picture of a western snowy plover (Charadrius nivosus nivosus) at the Monterey Bay Aquarium.
  • A giant panda (Ailuropoda melanoleuca) at Zoo Atlanta. This endangered (IUCN) and federally endangered species is native to China.
  • Photo: A mimic shiner (Notropis volucellus) at the Center for Aquatic Mollusk Programs in Lake City, Minnesota.
  • Photo: Blue color morph of the red swamp crayfish (Procambarus clarkii) at the Bugarium at the Albuquerque BioPark.
  • Photo: Brown trout (Salmo trutta fario) at the Environmental Education Center of the Ribeiras de Gaia.
  • Photo: A diving skink (Amphiglossus reticulatus) at the Amphibian Foundation.
  • Photo: The underside of a jazzy leafwing butterfly (Hypna clytemnestra) at the Butterfly Pavilion in Westminster, Colorado.
  • Vulnerable (IUCN) Oregon spotted frog (Rana pretiosa) at the Sunriver Nature Center in Deschutes County, OR.
  • Photo: A Saker falcon (Falco cherrug cherrug) photographed at the Dubai Falcon Center in Dubai, United Arab Emirates.
  • A vulnerable great curassow (Crax rubra rubra) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A walleye (Sander vitreus vitreus) at the Genoa National Fish Hatchery.
  • Photo: A prickly gecko (Heteronotia binoei) at Omaha's Henry Doorly Zoo.
  • Photo: A Northern Pacific rattlesnake (Crotalus oreganus oreganus) at the American International Rattlesnake Museum in Albuquerque, NM.
  • Spring peeper (Pseudacris c. crucifer) at the National Aquarium in Baltimore.
  • Photo: Giant grasshopper (Valanga nigricornis insularis) from the Melbourne Museum
  • Picture of a Meller's chameleon (Trioceros melleri) named Petunia at the Dallas World Aquarium.
  • Picture of a crab-eating fox (Cerdocyon thous) named Pepito at the Summit Municipal Park in Gamboa, Panama.
  • Photo: A critically endangered juvenile white cheeked-gibbon (Nomascus leucogenys) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: Nymph of the American salmonfly (Pteronarcys dorsata) at Conservation Fisheries.
  • A Northern black-bellied whistling duck (Dendrocygna autumnalis autumnalis) at the Sylvan Heights Bird Park.
  • Picture of a critically endangered suwannee moccasinshell (Medionidus walkeri) collected from the Suwannee River in Florida.
  • Photo: An endangered (IUCN) and federally endangered snow leopard (Panthera uncia) at the Miller Park Zoo.
  • A spiny softshell turtle (Apalone spinifera) at the aquarium at Gavins Point National Fish Hatchery.
  • Crowned iguana (Laemanctus serratus) from the Omaha Zoo.
  • Photo: An Asian house shrew (Suncus murinus) at the Plzen Zoo.
  • A picture of a Tapir Valley treefrog (Tlalocohyla celeste) from the Tapir Valley, Costa Rica.
  • A picture of a female Andean cock-of-the-rock (Rupicola peruvianus sanguinolentus) at the Dallas World Aquarium.
  • A Japanese giant salamander (Andrias japonicus) at the San Antonio Zoo, San Antonio, Texas. (IUCN: Near Threatened)
  • Bryn, the federally endangered Columbia Basin pygmy rabbit (Brachylagus idahoensis), sat for this portrait in 2007 at the Oregon Zoo in Portland, Oregon. She was one of two female Columbia Basin pygmy rabbits left, the end of the line for this species of animals. Since there are no males left, this means only animals intercrossed with the Idaho race will survive. She died in 2008, marking the end of her genetic line. This subpopulation lost its sagebrush habitat as the land was developed for agriculture in the state of Washington.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Photo: A brown-necked raven (Corvus ruficollis) at Wildlife Hospital of Israel & Ramat Gan Safari Park, in Ramat Gan, Israel.
  • Photo: An endangered Pearl River map turtle (Graptemys pearlensis) at the Turtle Survival Center.
  • Photo: A geometrid moth (Syncirsodes primata) at Fauna Andina, a conservation center near south-central Chile.
  • A soapdish crab (Clariosoma camifax) at the Safari Land Pet Store.
  • Photo: An Indian golden oriole (Oriolus kundoo) at Pinola Conservancy.
  • A critically endangered (IUCN) and federally endangered California condor (Gymnogyps californianus) at the Phoenix Zoo.
  • A Texas horned lizard (Phrynosoma cornutum) at the Fort Worth Zoo.
  • Photo: A tiger loach (Syncrossus hymenophysa) at the Tennessee Aquarium in Chattanooga, Tennessee.
  • Photo: Emerald skink (Lamprolepis smaragdinus philippinensis) at Crocolandia in the Philippines.
  • A picture of a black-tailed prairie dog (Cynomys ludovicianus ludovicianus) at Zoo Atlanta.
  • Spiny-headed treefrog (Anotheca spinosa) from central America at Zoo Atlanta.
  • Photo: A vulnerable red eared guenon (Cercopithecus erythrotis) at Limbe Wildlife Center, a rescue and rehab center for wildlife in Limbe, Cameroon.
  • The juvenile phase of the lubber grasshopper, Romalea guttata.
  • A very ill, critically endangered (IUCN) and federally endangered Hawksbill sea turtle (Eretmochelys imbricata) at the Australia Zoo Wildlife Hospital.
  • Photo: Sickle crayfish, Cambarus reduncus, at West Liberty University in West Liberty, WV. This specimen is from Raleigh, NC.
  • Photo: A Brazilian rainbow boa (Epicrates cenchria) at the John Ball Zoo.
  • Picture of two rosy-faced lovebirds (Agapornis roseicollis) at the Lowry Park Zoo in Tampa, Florida.
  • A pair of Kootenai River white sturgeon (Acipenser transmontanus) at the Kootenai Tribal Hatchery. (US: Endangered)
  • A lesser flamingo (Phoeniconaias minor) at the Cleveland Metroparks Zoo.
  • Photo: A spoon head catfish (Planiloricaria cryptodon) at the Dallas World Aquarium.
  • Photo: An American barn owl (Tyto alba guatemalae) at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • Photo: Dwarf clawed frog (Hymenochirus boulengeri) at the Budapest Zoo.
  • Photo: A Mozambique tree agama lizard (Agama mossambica) from the Mt. Gorongosa range of the Mt. Gorongosa National Park, Mozambique.
  • Photo: A sandwich tern (Thalasseus sandvicensis) at the Marathon Wild Bird Center in Marathon, Florida.
  • Picture of a platypus (Ornithorhynchus anatinus) at the Healesville Wildlife Sanctuary.
  • Photo: A bighead carp (Hypophthalmichthys nobilis) at the Schramm Education Center near Gretna, NE.
  • Picture of a whooping motmot (Momotus subrufescens) at the National Aviary breeding center in Palmar, Colombia.
  • Photo: A finescale dace (Chrosomus neogaeus) at Schramm Education Center near Gretna, NE.
  • Photo: An eastern chipmunk (Tamias striatus griseus) at the Wildlife Rehab Center of Minnesota.
  • Photo: A comber (Serranus cabrilla) at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Photo: A WebsterÕs salamander (Plethodon websteri) at the Auburn University Natural History Museum.
  • Photo: Caper white butterfly (Belenois java) at Melbourne Zoo. This is a female.
  • Photo: A Dussumier's surgeonfish (Acanthurus dussumieri) at the Aquarium of Boise in Boise, Idaho.
  • Photo: A white-bellied bustard (Eupodotis senegalensis canicollis) at the Wadi Al Safa Wildlife Center in Dubai, United Arab Emirates.
  • Picture of a vulnerable Southern luzon phloeomys (Phloeomys cumingi) at the Plzen Zoo in the Czech Republic.
  • A narrow-bridged musk turtle (Claudius angustatus) at the Chapultepec Zoo in Mexico City.
  • Picture of a yellow-hooded blackbird (Chrysomus icterocephalus) at the National Aviary breeding center in Palmar, Colombia.
  • Picture of a leucistic color morph of the white-cheeked pintail (Anas bahamensis) at the Sylvan Heights Bird Park.
  • A giant hispanolian anole (Anolis ricordi) at the Omaha Zoo.
  • Photo: Western girdled lizard, Zonosaurus laticaudatus, at the Plzen Zoo.
  • Photo: A Harvestman spider (Leiobunum) at the Dallas Zoo.
  • Photo: A pair of banded tulip snails (Cinctura lilium) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A southern gerenuk (Litocranius walleri walleri) at Sheikh Butti bin Juma Al Maktoum Wildlife Centre in Dubai, United Arab Emirates.
  • A vulnerable (IUCN) and federally endangered Texas blind salamander (Eurycea rathbuni) at the Detroit Zoo.
  • Photo: A female Northern cardinal (Cardinalis cardinalis cardinalis) at the Carolina Waterfowl Rescue.
  • Photo: A small blue grecian (Heliconius sara sprucei) at the Butterfly Pavilion.
  • A scarlet betta (Betta coccina) from a private collection. This species is from Malaysia and Indonesia.
  • Photo: A galah, Eolophus roseicapilla.
  • Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.
  • Picture of a mandarinfish (Synchiropus splendidus) at Nebraska Aquatic Supply.
  • Photo: An Ozark hellbender (Cryptobranchus alleganiensis bishopi) at the St. Louis Zoo. This facility is famous for rearing hellbenders, but also for studying cures for chytrid (bd) fungus and other threats.
  • Photo: Darkling beetle Larvae (Zophobas morio) at Centro Jambatu in Quito, Ecuador.
  • Photo: Panama City crayfish (Procambarus econfinae) from the wild, caught near Panama City, Florida.
  • A picture of a Turanian viper (Macrovipera lebetina turanica) at the San Antonio Zoo.
  • Photo: A ‘blue jeans morph’ of strawberry poison dart frog, Oophaga pumilio, at Natura Eco Park.
  • Photo: A spotted python (Anaterisia maculosus) at the Lowry Park Zoo.
  • Photo: Mexican kingsnake (Lampropeltis ruthveni) at the Budapest Zoo.
  • Picture of a vulnerable Chinese goral (Naemorhedus griseus arnouxianus) at the Minnesota Zoo.
  • A picture of a panamint rattlesnake (Crotalus stephensi) at The Living Desert in Palm Desert, California.
  • A picture of a broadwing hawk (Buteo platypterus platypterus) at Raptor Recovery.
  • 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: Blackside darter (Percina maculata) at the Minnesota Dept. of Natural Resources Center for Aquatic Mollusk Programs.
  • Photo: Silver variation, red fox (Vulpes vulpes) named "Sterling" at Southwest Wildlife Conservation Center.
  • A ground beetle (Scarites quadriceps).
  • Photo: Least bittern heron (Ixobrychus exilis) at the Wildlife Rehabilitation Center in Roseville, Minnesota.
  • Photo: A striped ground squirrel (Euxerus erythropus) photographed at the Arabia’s Wildlife Centre.
  • Picture of a young eastern grey squirrel (Sciurus carolinensis carolinensis) at St. Francis Wildlife, a rehab center in Quincy, FL.
  • Picture of Lolita, a Panama yellow-headed amazon, (Amazona ochrocephala panamensis), at the Central Florida Zoo
  • Photo: A sheep crab (Loxorhynchus grandis) at California Science Center in Los Angeles, California.
  • Photo: Savanna monitor lizard (Varanus exanthematicus) at the Denver Zoo.
  • Photo: A pair of baltimore orioles (Icterus galbula) near Hudson, Wisconsin.
  • Photo: A red-legged thrush (Turdus plumbeus rubripes) at a private collection in Germany.
  • Photo: A Pallas's long-tongued bat (Glossophaga soricina) at Bat Jungle in Monteverde, Costa Rica,
  • Photo: A three-toed worm lizard (Bipes tridactylus) from a private collection in Billerbeck, Germany.
  • Albino green frog (Lithobates clamitans) at the National Aquarium in Baltimore.
  • Photo: An orange fronted fruit dove (Ptilinopus aurantiifrons) at the Plzen Zoo.
  • Photo: A female scarlet tanager (Piranga olivacea) at Rum River Central Park.
  • Photo: A Panacea fiddler crab (Uca panacea) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Picture of a common olivewing (Nessaea aglaura) at the Saint Louis Zoo.
  • Great Plains narrow-mouthed toad (Gastrophryne olivacea) at the Arizona-Sonora Desert Museum.
  • Photo: A Texas cave salamander (Eurycea neotenes) at the Detroit Zoo.
  • An endangered Carnaby's black cockatoo (Calyptorhynchus latirostris) at the Jurong Bird Park.
  • Picture of a chimney swift (Chaetura pelagica) at the WildCare Foundation.
  • Photo: A blue dyeing poison arrow frog (Dendrobates tinctorius sipaliwini) at the Omaha Henry Doorly Zoo and Aquarium.
  • Picture of a chestnut-breasted malkoha (Phaenicophaeus curvirostris singularis) at the Houston Zoo.
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • Photo: A red-headed agama (Agama picticauda) at the Toledo Zoo.
  • Photo: A horned grebe (Podiceps auritus cornutus) at the International Bird Rescue Center in San Pedro, CA. This species is listed as vulnerable by IUCN.
  • Photo: Pearly razorfish (Xyrichtys novacula) at the Albuquerque BioPark Aquarium.
  • Photo: Scarlet mormon (Papilio deiphobus rumanzovia) at the Jumalon Butterfly Sanctuary on Cebu Island in the Philippines.
  • Photo: An Atlantic cod (Gadus morhua) at the Maine State Aquarium.
  • Photo: West African gaboon viper (Bitis rhinoceros) at Zoo Atlanta in Atlanta, Georgia.
  • A picture of a coconut crab (Birgus latro) from Halmahera, Mollucas Island, Indonesia.
  • Hartlaub's turaco (Tauraco hartlaubi) at the Houston Zoo.
  • Photo: Dalmatian pelican (Pelecanus crispus) from Parc des Oiseaux in Villars Les Dombes, France.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • A smoky jungle frog (Leptodactylus pentadactylus) at Scaly Dave's Herp Shack.
  • Photo: An Eastern hinge-backed tortoise (Kinixys zombensis zombensis) at Turtle Island.
  • Photo: A juvenile Mentanani scops owl (Otus mantananensis romblonis) on Semirara Island in the Philippines.
  • Photo: Chevron cutworm moth (Diarsia intermixta) at Lilydale High School in Australia.
  • Picture of a masked cardinal (Paroaria nigrogenis) at the National Aviary breeding center in Palmar, Colombia.
  • Photo: A giant Blomberg toad (Rhaebo blombergi) at Centro Jambatu in Quito, Ecuador.
  • Horsehead grasshopper (Stiphra sp.) at the Bugarium at the Albuquerque BioPark.
  • 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: Hoffman's conure (Pyrrhura hoffmanni gaudens) at a private collection.
  • Photo: Western meadowlark (Sturnella neglecta) at Milford Nature Center.
  • An oblique syrphid fly (Allograpta obliqua) photographed at a studio in Lincoln, NE.
  • An endangered Mexican alligator lizard (Abronia graminea) at the St. Louis Zoo.
  • Photo: Venezuelan redstripe (Avicularia minatrix) at the Loveland Living Planet Aquarium in Draper, UT.
  • A captive, five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea. (IUCN: Vulnerable)
  • A red-eyed tree frog (Agalychnis callidryas) at the Sunset Zoo in Manhattan, Kansas.
  • Picture of a male and female Impala (Aepyceros melampus) at the Brevard Zoo.
  • Photo: Critically endangered citron crested cockatoos (Cacatua sulphurea citrinocristata) at Jurong Bird Park.
  • A picture of two splendid killifish (Aphanius splendens) at the Zoological Society of London.
  • A diamond python (Morelia spilota spilota) at the Gladys Porter Zoo in Brownsville, Texas.
  • A Western harvest mouse, Reithrodontomys megalotis.
  • Photo: A plumose anemone (Metridium farcimen) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: A red cattleheart butterfly (Parides photinus) at the Butterfly Pavilion in Westminster, Colorado.
  • A serrated-toed tree lizard (Holaspis guentheri) at the Chattanooga Zoo.
  • Photo: An oyster toadfish (Opsanus tau) at the Virginia Aquarium.
  • Picture of a federally endangered Ozark hellbender (Cryptobranchus alleganiensis bishopi), infected with chytrid fungus, at the St. Louis Zoo, St. Louis, Missouri.
  • An egg sack of a praying mantis (Mantis religiosa) at the Houston Zoo.
  • Photo: A lesser siren (Siren cf. intermedia) collected from a tributary of the Choctawhatchee River, Florida.
  • Photo: A butterfly mussel (Ellipsaria lineolata) at the Genoa National Fish Hatchery.
  • Photo: A Wiegmann’s alligator lizard (Gerrhonotus liocephalus) from a private collection in Billerbeck, Germany.
  • Photo: A green pricklenape (Acanthosaura capra) at Shirley Aquatics in Wythall, England.
  • Photo: Great mormon (Papilio memnon pryeri) at the San Antonio Zoo.
  • A vulnerable (IUCN) Madagascar painted frog (Mantella madagascariensis) from a private collection.
  • Southern leopard frog ( Lithobates sphenocephalus ) at the Denver zoo.
  • A Himalayan salamander (Tylototriton verrucosus) at the Sedgwick County Zoo.
  • A maize calligrapher hoverfly (Toxomerus politus) from near Adams, NE.
  • A common Myna or Indian Myna, (Acridotheres tristis tristis) from a private collection.
  • Picture of a satin bowerbird (Ptilonorhynchus violaceus) at Healesville Sanctuary.
  • European long-eared owl (Asio otus) from the Budapest Zoo.
  • Photo: A male brown woolly monkey (Lagothrix lagotricha lagotricha) named Cesar photographed at Amazon Shelter, a wildlife rescue, rehabilitation and release center in Tambopata, Peru.
  • Photo: A whitetail damselfish (Dascyllus aruanus) at the Zoological Society of London.
  • A big brown bat (Eptesicus fuscus fuscus) at Nebraska Wildlife Rehab.
  • Photo: Florida bush katydid (Stilpnochlora couloniana) at the Exmoor Zoo.
  • Photo: Purple mort bleu (Eryphanis polyxena) at Butterfly Pavilion in Westminster, Colorado.
  • Photo: An endangered Von der Decken's sifaka, Propithecus deckenii, at Lemuria Land.
  • A mountain pygmy possum (Burramys parvus) a critically-endangered mammal from Victoria, Australia.
  • A studio portrait of a gray short-tailed opossum (Monodelphis domestica).
  • Picture of a rainbow lorikeet (Trichoglossus moluccanus) at the Columbus Zoo.
  • Picture of a black narrow-mouthed frog (Ctenophryne aterrima) at the El Valle Amphibian Conservation Center (EVACC)
  • Photo: A male black grouse (Lyrurus tetrix tetrix) at Grouse Park Waterfowl in Cascade, Idaho.
  • Picture of a Burmese vine snake (Ahaetulla fronticincta) at the Woodland Park Zoo.
  • Southern crawfish frog (Lithobates (Rana) areolatus (areolata ssp.) photographed in a studio in Lincoln, NE.
  • Photo: A El Tambo marsupial frog (Gastrotheca elicioi) at Balsa de los Sapos.
  • Photo: Majorcan or Mallorcan midwife toad (Alytes muletensis) at the London Zoo.
  • Photo: Common crayfish (Cambarus bartonii) from the wild.
  • A picture of a striped skunk (Mephitis mephitis varians) at The Wildlife Center in New Mexico.
  • Picture of a silk worm (Bombyx mori) coccoon with a dead pupae next to it.
  • A critically endangered Florida bonneted bat (Eumops floridanus).
  • Photo: A long-spined sea urchins (Diadema antillarum) at Mote Tropical Research Laboratory.
  • Orlov's viper (Vipera orlovi) at the St. Louis Zoo.
  • An endangered Hermon Mountain viper (Vipera bornmuelleri) at the St. Louis Zoo.
  • Picture of a yellow-breasted ground-dove (Gallicolumba tristigmata) at the Houston Zoo.
  • Photo: A red-capped peregrine falcon (Falco peregrinus babylonicus) at the Dubai Falcon Hospital in Dubai, United Arab Emirates.
  • A red fox (Vulpes vulpes vulpes) at Nebraska Wildlife Rehab.
  • Photo: Wandering garter snake (Thamnophis elegans vagrans) at the Loveland Living Planet Aquarium in Draper, UT.
  • A federally endangered peregrine falcon (Falco peregrinus) at Raptor Recovery Nebraska.
  • A young female snowy owl (Bubo scandiacus).
  • A pair of gentoo penguins (Pygoscelis papua papua).
  • Photo: A nosy isopod (Armadillidium nasatum) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A guiña (Leopardus guigna tigrillo) whose name is Pikumche from Fauna Andina in central-south, Chile.
  • Common spider crab, also known portly spider crab or nine-spined spider crab (Libinia emarginata) at the Sedge Island Natural Resource Education Center in the Sedge Islands Marine Conservation Zone, Barnegat Bay, New Jersey.
  • Photo: Brown tawny rajah, Charaxes distanti, at Zoo Negara.
  • Photo: An adult Morocco lizard-fingered gecko (Saurodactylus brosseti) from a private collection.
  • New Guinea snapping turtle (Elseya novaeguineae) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: Mabu the giant armadillo (Priodontes maximus) at Zoo Brasilia.
  • Photo: An American crocodile (Crocodilus acutus) at the Omaha Zoo.
  • A picture of a female Andean cock-of-the-rock (Rupicola peruvianus sanguinolentus) at the Dallas World Aquarium.
  • Picture of a male green pygmy goose (Nettapus pulchellus) at Sylvan Heights Bird Park.
  • Photo: A colorful painted creekshell (Cambarunio taeniatus taeniatus) from North Fork Creek in Tennessee.
  • A juvenile westslope cutthroat trout (Oncorhynchus clarki lewisi). The species was denied listing under the ESA in 2003.
  • A picture of a male emu named Sydney (Dromaius novaehollandiae novaehollandiae) at Tracy Aviary in Salt Lake City, Utah.
  • Picture of a copperband butterflyfish (Chelmon rostratus) at Nebraska Aquatic Supply.
  • Photo: Leopard shark (Triakis semifasciata) photographed at Downtown Aquarium in Denver, Colorado.
  • Photo: A Marojejy leaf chameleon (Brookesia griveaudi) at the Bristol Zoo.
  • Photo: A Mexican narrow-mouthed toad, Hypopachus variolosus, at Natura Eco Park.
  • An endangered (IUCN) and federally endangered African wild dog (Lycaon pictus)
  • Photo: A Philippine hawk-owl (Ninox philippensis centralis) at Negros Forest Park.
  • A vulnerable red-breasted goose (Branta ruficollis) at the Sedgwick County Zoo in Wichita, Kansas.
  • A vulnerable chinchilla at the Sunset Zoo.
  • Photo: Critically endangered staghorn coral (Acropora cervicornis) at Butterfly Pavilion in Westminster, Colorado.
  • A cave salamander (Eurycea lucifuga) at the Tulsa Zoo, Tulsa, Oklahoma.
  • Photo: A critically endangered Siau Island tarsier (Tarsius tumpara) at Ragunan Zoo in Jakarta, Indonesia.
  • A mangrove snake (Boiga dendrophila melanota) at Zoo Atlanta.
  • A group of juvenile rainbow mussels (Villosa iris). They're part of a captive rearing project at the Missouri State University.
  • Photo: A brown hoplo (Hoplosternum littorale) from a private collection in Knoxville, Tennessee.
  • Tanimbar python (Simalia nauta) from a private collection.
  • Picture of a black-necked aracari (Pteroglossus aracari) at the Dallas World Aquarium.
  • Photo: A slender crayfish (Faxonius compressus) from East Fork Cane Creek in Lewis County, Tennessee.
  • Photo: A Peters' banded skink (Scincopus fasciatus) at Petra Aqua.
  • Photo: A juvenile big-eared opossum (Didelphis aurita) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • In vogue no more, the endangered grey gibbon (Hylobates muelleri muelleri) will not be seen in captivity much longer. There are now too few in captivity to keep their population sustained and too few in the wild to bring more in. With limited space and funding, zoos must make hard choices every year in deciding which species to breed and which to let go, or 'phase out'. Often zoos go with more showy species of primate to propagate, leaving the fate of the more drab species in question.
  • Photo: A golden mantella (Mantella aurantiaca) at Josh’s Frogs in Owosso, Michigan.
  • Photo: A Serengeti topi (Damaliscus jimela), formerly known as Damaliscus lunatus jimela, at the San Antonio Zoo.
  • Photo: An endangered Andean night monkey (Aotus miconax) at Parque de las Leyendas in Lima, Peru.
  • Photo: A European earwig (Forficula auricularia) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Photo: Short tailed parrot, Graydidascalus brachyurus, at Loro Parque Fundacion.
  • Photo: A Southwestern pond turtle (Actinemys pallida) named Emmy at Lindsay Wildlife Experience in California.
  • Photo: Oriole blackbird (Gymnomystax mexicanus) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • A bull trout (Salvelinus confluentus) from Bighorn Creek, part of the Kootenay River system. (IUCN: Vulnerable; US: Federally threatened)
  • A Southern screamer (Chauna torquata) at the Kansas City Zoo.
  • Photo: Golden winged parakeet (Brotogeris chrysoptera tuipara) or Tuipara parakeet at Loro Parque Fundacion.
  • An endangered golden lion tamarin (Leontopithecus rosalia rosalia) at the Cheyenne Mountain Zoo.
  • Photo: Veery (Catharus fuscescens) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • A picture of an African land snail (Lissachatina fulica) at Jurong Bird Park, part of Wildlife Reserves Singapore.
  • Photo: Guantanamo Anole (Anolis argenteolus) from a private collection.
  • A sunbittern (Eurypyga helias) at the Cincinnati Zoo.
  • Photo: A pair of dwarf white isopods (Trichorhina tomentosa) photographed at Josh’s Frogs in Owosso, Michigan.
  • Photo: A Trinidad pink dwarf tarantula (Holothele sanguiniceps) from a private collection.
  • Photo: Brown color phase of a female Usambara three-horned chameleon (Trioceros deremensis) from a private collection.
  • Photo: An endangered Sri Lankan elephant (Elephas maximus maximus) at Singapore Zoo.
  • A picture of a little blue heron (Egretta caerulea) at the National Aviary of Colombia.
  • Photo: A Mackinders eagle owl (Bubo capensis mackinderi) photographed at Rodbaston Animal Zone in Penkridge, England.
  • Picture of a tapajos red head (Geophagus sp. "Tapajos") at Pure Aquariums.
  • Photo: A spectacled owl (Pulsatrix perspicillata chapmani) at Zoologico de Quito.
  • Snakeskin gourami (Trichopodus pectoralis) at Zoo Negara.
  • Photo: A barred rail (Hypotaenidia torquata torquata) on Semirara Island in the Philippines.
  • Photo: A western rosella, Platycercus icterotis, at the Blank Park Zoo in Des Moines, Iowa.
  • Photo: Yellowfin goby (Acanthogobius flavimanus) at East Bay Regional Park District.
  • Photo: A white-faced marmoset (Callithrix geoffroyi) named Spanky at the University of Nebraska, Omaha.
  • Photo: Spotted bass (Micropterus punctulatus) at East Bay Regional Park District.
  • Photo: A Western yellow-bellied toad (Bombina variegata variegata) from a private collection in Goerlitz, Germany.
  • Photo: Wild nightcrawlers (Lumbricus terrestris) caught in Lincoln, Nebraska.
  • Photo: Green-and-black poison dart frog (Dedrobates auratus) at the Sedgwick County Zoo in Wichita, Kansas.
  • An endangered tasmanian devil (Sarcophilus harrisii) at the Australia Zoo.
  • Photo: Red tailed amazon, Amazona brasiliensis, at Loro Parque Fundacion.
  • Photo: A Gaboon caecilian, Geotrypetes seraphini, at the Sedgwick County Zoo.
  • Photo: A green bright eyed frog (Boophis viridis) wild caught in Andasibe, Madagascar.
  • A picture of a masked lapwing chick (Vanellus miles novaehollandiae) from Australia.
  • Photo: A critically endangered southern river terrapin (Batagur affinis) at the San Antonio Zoo.
  • Photo: A male and female pin-tailed parrotfinch (Erythrura prasina prasina) at Penang Bird Park.
  • Picture of a Patagonian crested duck (Lophonetta specularioides specularioides) at the Sylvan Heights Bird Park.
  • A Pacific blood star (Henricia leviuscula) at the Indianapolis Zoo.
  • Photo: A Robert Mertens' day gecko (Phelsuma robertmertensi) at the Plzen Zoo.
  • Photo: Eurasian great grey owl (Strix nebulosa lapponica) from Plzen Zoo in the Czech Republic.
  • A picture of a pipevine swallowtail (Battus philenor) at the Lincoln Children's Zoo. This species is not native to Nebraska and is found in eastern and southern U.S.
  • Marbled or bird dropping frogs (Hyla marmorata) from a private collection.
  • Photo: Crowned lapwing (Vanellus coronatus) at the Exmoor Zoo in England.
  • Picture of a Western terrestrial garter snake or upper basin garter snake (Thamnophis elegans vagrans) from the wild in Utah.
  • Picture of an Atlantic giant cockle (Dinocardium robustum) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • Photo: A Mexican black tailed rattlesnake (Crotalus nigriscens) at Reptile Gardens.
  • Photo: Yellow burrowing scorpion (Scorpio maurus) at the University of Porto in Portugal
  • A picture of a two-striped forest pitviper (Bothrops bilineata) at the Fort Worth Zoo.
  • Photo: South Diamond Gila trout (Oncorhynchus gilae gilae) at Mora National Fish Hatchery.
  • Photo: Western corn rootworm beetle (Diabrotica virgifera virgifera) at the University of Florida at Gainesville.
  • The abdomen of a banded garden spider (Agriope trifasciata) found at Spring Creek Prairie near Denton, Nebraska.
  • Photo: A thick-legged hoverfly (Syritta pipiens) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A chipping sparrow (Spizella passerina passerina) at Bay Beach Wildlife Sanctuary
  • Photo: Oriole warbler (Hypergerus atriceps) at the Oklahoma City Zoo.
  • Photo: A brown-spotted spinefoot (Siganus stellatus) at The National Aquarium in Abu Dhabi, United Arab Emirates.
  • Picture of a lake duck (Oxyura vittata) at Sylvan Heights Bird Park.
  • Photo: Blue bellied parrots, Triclaria malachitacea, at Loro Parque Fundacion.
  • Photo: Pied-billed grebe (Podilymbus podiceps) from Nebraska Wildlife Rehab in Omaha, Nebraska.
  • Photo: A plains least weasel (Mustela nivalis campestris) at Nebraska Wildlife Rehab in Omaha, Nebraska, USA. This weasel is a male and is in its white winter coat.
  • Photo: Northern redbelly dace (Chrosomus eos) at the University Lab at the University of Minnesota in St. Paul.
  • Photo: Gigi, a two-week-old Japanese macaque (Macaca fuscata) at the Blank Park Zoo in Des Moines, IA. She is being hand-raised for the first couple months because her mom wouldn't nurse her.
  • An endangered Riobamba marsupial frog (Gastrotheca riobambae) at Pontificia Universidad Catolica.
  • Photo: An endangered northern rockhopper penguin (Eudyptes moseleyi) at the Calgary Zoo in Alberta, Canada.
  • Photo: A critically endangered Javan green magpie (Cissa thalassina) in a blue color phase at Taman Safari.
  • Photo: A laggar falcon (Falco jugger) named Ricin at The International Centre for Birds of Prey in England.
  • Photo: An orange pavona coral (Pavona maldivensis) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: A Gila monster (Heloderma cinctum) at Reptile Gardens.
  • Picture of a green aracari (Pteroglossus viridis) at the Lowry Park Zoo.
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • A chocolate chip sea star, Protoreaster nodosus.
  • A rough-skinned newt (Taricha granulosa) at the Oregon Zoo.
  • Photo: A half-day-old hatchling leatherback turtle (Dermochelys coriacea) from Bioko Island.
  • A picture of a white-eared honeyeater (Nesoptilotis leucotis leucotis) at the Healesville Sanctuary.
  • Plains leopard frog (Lithobates blairi) at Fenton Farm.
  • Picture of a green kingfisher (Chloroceryle americana cabanisii) at the National Aviary of Colombia.
  • Picture of a Sulawesi ground dove (Gallicolumba tristigmata bimaculata) at the Plzen Zoo.
  • Photo: Northern Spotted Owl (strix occidentalis caurina) at the University of California, Davis California Raptor Center.
  • Photo: A juvenile large-headed capuchin monkey (Sapajus macrocephalus) from the Coari area of Amazona, Brazil.
  • Spotted ground squirrel (Spermophilus spilosoma) at The Wildlife Center in Espanola, New Mexico.
  • A seven spotted cockroach (Therea petiveriana) at the Audubon Insectarium in New Orleans.
  • Eastern grasshopper sparrow (Ammodramus savannarum perpallidus) at the Nashville Zoo.
  • An endangered (IUCN) and federally endangered Higgins eye pearly mussel (Lampsilis higginsii) at the Genoa National Fish Hatchery, Genoa, Wisconsin.
  • A Colorado pikeminnow (Ptychocheilus lucius) from the Colorado River. (IUCN: Vulnerable, US: Endangered)
  • Photo: A neotropical tiger beetle (Pseudoxychelia quechua) at Museo De Historia Natural "Alcide d'Orbigny".
  • A picture of a least sandpiper (Calidris minutilla) at Iowa Bird Rehabilitation in Des Moines, IA.
  • Photo: An unidentified caterpillar from the wild photographed at Centro de Rescate Amazonico in Iquitos, Peru.
  • Photo: An adult Morocco lizard-fingered gecko (Saurodactylus brosseti) from a private collection.
  • Picture of a wood duck (Aix sponsa) at the Lincoln Children's Zoo.
  • Photo: A female Kordofan aoudad (Ammotragus lervia) at the San Diego Zoo Safari Park in Escondido, California.
  • Photo: A chumphon scorpion (Scorpiops phatoensis) at Verve Biotech in Waverly, Nebraska.
  • Photo: A wingless bat fly (Nycteribia parilis vicaria) that lives on the southern bent-winged bat (Miniopterus orianae bassanii) at Victoria, Australia.
  • Photo: A fat-tailed scorpion (Hottentotta pellucidus) at Verve Biotech in Waverly, Nebraska.
  • A pair of bat-eared foxes (Otocyon megalotis megalotis) at the Omaha Zoo.
  • Photo: A male Sacramento mountain salamander (Aneides hardii) at ABQ BioPark.
  • A yellow-fronted bumble bee (Bombus flavifrons) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Picture of a spotted python (Antaresia maculosa) from a private collection.
  • Picture of a vulnerable (IUCN) and federally threatened Florida scrub jay (Aphelocoma coerulescens).
  • Photo: A critically endangered female Burmese roofed turtle (Batagur trivittata) at the Singapore Zoo.
  • A picture of a masked lapwing chick (Vanellus miles novaehollandiae) from Australia.
  • Photo: A female highland bronze green-and-black poison dart frog (Dendrobates auratus) at Josh’s Frogs in Owosso, Michigan.
  • Picture of an endangered Asian elephant (Elephas maximus).
  • Picture of a Santa Cruz gopher snake (Pituophis catenifer pumilus) at the Santa Barbara Zoo.
  • Picture of a vulnerable (IUCN) and federally endangered Southern Africa King cheetah (Acinonyx jubatus jubatus) named George at Zoo Miami.
  • Photo: A critically endangered Cuban gar (Atractosteus tristoechus) photographed at the ‘Gar Lab’ of the Nicholls State University, in Thibodaux, Louisiana.
  • Picture of a golden-headed lion tamarin (Leontopithecus chrysomelas) at the Riverside Zoo. (IUCN: Endangered)
  • Photo: A fat-tailed scorpion (Hottentotta pellucidus) at Verve Biotech in Waverly, Nebraska.
  • Photo: A cord grass barnacle (Chthamalus fragilis) photographed at Gulf Specimen Marine Lab and Aquarium.
  • A marbled newt (Triturus marmoratus) at the Houston Zoo.
  • Photo: A damselfly larvae in the family Conagrionidae at the Pontotoc Ridge Preserve near Connerville, OK.
  • Picture of a Radjah shelduck (Tadorna radjah) at Sylvan Heights Bird Park.
  • Photo: Red-billed quelea (Quelea quelea) in Choussy, France.
  • Picture of a song sparrow (Melospiza melodia montana) from the wild in Utah.
  • Picture of a titan triggerfish, Balistoides viridescens, at Shark Reef Aquarium.
  • A critically endangered (IUCN) and federally endangered Cuban crocodile (Crocodylus rhombifer).
  • A pocket mouse (Chaetodipus sp.) at the Omaha Zoo.
  • Photo: A convergent ladybird beetle (Hippodamia convergens) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • Photo: A Sydney funnelweb spider (Atrax robustus) at the Taronga Zoo.
  • Vervet monkeys (Chlorocebus pygerythrus pygerythrus) at the Columbus Zoo.
  • Photo: A vulnerable rufous mouse lemur (Microcebus rufus) at the Parc Botanique Et Zoologique de Tsimbazaza.
  • Picture of a spectacled duck (Speculanas specularis) at the Sylvan Heights Bird Park.
  • Picture of an endangered Meller's duck (Anas melleri) at the Sylvan Heights Bird Park.
  • A near threatened four-lined ratsnake (Elaphe quatuorlineata quatuorlineata) at the Rome Zoo.
  • Photo: A critically endangered Starrett’s frog (Isthmohyla tica) from the wild near the town of La Libia, Costa Rica.
  • A Mississippi mud turtle (Kinosternon subrubrum hippocrepis) at Millard's Turtle Farm, Birmingham, Iowa.
  • Picture of a polka-dot batfish (Ogcocephalus cubifrons) at Gulf Specimen Marine Lab and Aquarium.
  • A Reisinger's tree monitor (Varanus reisingeri) at the Fort Worth Zoo.
  • Photo: A female rhinoceros katydid nymph (Copiphora rhinoceros) from the Tapir Valley of Costa Rica.
  • Photo: A critically endangered Javan slow loris (Nycticebus javanicus) at Jakarta Natural Resource Conservation Center in Indonesia.
  • Photo: Yellow-bellied house gecko (Hemidactylus flaviviridis) at Wroclaw Zoo.
  • Picture of endangered Malagasy rainbow frogs (Scaphiophryne gottlebei) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • A picture of a brahminy starling (Sturnia pagodarum) from a private collection.
  • Photo: A jazzy leafwing butterfly (Hypna clytemnestra) at the Butterfly Pavilion in Westminster, Colorado.
  • Photo: A unidentified northern caddisfly (Limnephilus sp.) in a protective case it made out of leaves to hide itself in a stream, collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Davis, West Virginia.
  • A picture of an oriental pied hornbill (Anthracoceros albirostris albirostris) at the Assam State Zoo in Guwahati, Assam, India.
  • Photo: A taxidermy mount of Martha, the last passenger pigeon (Ectopistes migratorius). She died in 1913 at the Cincinnati Zoo, and with that, her species became extinct.
  • Photo: Red tree frog (Leptopelis rufus) collected near Manjo, Cameroon.
  • Photo: Southern Idaho ground squirrel (Urocitellus brunneus endemicus) at Zoo Boise
  • Picture of a garibaldi fish (Hypsypops rubicundus) at the REEF, at the University of California, Santa Barbara.
  • An eyelash viper (Bothriechis schlegelii) at Reptile Gardens.
  • Picture of a spine-waisted ant (Aphaenogaster texana) at the Dallas Zoo.
  • Photo: Striped flying barb (Esomus metallicus) at Zoo Negara.
  • Photo: A hawfinch (Coccothraustes coccothraustes coccothraustes) at Centro Fauna Selvatica "Il Pettirosso".
  • A European sea bass (Dicentrarchus labrax) at the Littoral Station of Aguda, Portugal.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild) .
  • A picture of a Malaysian spotted tree frog (Nyctixalus pictus) from a private collection.
  • Photo: An Apalachee shiner (Pteronotropis grandipinnis) from a private collection in Knoxville, Tennessee.
  • Picture of a rusty-spotted genet or Central African large-spotted genet (Genetta maculata) at the Miller Park Zoo.
  • Western hooded scaly-foot legless lizard (Pygopus nigriceps) at Lilydale High School in Australia.
  • Diamond fingerfish (Monodactylus argenteus) at the Oklahoma City Zoo.
  • Photo: A corsac fox (Vulpes corsac) at Zoopark Zajezd.
  • Photo: A female Puerto Rican crested toad (Peltophryne lemur) at the North Carolina Zoo in Asheboro, North Carolina.
  • Photo: Pacific brant goose (Branta bernicla orientalis) at Monticello Center in Italy.
  • A picture of a Mexican blindcat (Prietella phreatophila) at the Conservation Department of the San Antonio Zoo. This species is vulnerable on the IUCN Red List as well as on the US Federal list.
  • Photo: An Egyptian fruit bat (Rousettus aegyptiacus) named Stanley at Omaha’s Henry Doorly Zoo and Aquarium in Omaha, Nebraska.
  • Photo: A Senorita (Oxyjulis californica) at the Downtown Aquarium in Denver, Colorado.
  • Photo: A male Sacramento mountain salamander (Aneides hardii) at ABQ BioPark.
  • Photo: South African pygmy mouse (Mus minutoides) at the Plzen Zoo in the Czech Republic.
  • A gecko (Hemidactylus fasciatus) from Bioko Island, Equatorial Guinea.
  • Photo: A female sand cat (Felis margarita harrisoni) named Najma at the North Carolina Zoo in Asheboro, North Carolina.
  • Photo: A small spine sea star (Echinaster spinulosus) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Conglutinates of a longsolid mussel (Fusconaia subrotunda) at the Marion Conservation Aquaculture Center.
  • Photo: An Andean fox (Lycalopex culpaeus culpaeus) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • Photo: A mane crayfish, Procambarus lophotus, at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Photo: A Javan black-and-white giant squirrel (Ratufa bicolor bicolor) at the Emirates Parks Zoo in Abu Dhabi, United Arab Emirates.
  • Photo: Kelp greenling (Hexagrammos decagrammus) at East Bay Regional Park District.
  • A superb starling (Lamprotornis superbus) at the Omaha Zoo.
  • Photo: EdwardÕs fig parrot (Psittaculirostris edwardsii) at Loro Parque Fundacion.
  • Photo: A diving lizard or mophead iguana (Uranoscodon superciliosus) from the wild in Manaus, Brazil.
  • A picture of a corn snake (Pantherophis guttatus) at the Kansas City Zoo.
  • Photo: A blue ridge coral (Heliopora coerulea) at the Butterfly Pavilion.
  • Photo: Chrome roach (Gyna caffrorum) at the Budapest Zoo.
  • Picture of a coconut lorikeet (Trichoglossus haematodus haematodus) at the Kansas City Zoo.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: A critically endangered pygmy sculpin (Cottus paulus) at the Fish Biodiversity Lab, Auburn University, Auburn, Alabama.
  • Photo: A blue diamond tetra (Alestopeteisius smykalai) at the Singapore Zoo's River Safari area.
  • A maize calligrapher hoverfly (Toxomerus politus) from near Adams, NE.
  • Photo: A male chestnut-bellied sandgrouse (Pterocles exustus erlangeri) at the Wadi Al Safa Wildlife Center in Dubai, United Arab Emirates.
  • Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.
  • Photo: A western diamondback rattlesnake (Crotalus atrox) at Reptile Gardens.
  • Madagascar giant hognose snake (Leioheterodon madagascariensis) at the Detroit Zoo.
  • Photo: A Western spotted dove (Streptopelia suratensis) at the Plzen Zoo in the Czech Republic.
  • Photo: A roadside hawk (Rupornis magnirostris occiduus) at Huachipa Zoo in Lima, Peru.
  • Photo: A pair of banded topminnows (Fundulus cingulatus) from a private collection in Knoxville Tennessee.
  • Photo: A male fantail darter (Etheostoma flabellare) photographed at the Aquatic Resource Recovery Center at White Sulphur Springs National Fish Hatchery.
  • Photo: Angled crayfish, Cambarus angularis, at West Liberty University in West Liberty, WV. This specimen is from Clinch River, VA.
  • An ocelot (Leopardus pardalis)
  • Picture of a male plum-head parakeet (Psittacula cyanocephala) at Pandemonium Aviaries in Los Altos Hills, California.
  • Oriental fire-bellied toad (Bombina orientalis) at the Denver Zoo.
  • Picture of a fan-belly leatherjacket (Monacanthus chinensis) at Omaha's Henry Doorly Zoo and Aquarium.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • A picture of a Sri Lankan junglefowl (Gallus lafayettii) at Prague Zoo.
  • Rubber boa (Charina bottae) at the Tulsa Zoo.
  • Photo: A blunt face shiner (Cyprinella camura) at the Oklahoma City Zoo.
  • Photo: A silver perch (Leiopotherapon plumbeus) at the University of the Philippines.
  • Photo: A pyjama shark (Poroderma africanum) at Loveland Living Planet Aquarium.
  • Picture of a Lubbock's wrasse (Cirrhilabrus lubbocki) at Pure Aquariums.
  • A razorback sucker (Xyrauchen texanus), from the Colorado River System. (US: Endangered; IUCN: Critically endangered)
  • Photo: A male critically endangered southern helmeted curassow (Pauxi unicornis) at the Dallas World Aquarium.
  • Photo: A female Tundra peregrine falcon (Falco peregrinus calidus) photographed at the Dubai Falcon Center in Dubai, United Arab Emirates.
  • A picture of a magpie shrike (Urolestes melanoleuca) at the Houston Zoo.
  • Photo: Two Goliath beetles (Goliathus goliatus) at the Bugarium, a part of the ABQ BioPark.
  • Photo: A pacific banana slug (Ariolimax columbianus) at Northwest Trek Wildlife Park in Eatonville, Washington.
  • Photo: A critically endangered Javan slow loris (Nycticebus javanicus) at Jakarta Natural Resource Conservation Center in Indonesia.
  • Photo: Critically Endangered Bandula barb (Pethia bandula) at the Plzen Zoo. This is the Photo Ark's 9,000th species!
  • A harlequin frog (Atelopes varius) at the Omaha Zoo. This species, from Panama, is now thought to be extinct in the wild. With only 300 or so in captivity, it is thought to be one of the rarest amphibians in the world.
  • Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.
  • Photo: A blue crayfish or Peninsula crayfish (Procambarus paeninsulanus) at the Oklahoma Aquarium.
  • A scissor grinder cicada (Neotibicen pruinosus) in Lincoln, NE.
  • An endangered (IUCN) and federally endangered aquatic box turtle (Terrapene coahuila) at the Detroit Zoo.
  • Photo: Southern pill woodlouse (Armadillidium depressum) at the Exmoor Zoo.
  • Sun conure (Aratinga solstitialis) at the Bramble Park Zoo.
  • A piping plover (Charadrius melodus). (US: Endangered)
  • A spotted turtle (Clemmys guttata) at Omaha's Henry Doorly Zoo. (IUCN: Vulnerable)
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at Josh’s Frogs in Owosso, Michigan.
  • The federally endangered Iowa Pleistocene Snail (Discus macclintocki). This is a relict from the last ice age, some 400,000 years ago. It lives in cold air vents on 37 different hillsides in Iowa (and one in Illinois) and survives only in the cold air that blows past underground ice and out of the cracks in limestone cliffs.
  • Photo: A male common hamster (Cricetus cricetus) from the wild near Thuringia, Germany.
  • A yellow fantasticus poison dart frog (Ranitomeya summersi).
  • A Guam rail (Hypotaenidi owstoni) at the Sedgwick County Zoo, Wichita, Kansas. Though reintroduction efforts are underway, this species is considered extinct in the wild (IUCN) and federally endangered.
  • Photo: Omani spiny-tailed lizard (Uromastyx thomasi) at Wroclaw Zoo. This species is listed as vulnerable by the IUCN.
  • A tiger rat snake (Spilotes pullatus) profile at the Gladys Porter Zoo.
  • Picture of a vulnerable Gray's monitor (Varanus olivaceus) at the Oklahoma City Zoo.
  • A picture of an African palm weevil (Rhynchophorus phoenicis) from Bioko Island, Equatorial Guinea.
  • A red legged frog (Rana aurora) at the Oregon Zoo.
  • A picture of a cliff swallow (Petrochelidon pyrrhonota pyrrhonota) at Bay Beach Wildlife Sanctuary.
  • Eastern grasshopper sparrow (Ammodramus savannarum perpallidus) at the Nashville Zoo.
  • Photo: A Saker falcon (Falco cherrug cherrug) photographed at the Dubai Falcon Center in Dubai, United Arab Emirates.
  • Picture of an Abyssinian ground hornbill (Bucorvus abyssinicus) at the Denver zoo, Denver, Colorado.
  • Photo: Two endangered Kloss's gibbons (Hylobates klossii) at Taman Safari in Bogor, West Java, Indonesia.
  • Armenian viper (Montivipera raddei) at the St. Louis Zoo.
  • An Asian forest scorpion (Heterometrus longimanus) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A female slaty skimmer dragonfly (Libellula incesta) caught in the Tide Swamp Unit of Big Bend Wildlife Management Area.
  • Photo: A two-spotted ground beetle (Anthia thoracica) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • Photo: A slender-tailed meerkat (Suricata suricatta) at the Miller Park Zoo. She is very curious and inquisitive and will chase crickets all over the exhibit to catch and eat.
  • Picture of a rainforest scorpion (Liocheles waigiensis) at Wild Life Sydney Zoo.
  • New River morph of a dyeing poison frog (Dendrobates tinctorius) from a private collection.
  • Photo: A water bug with eggs (Belostoma flumineum) at the Bugarium, a part of the ABQ BioPark.
  • Photo: Brown necked parrot, Poicephalus robustus, at Loro Parque Fundacion.
  • Ring-tailed lemurs (Lemur catta) at the Lincoln Children's Zoo.
  • A confused eusarca moth (Eusarca confusaria), from Cross Lake, Minnesota.
  • Photo: Malayan krait or blue krait (Bungarus candidus) at the Sedgwick County Zoo. Drop for drop, the venom of this snake is among the deadliest in the world.
  • Photo: A spotted dusky salamander (Desmognathus conanti) at the Auburn University Natural History Museum.
  • Photo: Malayan krait (Bungarus candidus) from a private collection.
  • Photo: A female American rubyspot damselfly (Hetaerina americana) at Cedar Point Biological Station.
  • Photo: A Conant’s mushroom-tongue salamander (Bolitoglossa conanti) at the Toledo Zoo. This species is listed as vulnerable by IUCN.
  • Photo: Central Plains milk snake (Lampropeltis triangulum gentilis) collected in Jefferson County, Nebraska.
  • Photo: A juvenile great blue heron (Ardea herodias wardi) at the Chintimini Wildlife Center in Corvallis, Oregon.
  • Photo: Two ringed salamanders (Ambystoma annulatum) at the Amphibian Foundation.
  • Photo: A stick insect (Orthomeria kangi) at the University of the Philippines.
  • A white pelican (Pelecanus erythrorhynchos).
  • Photo: A pair of four-week-old old Asian leopard cats, (Prionailurus bengalensis bengalensis). These two were found abandoned by their mother a couple days ago in a burning field and brought to the Angkor Centre for Conservation of Biodiversity (ACCB), a wildlife rehab center in Siem Reap, Cambodia.
  • An El Cope morph of the green and black poison dart frog (Dendrobates auratus). This animal is a descendant of the few remaining animals in El Cope National Park in Panama, where the chytrid fungus may wipe out the animal at any time.
  • Photo: Queen yellowjacket (Vespula squamosa) at the Audubon Insectarium.
  • Photo: A Middle East gold (Chaetopelma gracile) from a private collection.
  • Gopher frog (Lithobates capito) at the Lowry Park Zoo in Tampa, FL.
  • A picture of a northern copperhead (Agkistrodon contortrix) at Reptile Gardens.
  • Photo: Harlequin racerunner (Plica plica) at the Nashville Zoo.
  • Photo: A checkerboard worm lizard (Trogonophis wiegmanni elegans) from a private collection in Billerbeck, Germany.
  • Photo: An unidentified green-winged stonefly nymph (Isoperla sp.), aquatic invertebrate from Mores Creek near Idaho City, Idaho.
  • Picture of an endangered Asian elephant (Elephas maximus) with handler.
  • A picture of two juvenile brown-throated sloths (Bradypus variegatus) at Toucan Rescue Ranch in San Josecito, Costa Rica.
  • Photo: An Aldabra giant tortoise (Aldabrachelys gigantea gigantea) at Tsimbazaza Zoo.
  • Picture of an Eastern ribbon snake or common ribbon snake (Thamnophis saurita saurita) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Common wall gecko (Tarentola mauritanica mauritanica) at University of Porto, in Portugal
  • A Sumatran blood python (Python curtus) at Zoo Atlanta.
  • Photo: A Red Sea ghost crab (Ocypode saratan) at the Sharjah Aquarium in Sharjah, United Arab Emirates.
  • Photo: An unidentified spiketail dragonfly nymph (Cordulegastridae sp.) collected by the West Liberty University Crayfish Conservation Lab. This insect was collected from Davis, West Virginia.
  • Photo: A Pilbara rock monitor (Varanus pilbarensis) at the Toledo Zoo.
  • Photo: A schooling bannerfish (Heniochus diphreutes) at Omaha’s Henry Doorly Zoo & Aquarium.
  • Photo: An unidentified tooth coral (Galaxea sp.) at the Akron Zoo.
  • Photo: A nimble spray crab (Percnon gibbesi) at Riverbanks Zoo and Garden.
  • Photo: A wet forest toad, Incilius melanochlorus, at Natura Eco Park.
  • Picture of a red-cheeked mud turtle (Kinosternon scorpioides cruentatum) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Photo: A yellow-spotted moray eel (Echidna xanthospilos) photographed at the National Aquarium in Abu Dhabi, United Arab Emirates.
  • Photo: Mozambique girdled lizard [Smaug mossambicus) at the Sedgwick County Zoo.
  • Photo: A tayra (Eira barbara poliocephala) photographed at the Alexandria Zoological Park in Alexandria, Louisiana.
  • Photo: Black hornbill, Anthracoceros malayanus, at Zoo Negara.
  • Picture of a four-week old, male leopard cat (Prionailurus bengalensis chinensis).
  • Miami blue butterfly (Cyclargus thomasi bethunebakeri). This species is being captive bred at the McGuire Center at the Univ. of Florida. Thousands have been released into the wild in South Florida over the past three years. So far, results are indeterminate. Fewer than 250 exist in the wild, making it one of the rarest butterflies in North America.
  • Photo: Siberian flying squirrel (Pteromys volans) at the Moscow Zoo.
  • Photo: A Zarudny’s worm lizard (Diplometopon zarudni) from a private collection in Billerbeck, Germany.
  • Photo: A Merrem's Madagascar swift, Oplurus cyclurus, at the Plzen Zoo.
  • A web-footed gecko (Palmatogecko rangei) at the Omaha Zoo. This species evolved webbing on the feet so it can travel over the sand dunes of Namibia with ease.
  • Photo: Tail of a red tailed amazon (Amazona brasiliensis) at Loro Parque Fundacion.
  • Great Plains narrow-mouthed toad (Gastrophryne olivacea) at the Arizona-Sonora Desert Museum.
  • A short-tailed weasel (Mustela erminea cicognanii) at the New York State Zoo.
  • Photo: Silver-striped charaxes (Charaxes lasti) at Butterfly Pavilion.
  • Photo: Cairns birdwing caterpillar (Ornithoptera euphorion) at Melbourne Zoo.
  • Photo: African mantis (Hierodula gracilis) at the Moscow Zoo.
  • Photo: A black hairy thick-tailed scorpion (Parabuthus villosus) at the Moscow Zoo.
  • Photo: Seed bug (Spilostethus pandurus) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A vulnerable Madagascar ground gecko (Paroedura vazimba) at the Plzen Zoo.
  • The pupal stage of an atlas beetle (Chalcosoma atlas) at the Omaha Henry Doorly Zoo, Omaha, Nebraska.
  • Photo: A male Florida reef gecko (Sphaerodactylus notatus) at Josh’s Frogs in Michigan.
  • A studio portrait of a vulnerable (IUCN) male lesser prairie-chicken (Tympanuchus pallidicinctus) that was caught to be radio collared.
  • An endangered female Indian rhinoceros (Rhinoceros unicornis) at the Fort Worth Zoo.
  • Picture of bonnet macaques (Macaca radiata) at Kamla Nehru Zoological Garden, Ahmedabad, India.
  • A vulnerable 1-year-old fossa, Cryptoprocta ferox, at the Omaha Zoo. This is Madagascar's largest mammalian predator, and its numbers are declining in the wild.
  • Photo: A common rain frog (Craugastor fitzingeri) from the Tapir Valley, Costa Rica.
  • Picture of an undescribed harlequin frog (Atelopus species) from Suriname.
  • Photo: A female Arabian eagle-owl (Bubo (africanus) milesi) at the Kalba Bird of Prey Centre in Fujairah, United Arab Emirates.
  • Photo: An Arabian angelfish (Pomacanthus asfur) at Omaha’s Henry Doorly Zoo & Aquarium.
  • Photo: Kira, a 12 year old short-eared dog (Atelocynus microtis) at the Taricaya Eco Reserve in Puerto Maldonado.
  • Picture of a halloween pennant dragonfly (Celithemis eponina) wild caught at Kissimmee Prairie Preserve State Park, Okeechobee, Florida.
  • Photo: A slender mongoose (Galerella sanguinea) at the Plzen Zoo.
  • Photo: A Central American dwarf boa (Ungaliophis continentalis) at Omaha’s Henry Doorly Zoo and Aquarium in Omaha, Nebraska.
  • Photo: A channel catfish (Ictalurus punctatus) at the Genoa National Fish Hatchery.
  • An endangered African penguin, also known as jackass or black-footed, (Spheniscus demersus) at the Bramble Park Zoo.
  • Photo: Chaco owl (Strix chacoensis) at Monticello Center in Italy.
  • Photo: A juvenile downy woodpecker (Dryobates pubescens gairdnerii) at Portland Audubon Wildlife Care Center in Portland, Oregon.
  • Photo: A spiny slipper limpet (Bostrycapulus aculeate) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Photo: An ornate hawk-eagle (Spizaetus ornatus ornatus) at the El Huayco Research and Raptor Breeding Center in Lima, Peru.
  • Photo: A red squirrel (Sciurus vulgaris fuscoater) at Zoopark Zajezd.
  • A Norhayati's flying frog (Rhacophorus norhayatii) from a private collection.
  • Photo: A Salado salamander (Eurycea chisholmensis) at the Conservation Department of the San Antonio Zoo. This species is listed as vulnerable on the IUCN Red List.
  • Photo: An adult spotted gar (Lepisosteus oculatus) photographed at the ‘Gar Lab’ of the Nicholls State University.
  • Picture of a white-throated capuchin (Cebus capucinus capucinus) named Buster at the Santa Fe College Teaching Zoo.
  • Picture of a magnificent frigatebird (Fregata magnificens rothschildi) at the National Aviary breeding center.
  • An eastern coachwhip (Masticophis flagellum flagellum) from a private collection.
  • Photo: A Southern smooth snake (Coronella girondica) at Centro Fauna Selvatica "Il Pettirosso".
More images
Loading more images…