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

Explore the Photo Ark

Search the 42,659-picture Photo Ark for an animal or species. Scroll down to see every species in the Ark … if you’ve got all day.

  • 13,289 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
  • A Cuban knight anole (Anolis equestris) at the Houston Zoo.
  • A Southern screamer (Chauna torquata) at the Kansas City Zoo.
  • Photo: A sea spider (Maja brachydactyla) at the Littoral Station of Aguda, Portugal.
  • Photo: A male broad-tailed hummingbird (Selasphorus platycercus) at the Greenwood Wildlife Rehabilitation Center in Longmont, Colorado.
  • Photo: A Western screech owl (Megascops kennicottii) at the North Somerset Bird of Prey Centre in North Somerset, United Kingdom.
  • An endangered (IUCN) and federally endangered Eastern Pacific green sea turtle (Chelonia mydas).
  • A superb bird of paradise (Lophorina superba) displays iridescent chest feathers at the Houston Zoo.
  • A critically endangered (IUCN) and federally endangered, injured Kemp's ridley sea turtle (Lepidochelys kempii) at the Gladys Porter Zoo.
  • Photo: A blue-breasted kingfisher (Halcyon malimbica) at the Houston Zoo.
  • Highfin catfish (Neoarius berneyi) at the Freshwater Ecology and Marine Biology Dept. at Templestowe College.
  • Photo: A female giant Pacific octopus (Enteroctopus dofleini) at the Alaska SeaLife Center in Seward, AK.
  • Photo: A lettuce bryozoan (Thalamoporella gothica floridana) at Gulf Specimen in Panacea, Florida.
  • Picture of a female swallow tanager (Tersina viridis) at the Houston Zoo.
  • Photo: Blue gourami (Trichopodus trichopterus) at the Dallas Children's Aquarium.
  • A zookeeper holds up a Speckled padloper (Homopus signatus) at the Omaha Zoo.
  • A common vampire bat (Desmodus rotundus) at the Buffalo Zoo, Buffalo, New York.
  • Picture of a four-banded sandgrouse (Pterocles quadricinctus) at the Tulsa Zoo.
  • Photo: An endangered Silverstone's poison frog (Ameerega silverstonei) at a private collection in Gainesville, Florida.
  • Photo: A West Indian Whistling-duck (Dendrocygna arborea) at the Miller Park Zoo. This species is listed at vulnerable on the IUCN Red List.
  • Photo: A western hooded pita (Pitta sordida sordida) on Semirara Island in the Philippines.
  • Photo: An endangered Vaillant's Mabuya, Chioninia vaillantii, at the Plzen Zoo.
  • Bryn, the federally endangered Columbia Basin pygmy rabbit (Brachylagus idahoensis), sat for this portrait in 2007 at the Oregon Zoo in Portland, Oregon. She was one of two female Columbia Basin pygmy rabbits left, the end of the line for this species of animals. Since there are no males left, this means only animals intercrossed with the Idaho race will survive. She died in 2008, marking the end of her genetic line. This subpopulation lost its sagebrush habitat as the land was developed for agriculture in the state of Washington.
  • A common ferret (Mustela putorius furo) at the Rolling Hills Wildlife Adventure.
  • Picture of a Hispaniolan common treefrog (Osteopilus dominicensis) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: An Eastern kingsnake (Lampropeltis getula getula) at the North Carolina Zoo in Asheboro, North Carolina.
  • A bagrid catfish (Mystus castaneus) at Zoo Negara.
  • Picture of a Burton's legless lizard (Lialis burtonis) at the Healesville Sanctuary.
  • A muscovy duck named Joelle (Cairina moschata moschata) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a lowland copperhead (Austrelaps superbus) at the Healesville Sanctuary.
  • Picture of a female Socorro dove (Zenaida graysoni) named 'Doc' at the Tracy Aviary.
  • Photo: An eastern painted turtle (Chrysemys picta picta) at the Tennessee Aquarium.
  • A slimy salamander (Plethodon glutinosus glutinosus) at the Toledo Zoo, Toledo, Ohio.
  • Photo: Mountain patch-nosed snake (Salvadora grahamiae grahamiae) at the Arizona-Sonora Desert Museum.
  • Photo: From the United Nations premier of Racing Extinction, featuring Photo Ark images.
  • Photo: A six-banded armadillo (Euphractus sexcinctus setosus) at BioParque do Rio.
  • Picture of a Nicaraguan slider (Trachemys grayi emolli) at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.
  • Malaysian horned leaf frog (Megophrys nasuta) from a private collection.
  • Photo: Five Greater Bermuda land snails (Poecilozonites bermudensis) at the Zoological Society of London.
  • A crested toad (Bufo typhonius) at the Houston Zoo.
  • Photo: Asian flower beetle (Agestrata orichalca) at the Insectarium in New Orleans.
  • Photo: A tawny owl (Strix aluco aluco) at Parque Biologico.
  • Studio portrait of a northern red-backed vole (Clethrionomys rutilus.)
  • A federally endangered Mexican gray wolf (Canis lupus baileyi) at the Wild Canid Survival and Research Center.
  • Photo: A pair of Fischer's lovebirds, Agapornis fischeri.
  • 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.
  • A harpy eagle (Harpia harpyja) at the Los Angeles Zoo.
  • Kihansi spray toad (Nectophrynoides asperginis), an amphibian from Tanzania, at the Toledo Zoo. (IUCN: Extinct in the wild) .
  • Picture of a titan triggerfish, Balistoides viridescens, at Shark Reef Aquarium.
  • Photo: A Malaysian gliding tree frog (Rhacophorus pardalis) from a private collection.
  • A coastal tailed frog (Ascaphus truei) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: Chevron patter color morph of the Limosa harlequin frog (Atelopus limosus) at the Panama Amphibian Rescue and Conservation Project.
  • Picture of a rosyside dace (Clinostomus funduloides) at the Virginia Aquarium.
  • Photo: A redeye bass (Micropterus coosae) photographed at the Alabama Aquatic Biodiversity Center in Marion, AL. This fish was collected Cheaha Creek, in Calhoun County, AL.
  • Giant Prickly Stick Insect (Extatosoma tiaratum) at the Omaha Henry Doorly Zoo.
  • A picture of a typical striped grass mouse (Lemniscomys striatus ardens) at the Plzen Zoo in the Czech Republic.
  • Picture of a fork-tailed kite (Milvus migrans affinis) at the Healesville Sanctuary.
  • Photo: Cooper creek turtle (Emydura macquarii emmotti) at Templestowe College
  • Photo: A white-bellied seedeater (Sporophila leucoptera cinereola) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • Photo: Starry flounder (Platichthys stellatus) at the Alaska SeaLife Center in Seward, AK.
  • An Amethystine scrub python (Morelia amethistina) sheds his skin at the Omaha Zoo.
  • Photo: A pregnant, female Australian velvet gecko (Oedura monilis) from a private collection.
  • Photo: A yellow-headed Amazon parrot (Amazona oratrix oratrix) at the Kansas City Zoo.
  • Photo: Pacific Rotten Wood Termite (Zootermopsis angusticollis) at the Cincinnati Zoo.
  • Photo: Giant crab spider (Olios fasciculatus) at the Arizona-Sonora Desert Museum.
  • A cricket (Gryllidae sp.).
  • Photo: Loggerhead sponge, Spheciospongia vesparia, at Gulf Specimen Marine Lab and Aquarium.
  • Photo: A Madagascar night snake (Madagascarophis colubrinus pastoriensis) at the Plzen Zoo in the Czech Republic.
  • Bryn, the federally endangered Columbia Basin pygmy rabbit (Brachylagus idahoensis), sat for this portrait in 2007 at the Oregon Zoo in Portland, Oregon. She was one of two female Columbia Basin pygmy rabbits left, the end of the line for this race of animals. Since there are no males left, this means only animals intercrossed with the Idaho race will survive. She died in 2008, marking the end of her genetic line. This subpopulation lost its sagebrush habitat as the land was developed for agriculture in the state of Washington.
  • Mountain madtoms (Noturus eleutherus) at Conservation Fisheries, a native stream fish breeding center in Knoxville. This fish is common and widespread in the southeastern U.S.
  • Photo: Longnose crayfish, Cambarus cf. longirostris, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from the Woluchaki River, TN.
  • Photo: Eurasian great grey owl (Strix nebulosa lapponica) from the Plzen Zoo in the Czech Republic.
  • Picture of critically endangered (IUCN), federally endangered fat threeridges (Amblema neislerii) collected from the Chipola River near Wewahitchka, Florida.
  • An eastern screech owl (Megascopes asio asio) at The Wildlife Center in Espanola, NM.
  • A picture of a groundhog (Marmota monax bunkeri).
  • Photo: A tomato frog (Dyscophus guinetti) at the Vancouver Aquarium.
  • A blue-spotted salamander (Ambystoma laterale) at the National Mississippi River Museum and Aquarium, Dubuque, Iowa.
  • Photo: A female Antilles gecko (Gonatodes antillensis) at Josh’s Frogs in Michigan.
  • Photo: Midget faded rattlesnake (Crotalus oreganus concolor) at the Arizona-Sonora Desert Museum.
  • Photo: A greater kestrel (Falco rupicoloides) named Chase at The International Centre for Birds of Prey in England.
  • A bat-eared fox (Otocyon megalotis megalotis) at the Omaha Zoo.
  • Picture of a blue-crowned motmot (Momotus momota) at Omaha's Henry Doorly Zoo and Aquarium.
  • Topeka shiners (Notropis topeka) at the University of Kansas Field Station. (US: Endangered)
  • Photo: A juvenile red-flanked duiker (Cephalophus rufilatus) at the LA Zoo.
  • Photo: A male Kashmir koklass pheasant (Pucrasia macrolopha biddulphi) from a private collection.
  • Photo: A common hill myna (Gracula religiosa) at the Assam State Zoo cum Botanical Garden.
  • Photo: Honduran ratsnake (Elaphe flavirufa pardalina) at the Oklahoma City Zoo.
  • Picture of a male Brazilian teal, Amazonetta brasiliensis, at Sylvan Heights Bird Park.
  • A golden taveta weaver (Ploceus castaneiceps) at the Cleveland Metroparks Zoo.
  • Picture of a diablito, also known as a little devil poison frog (Oophaga sylvatica) Rio Durango, Ecuador locality, from a private collection.
  • A picture of a striped skunk (Mephitis mephitis varians) at The Wildlife Center in New Mexico.
  • D.J. is an 11-month-old Sumatran orangutan (Pongo abelii) and Dirgahayu “Ayu” is an 11-month-old Bornean orangutan (Pongo pygmaeus). Unfortunately, both species are critically endangered, in large part due to the palm oil crisis. Both of these juvenile primates are cared for by the Taman Safari in Bogor, West Java, Indonesia.
  • A picture of a Sonoran coral snake (Micruroides euryxanthus euryxanthus) from a private collection.
  • A Fea’s chameleon (Chamaeleo feae) from Bioko Island, Equatorial Guinea.
  • Picture of an endangered (IUCN) and federally endangered horned guan (Oreophasis derbianus)
  • Photo: A red and white giant flying squirrel (Petaurista alborufus) at Night Safari, part of Wildlife Reserves Singapore.
  • Photo: A hermit crab (Coenobita brevimanus) at the Safari Land Pet Store.
  • Budgett's frog (Lepidobatrachus laevis) at the National Aquarium in Baltimore.
  • A shining flea beetle (Asphaera lustrans).
  • Picture of an American avocet (Recurvirostra americana) at Tracy Aviary.
  • Micronesian kingfishers (Todiramphus cinnamominus) at the Houston Zoo. This species is considered Extinct in the Wild by IUCN.
  • Photo: Chinese cave gecko (Goniurosaurus hainanensis) at Loro Parque.
  • Photo: An endangered white-naped mangabey (Cercocebus lunulatus) at the Rome Zoo.
  • A kori bustard (Ardeotis kori strthiunculus) named ‘Snake’ at Zoo Atlanta.
  • A hottentot teal (Anas hottentota) at the Kansas City Zoo.
  • Photo: A critically endangered Lake Oku clawed frog (Xenopus longipes) at the London Zoo.
  • Picture of a vulnerable Tucuman amazon (Amazona tucumana) at the Central Florida Zoo.
  • Photo: A marsh meadow grasshopper (Chorthippus curtipennis) at the Niwot Ridge Long Term Ecological Research site, near Nederland, CO. This research site is funded by the National Science Foundation.
  • A horned frog (Ceratophrys cornuta) at the Riverbanks Zoo.
  • 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.
  • Photo: Brazilian blue and red tarantula (Avicularia geroldi) at the Bugarium at the Albuquerque BioPark.
  • Photo: Bigclaw crayfish (Faxonius placidus) from the wild.
  • Photo: A corky sea finger (Briareum asbestinum) at the Indianapolis Zoo.
  • Photo: An unidentified grub species at Fauna Andina, a conservation center near south-central Chile.
  • Photo: Moluccan king parrot, Alisterus amboinensis dorsalis, at Loro Parque Fundacion.
  • Photo: Common stingray (Dasyatis pastinaca) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Photo: Blue winged parrotlet (Forpus xanthopterygius flavissimus) at Loro Parque Fundacion.
  • A Northern white-faced owl (Ptilopsis leucotis) at the Cincinnati Zoo.
  • A Texas recluse spider (Loxosceles devia) at the Gladys Porter Zoo in Brownsville, Texas.
  • Picture of a vulnerable (IUCN) and federally endangered, booming Attwater's Prairie Chicken (Tympanuchus cupido attwateri) at the Caldwell Zoo in Tyler, Texas.
  • A hippopotamus (Hippopotamus amphibius) at the San Antonio Zoo. (IUCN: Vulnerable)
  • A captive, five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea. (IUCN: Vulnerable)
  • Photo: A male cabot tragopan (Tragopan caboti) at Pheasant Heaven.
  • Photo: A Kirk’s dik-dik (Madoqua kirkii) at the Memphis Zoo.
  • Picture of a vulnerable (IUCN) and federally endangered St. Vincent parrot (Amazona guildingii) at the Houston Zoo.
  • Photo: A male harpy eagle (Harpia harpyja) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Dwarf American toad (Bufo americanus charlesmithi) from a private collection.
  • Photo: An Asian house shrew (Suncus murinus) at the Plzen Zoo.
  • A painted lady butterfly (Vanessa cardui) a native to Nebraska, at the Lincoln Children’s Zoo.
  • Photo: Pine marten (Martes martes) at the Moscow Zoo.
  • An endangered keeled box turtle (Cuora mouhotii) at the Tennessee Aquarium in Chattanooga.
  • A black-throated magpie-jay (Calocitta colliei) at the Houston Zoo.
  • Photo: A Cape genet (Genetta tigrina) at North Somerset Bird of Prey Centre in England.
  • Picture of Nabire, a Northern white rhinoceros (Ceratotherium simum cottoni)
  • Photo: An endangered chimpanzee named Jengo (Pan troglodytes) at the Singapore Zoo.
  • Photo: A green sunfish (Lepomis cyanellus) from a private collection in Knoxville, Tennessee.
  • Photo: An adult and two juvenile tapered pigtoe mussel (Fusconaia burkei) from the Choctawhatchee River drainage photographed with the USFWS. These animals were collected from Bruce Creek, Walton County, FL. Juveniles are smaller, and lighter in color.
  • Picture of a common Mexican tree frog (Smilisca baudinii) at the Santa Barbara Zoo.
  • Picture of a vulnerable Nubian ibex (Capra nubiana) at Singapore Zoo.
  • Photo: Philippine hawk-owl (Ninox philippensis philippensis) at Crocolandia in the Philippines.
  • The federally endangered Salt Creek tiger beetle, Cicindela nevadica lincolniana.
  • Picture of a zebra paper wasp (Polistes exclamans) at the Dallas Zoo.
  • Photo: An orange-legged leaf frog (Pithecopus hypochondrialis) at the San Diego Zoo.
  • A Houston toad (Anaxyrus houstonensis) at the San Antonio Zoo. (US: Endangered, IUCN: Endangered)
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • Raggiana Bird-of-paradise (Paradisaea raggiana augustaevictoriae) at the Cincinnati Zoo.
  • Photo: A Danaid eggfly (Hypolimnas misippus) at the Jumalon Butterfly Sanctuary on Cebu Island in the Philippines.
  • Green frog (Rana clamitans) at the Toledo Zoo.
  • A razorback sucker (Xyrauchen texanus), from the Colorado River System. (US: Endangered; IUCN: Critically endangered)
  • Photo: A Lower Keys marsh rabbit, Sylvilagus palustris hefneri, from the wild.
  • Photo: Crested francolin (Dendroperdix sephaena grantii) at Safari Park Dvur Kralove.
  • An ocelot (Leopardus pardalis) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: A sea spider (Maja brachydactyla) at the Littoral Station of Aguda, Portugal.
  • Picture of a brown-throated parakeet (Eupsittula pertinax) at Pet Paradise.
  • Photo: A mottled rock rattlesnake (Crotalus lepidus lepidus) at Reptile Gardens.
  • Photo: A northern pearl dace (Margariscus nachtriebi) at the Schramm Education Center near Gretna, NE.
  • Photo: A vulnerable, federally threatened male Steller's eider (Polysticta stelleri) at the Alaska SeaLife Center.
  • Photo: A brown necked parrot (Poicephalus fuscicollis) at the Jurong Bird Park.
  • Photo: Cruiser caterpillar (Vindula arsinoe) at Melbourne Zoo.
  • Photo: A Colorado foam-nest frog (Engystomops coloradorum) at Centro Jambatu in Quito, Ecuador.
  • Common logperch (Percina caprodes) at the Oklahoma City Zoo. This animal was collected in Barron Fork Creek in Cherokee County, Oklahoma.
  • A Houston toad (Anaxyrus houstonensis) at the San Antonio Zoo. (US: Endangered, IUCN: Endangered)
  • Photo: Long-eared jerboa (Euchoreutes naso) at the Moscow Zoo.
  • Photo: A rocky shoals spider lily (Hymenocallis coronaria) in Riverbanks Zoo in Columbia, SC.
  • Photo: Timor monitor (Varanus timorensis) at Wroclaw Zoo.
  • Photo: Squatter pigeon (Geophaps scripta) at Melbourne Zoo. This species is listed as vulnerable by IUCN.
  • A southern two-lined salamander (Eurycea cirrigera) at the Riverbanks Zoo, Columbia, South Carolina.
  • Picture of a Perdido Key beach mouse (Peromyscus polionotus trissyllepsis) a federally-endangered rodent, at the Univ. of South Carolina. This and several other beach mice subspecie
  • Photo: A Djampea reticulated python (Malayopython reticulatus jampeanus) at Taman Mini Indonesia Indah.
  • Photo: Amargosa speckled dace (Rhinichthys osculus nevadensis) collected on the Amargosa River in Tecopa, California.
  • Picture of a juvenile glaucous-winged gull/western gull hybrid (Larus glaucescens x Larus occidentalis) at the Santa Barbara Wildlife Care Network.
  • Photo: A red rock shrimp (Lysmata californica) at California Science Center in Los Angeles, California.
  • A critically endangered (IUCN) and federally endangered Anegada ground iguana (Cyclura pinguis) at the Houston Zoo.
  • Photo: An orchard oriole (Icterus spurius) in Hudson, Wisconsin.
  • Photo: Hazel dormouse (Muscardinus avellanarius) at the Plzen Zoo in the Czech Republic.
  • Picture of a basket star (Astrophyton muricatum) at Pure Aquariums from the Gulf Specimen Marine Lab.
  • South African crowned crane (Balearica regulorum regulorum) at Parc des Oiseaux in Villars Les Dombes, France.
  • Photo: Seven juvenile Virginia opossums (Didelphis virginiana virginiana) at the WildCare Foundation, a wildlife rehabber in Noble, Oklahoma.
  • A Cuban knight anole (Anolis equestris) at the Houston Zoo.
  • Photo: Crested sculpin (Blepsias bilobus) at the Alaska SeaLife Center.
  • Picture of a Common spiny-tailed iguana (Ctenosaura similis) at the Columbus Zoo.
  • Photo: Endangered Cope's arboreal alligator lizard (Abronia aurita) at Urban Ark Conservation.
  • Photo: A masked bobwhite quail (Colinus virginanus ridgwayi) at the Phoenix Zoo, Phoenix, Arizona.
  • Photo: Tuckasegee stream crayfish (Cambarus tuckasegee) from the wild.
  • Photo: White-eyed parakeet (Psittacara leucophthalmus leucophthalmus) from the town of Honnecourt Sur Escault, France.
  • Photo: Stick insect (Hermagoras cultratolobatus) at the Moscow Zoo.
  • Photo: An endangered, juvenile silvery gibbon (Hylobates moloch) at Bali Safari.
  • Photo: A margay (Leopardus wiedii pirrensis) named Diego, at Zoologico de Quito.
  • Photo: An unidentified lobophylia coral (Lobophylia sp.) at the Akron Zoo.
  • A Kuhl's flying gecko (Gekko kuhli) at Urban Ark Conservation
  • A female wrinkled hornbill (Rhabdotorrhinus corrugatus) at the Houston Zoo.
  • Photo: Purple honeycreeper (Cyanerpes caeruleus) and red-legged honeycreeper (Cyanerpes cyaneus) at the Dallas World Aquarium.
  • Fat tailed gerbil (Pachyuromys duprasi) at the Omaha Zoo.
  • Photo: A female termite hill gecko (Hemidactylus triedrus) at Josh’s Frogs in Michigan.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: Black cap jawfish (Opistognathus randalli) at Pure Aquariums.
  • Photo: A glass bloodfin tetra (Prionobama filigera) at the Singapore Zoo's River Safari area.
  • A male Cape shoveler (Spatula smithii) at Safari Park Dvur Kralove.
  • Picture of a Hosmer's spiny-tailed skink (Egernia hosmeri) from the Tulsa Zoo.
  • Photo: A Klappenbach's red-bellied frog (Melanophryniscus klappenbachi) at WWT Slimbridge in England.
  • A spotfin shiner (Cyprinella spiloptera).
  • Photo: A Sloan’s crayfish (Faxonius sloanii) collected from Tom’s Run, Ohio by the West Liberty University Crayfish Conservation Lab.
  • Picture of an undescribed harlequin frog (Atelopus species) from Suriname.
  • A picture of a redbreast tilapia (Coptodon rendelli) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: Chestnut naped imperial pigeon (Ducula aenea paulina) at the Exmoor Zoo.
  • A three-month-old baby chimpanzee (Pan troglodytes) named Ruben at Tampa's Lowry Park Zoo. Listed as endangered (IUCN) and federally endangered
  • Picture of a near threatened Bornean crested fireback pheasant (Lophura ignita ignita) at Pheasant Heaven, a private pheasant breeding facility near Clinton, NC.
  • Photo: A Pel’s fishing owl (Scotopelia peli) at the Monticello Center in Italy.
  • Photo: A tattered Helena morpho butterfly (Morpho helena marinate) in Gamboa, Panama.
  • A maize calligrapher hoverfly (Toxomerus politus) from near Adams, NE.
  • A picture of a larvae of an eastern dobsonfly (Corydalus cornutus) at Conservation Fisheries.
  • Photo: A golden orb weaver (Argiope amoena) at the University of the Philippines.
  • Photo: Mediterranean jelly or fried egg jellyfish (Cotylorhiza tuberculata) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Spring azure butterfly (Celastrina ladon) from Cross Lake, Minnesota.
  • Portrait of a white pelican (Pelecanus erythrorhynchos).
  • Picture of a male greater grison (Galictis vittata canaster) named Smith at the Summit Municipal Park in Gamboa, Panama.
  • Photo: A New Guinea bronzewing (Henicophaps albifrons) at Ragunan Zoo in Jakarta, Indonesia.
  • Picture of an orange-breasted waxbill (Amandava subflava) from a private collection.
  • Photo: Katydid (Mecopoda cambodia) at the Moscow Zoo.
  • Photo: A rainbow smelt (Osmerus mordax) at the Maine State Aquarium in West Boothbay, ME.
  • Grey-headed fish-eagle (Icthyophaga ichthyaetus) at ACCB in Siem Reap, Cambodia.
  • Photo: A giant fringe-limbed treefrog (Ecnomiohyla fimbrimembra) at Zoo Atlanta.
  • Photo: Longhorn beetle (Plinthocoelium sauveolens) at the Insectarium in New Orleans.
  • A California sea lion, Zalophus californianus.
  • Photo: Atlantic mudskipper (Periophthalmus barbarus) at Aquarium of the Pacific in Long Beach, CA.
  • An eastern American toad (Bufo americanus americanus) found in Watertown, NY.
  • Picture of a lesser short-nosed fruit bat (Cynopterus brachyotis) at the Lubee Bat Conservancy in Gainesville, Florida.
  • Photo: A duskystripe shiner (Luxilus pilsbryi) at the Missouri State University Mussel Lab.
  • Photo: Eurasian grey crane (Grus grus) at Parc des Oiseaux in Villars Les Dombes, France.
  • A Kootenai River white sturgeon (Acipenser transmontanus) at the Kootenai Tribal Hatchery. (US: Endangered)
  • Photo: Florida woods cockroach (Eurycotis floridana) at the Budapest Zoo.
  • Picture of a San Diego gopher snake (Pituophis catenifer annectens) at the LA Zoo.
  • White sucker (Catostomus commersonii) collected from the Rio Grande River near Albuquerque, New Mexico.
  • A picture of a critically endangered Chinese three-striped box turtle (Cuora trifasciata trifasciata) from the Turtle Survival Center.
  • Photo: A tadpole physa (Physa gyrina) at Cedar Point Biological Station.
  • Picture of a vulnerable Owston's palm civet (Chrotogale owstoni) at the Carnivore and Pangolin Conservation Center in Cuc Phuong National Park, Vietnam.
  • Picture of a San Clemente Island fox (Urocyon littoralis clementae) at the Santa Barbara Zoo.
  • Photo: Two brittle stars (Ophiothrix sp.) at Aquarium Berlin.
  • Photo: A male Faeroe Island eider (Somateria mollissima faeroeensis) at Lundi Farm in Verl, Germany.
  • A Columbia spotted frog (Rana luteiventris) from the Toiyabe subpopulation near Austin, Nevada.
  • A white peacock butterfly (Anartia jatrophae) at the Gladys Porter Zoo in Brownsville, Texas.
  • Photo: A female spot breasted woodpecker (Colaptes punctigula) at the National Aviary of Colombia.
  • Photo: A juvenile red-footed booby (Sula sula) at Houston SPCA’s Wildlife Center of Texas.
  • Photo: Romeo, a ten-year-old Sehuencas water frog (Telmatobius yuracare) at Museo d'Orbigny, a natural history museum and rare amphibian breeding center in Chocabamba Bolivia.
  • A Gulf marsh snake (Nerodia fasciata clarki) at the Estuarium in Dauphin Island, AL.
  • An endangered spotted reed frog (Hyperolius puncticulatus) at the Vancouver Aquarium.
  • A Curaçaoan long-nosed bat or southern long-nosed bat (Leptonycteris curasoae) at the Plzen Zoo in the Czech Republic. This species is listed as vulnerable.
  • Photo: Green-bordered ground beetle (Pasimachus viridans) at the Bugarium at the Albuquerque BioPark.
  • Photo: Endangered Cope's arboreal alligator lizard (Abronia aurita) at Urban Ark Conservation.
  • A chocolate chip sea star (Protoreaster nodosus) at the Indianapolis Zoo.
  • A St. Andrew beach mouse (Peromyscus polionotus peninsularis) a federally endangered rodent, at the USFWS office in Panama City, FL. This and several other beach mice subspecies are imperiled due to beach development.
  • Picture of a Bermuda diamondback terrapin (Malaclemys terrapin). This may soon be designated as a separate subspecies or even a full species, and was photographed at the Bermuda Aquarium, Museum and Zoo.
  • Picture of a blotched foxface (Siganus unimaculatus) at Nebraska Aquatic Supply.
  • Picture of a blue wood shrimp (Atya gabonensis) at Pure Aquariums.
  • A smooth softshell turtle (Apalone mutica) at Millard's Turtle Farm.
  • A blue-tongued skink (Tiliqua scincoides intermedia) at the Sunset Zoo.
  • Picture of a red phalarope (Phalaropus fulicarius) at the Monterey Bay Aquarium.
  • A chocolate chip sea star, Protoreaster nodosus.
  • Photo: Kira, a 12 year old short-eared dog (Atelocynus microtis) at the Taricaya Eco Reserve in Puerto Maldonado.
  • Photo: A central Bornean orangutan (Pongo pygmaeus wurmbii) at the Avilon Wildlife Conservation Foundation.
  • A venomous Jameson’s mamba (Dendroaspis jamesoni kaimosae) at Reptile Gardens.
  • A common kingsnake or albino eastern kingsnake (Lampropeltis getula getula) at the Tennessee Aquarium.
  • Photo: A Cumberland mocassinshell (Medionidus conradicus) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • Photo: A green velvet finger sponge (Terpios zeteki) photographed at Gulf Specimen Marine Lab and Aquarium.
  • Scarlet macaws (Ara macao) at the Henry Doorly Zoo in Omaha, Nebraska.
  • A picture of a bilby (Macrotis lagotis lagotis), a vulnerable Australian mammal.
  • Photo: A Madagascar tree boa (Sanzinia volontany) at the Plzen Zoo in the Czech Republic.
  • Photo: A striped field mouse (Apodemus agrarius) at the Plzen Zoo.
  • Imported red fire ants (Solenopsis invicta) feed on a drop of honey at the Dallas Zoo.
  • Photo: A shingle-back skink (Trachydosaurus rugosus) at Reptile Gardens.
  • Photo: An Asian common toad (Duttaphrynus melanostictus) at the Miller Park Zoo in Bloomington, Illinois.
  • Photo: A pallid swift (Apus pallidus) at the Wildlife Rescue Center (LIPU) of Rome.
  • Photo: A purple swamphen (Porphyrio porphyrio viridis) at Phnom Tamao Wildlife Rescue Center - Wildlife Alliance.
  • An Engystomops randi, no English names noted.
  • Photo: A female lineated pheasant (Lophura leucomelanos lineata) at a private collection.
  • A vulnerable ornate monitor (Varanus ornatus) at the Cincinnati Zoo.
  • A picture of a common raccoon (Procyon lotor hirtus) in Dunbar, Nebraska.
  • A leafcutter bee (Megachile parallela) photographed at a studio in Lincoln, NE.
  • Photo: A timber rattlesnake (Crotalus horridus horridus) at Reptile Gardens.
  • Photo: A Guam rail (Hypotaenidi owstoni) at the Sedgwick County Zoo, Wichita, Kansas.
  • A picture of two splendid killifish (Aphanius splendens) at the Zoological Society of London.
  • Photo: Aymara parakeet (Psilopsiagon aymara) at Loro Parque Fundacion.
  • Photo: Black catfish (Neosilurus ater) at the Freshwater Ecology and Marine Biology Dept. at Templestowe College.
  • A Tiger longwing butterfly (Heliconius hecale) at the Audubon Insectarium in New Orleans.
  • Picture of endangered Banggai cardinalfish (Pterapogon kauderni) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A female Southern oncilla or tiger cat (Leopardus guttulus) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: A cape giraffe (Giraffa giraffa giraffa) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: A tarantula (Grammostola anthracina) from a private collection.
  • A Eastern rat snake (Pantherophis alleghaniensis) at the Buttonwood Park Zoo in New Bedford, Massachusetts.
  • Photo: A speckled rattlesnake (Crotalus mitchelli pyhrrus) at Reptile Gardens.
  • A fan foot gecko (Ptyodactylus hasselquisti) at Scaly Dave's Herp Shack.
  • Photo: A Lake Junin giant frog (Telmatobius macrostomus) at Parque Zoológico Huachipa in Lima, Peru.
  • Photo: Polleni cichlid or black diamond cichlid (Paratilapia polleni) at L'aquarium tropical du palais de la Porte DorŽe. This species is listed as vulnerable by IUCN.
  • A Gulf marsh snake (Nerodia fasciata clarki) at the Estuarium in Dauphin Island, AL.
  • Picture of a vulnerable Southern ground hornbill (Bucorvus leadbeateri) from Parc des Oiseaux.
  • Picture of a male sea goldie (Pseudanthias squamipinnis) at Pure Aquariums.
  • Picture of an endangered (IUCN) and federally endangered, Grand Cayman blue iguana (Cyclura lewisi) at the Sedgwick County Zoo in Wichita, Kansas.
  • Picture of a Santa Cruz gopher snake (Pituophis catenifer pumilus) at the Santa Barbara Zoo.
  • Photo: A female African hawk-eagle (Aquila spilogaster) at Zoopark Zajezd.
  • Photo: Siamese crocodile (Crocodylus siamensis) at the St. Augustine Alligator Farm Zoological Park in St. Augustine, Florida.
  • Picture of a North American ruddy duck (Oxyura jamaicensis) at Sylvan Heights Bird Park.
  • A gargoyle gecko (Rhacodactylus auriculatus) at the Omaha Zoo.
  • Photo: Virginia metallic tiger beetle (Tetracha virginica) caught in the Tide Swamp Unit of Big Bend Wildlife Management Area.
  • Photo: A juvenile great blue heron (Ardea herodias wardi) at the Chintimini Wildlife Center in Corvallis, Oregon.
  • A picture of a baby striped skunk (Mephitis mephitis varians) from Dunbar, Nebraska.
  • Photo: A ribbon leech (Nephelopsis obscura) at Leech Lake, Minnesota.
  • A wolf spider (Hogna osceola) at the Archbold Biological Station.
  • A bald eagle (Haliaeetus leucocephalus) at Raptor Recovery Nebraska.
  • Picture of a western cattle egret (Bubulcus ibis ibis) at Omaha's Henry Doorly Zoo and Aquarium, Omaha, Nebraska.
  • A Cuban knight anole (Anolis equestris) at the Houston Zoo.
  • Photo: Wrinkled grasshopper (Hippiscus ocelote) at Cedar Point Biological Station.
  • A Barbary falcon (Falco pelegrinoides).
  • Photo: A violet necked lory (Eos squamata riciniata) at Loro Parque Fundacion.
  • A picture of a night snake (Hypsiglena ochrorhyncha klauberi) at the Arizona-Sonora Desert Museum.
  • Picture of a harlequin poison frog (Oophaga histrionica) Anchicaya River, Colombia locality, from a private collection.
  • Photo: Spotted bass (Micropterus punctulatus) at East Bay Regional Park District.
  • Photo: Long-snouted pipefish (Doryichthys boaja) at Faunia in Madrid, Spain.
  • Photo: A dyeing poison dart frog (Dendrobates tinctorius) at Josh’s Frogs in Owosso, Michigan.
  • A New Guinea singing dog (Canis lupus hallstromi) Miller Park Zoo.
  • Photo: Sonora sucker (Catostomus insignis) at Mora National Fish Hatchery.
  • Photo: A white heelsplitter (Lasmigona complanata) photographed at the North Platte Fish Hatchery, owned/operated by Nebraska Game and Parks.
  • Photo: A female (colorful) and male (brown) carpet chameleon (Furcifer lateralis) illustrate sexual dimorphism; differences in appearance between male and female of the same species.
  • A desert kangaroo rat (Dipodomys deserti) at Omaha's Henry Doorly Zoo and Aquarium.
  • Photo: A longnose harlequin frog (Atelopus longirostris) at Centro Jambatu in Quito, Ecuador.
  • Photo: California floater (Anodonta californiensis) at the Conservation Dept. of the Phoenix Zoo.
  • An endangered Malayan tiger (Panthera tigris jacksoni) at the Omaha Zoo.
  • Sonoran green toad (Anaxyrus retiformis) at the Arizona-Sonora Desert Museum.
  • Photo: A blackbelly triggerfish (Rhinecanthus verrucosus) at Semirara Marine Hatchery Laboratory in the Philippines.
  • A Manaus slender-legged treefrog (Osteocephalus taurinus) at Pontificia Universidad Católica del Ecuador.
  • A picture of a Pyrenean desman (Galemys pyrenaicus) photographed on the grounds of the Symington Estates in Portugal.
  • Photo: A Pakistan saw scale viper (Echis carinatus carinatus) at Reptile Gardens.
  • A bush thick-knee (Burhinus grallarius) at the Sedgwick County Zoo in Wichita.
  • Photo: An upland burrowing crayfish (Cambarus dubius) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Photo: Red-billed parrot (Pionus sordidus) at Piscilago Zoo in Bogota, Colombia.
  • A largescale stoneroller (Campostoma oligolepis).
  • Picture of a near-threatened Mindanao lorikeet (Trichoglossus johnstoniae) at the Tulsa Zoo.
  • Photo: Tundra great horned owl (Bubo virginianus subarticus) at Monticello Center in Italy.
  • A picture of a vulturine guineafowl, Acryllium vulturinum at the Lincoln Children's Zoo.
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • Photo: A Northern pine siskin (Spinus pinus pinus) at Greenwood Wildlife Rehabilitation Center in Longmont, Colorado.
  • Photo: An endangered Higgins eye pearly mussel (Lampsilis higginsii) at the Genoa National Fish Hatchery, Genoa, Wisconsin.
  • Photo: Pallas's squirrel (Callosciurus erythraeus) at the Plzen Zoo in the Czech Republic.
  • Photo: An Andean saddle-back tamarin (Leontocebus leucogenys) at Parque Zoológico Huachipa in Lima, Peru.
  • Picture of a female white-faced ibis (Plegadis chihi) at Tracy Aviary.
  • Pickerel frog (Lithobates palustris) at the National Aquarium in Baltimore.
  • Photo: Red winged parrot (Aprosmictus erythropterus coccineopterus) at Logo Parque Fundacion.
  • Photo: A cricket at the Sunset Zoo in Manhattan, Kansas.
  • Photo: A Chesapeake logperch (Percina bimaculata) photographed at Conservation Fisheries.
  • Photo: A Sechuran fox (Pseudalopex sechurae) at Parque Zoológico Huachipa in Lima, Peru.
  • Picture of an Ohio pigtoe mussel (Pleurobema cordatum) at the Columbus Zoo.
  • An endangered golden parakeet (Guaruba guarouba) at the Houston Zoo.
  • Photo: A pair of Chilean lapwings (Vanellus chilensis chilensis) at Lundi Farm in Verl, Germany.
  • Photo: Cudweed grasshopper or mugwort grasshopper (Hypochlora alba) at Cedar Point Biological Station.
  • Photo: A male Idaho ruffed grouse (Bonasa umbellus phaia) named Robbie at Grouse Park Waterfowl near Cascade, Idaho.
  • Photo: Warmouth ( Lepomis gulosus) at the Fish Conservation and Culture Lab in Byron, CA at UC Davis.
  • Photo: Sanibel Island marsh rabbit (Sylvilagus palustris paludicola) from Sanibel Island.
  • Photo: A lined day gecko, Phelsuma lineatus, at Tsimbazaza Zoo.
  • Picture of a swamp sparrow (Melospiza georgiana) at Tall Timbers Research Station and Land Conservancy.
  • Photo: A yellowfin sole (Limanda aspera) at the Alaska SeaLife Center.
  • Picture of a lanner falcon (Falco biarmicus) at Reptile Gardens.
  • Blanding's turtle (Emydoidea blandingii) at the Toledo Zoo.
  • Photo: Pulsing pom pom xenia (Cespitularia sp.) at Butterfly Pavilion.
  • Picture of a federally endangered, American alligator (Alligator mississippiensis) at the Kansas City Zoo.
  • Photo: Planck, a European eagle owl (Bubo bubo bubo) photographed at Rodbaston Animal Zone in Penkridge, England.
  • Photo: European greenfinch (Chloris chloris) from the Budapest Zoo.
  • Picture of a caterpillar of a fall webworm moth (Hyphantria cunea) found in the Big Bend Wildlife Management Area near Perry, Florida.
  • Photo: A Yellow-breasted fruit dove (Ramphiculus occipitalis) at the Avilon Zoo.
  • Photo: Cudweed grasshopper or mugwort grasshopper (Hypochlora alba) at Cedar Point Biological Station.
  • A giant water beetle (Belostomatidae sp.)
  • Picture of Katrina, a federally endangered, black phased African leopard (Panthera pardus pardus), at the Alabama Gulf Coast Zoo.
  • Photo: The blue glassy tiger (Ideopsis vulgaris contigua) at ACCB in Siem Reap, Cambodia.
  • Photo: A chestnut-bellied guan (Penelope ochrogaster) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: A greenfin shiner (Cyprinella chloristia) at the North Carolina Zoo in Asheboro, North Carolina.
  • Photo: An amber baboon tarantula (Harpactira cafreriana) from a private collection.
  • Photo: A grayish baywing (Agelaioides badius badius) at Fundacao Jardim Zoologico de Brasilia.
  • Photo: Brook silversides (Labidesthes sicculus) at Schramm Education Center near Gretna, NE.
  • Photo: A striped newt (Notophthalmus perstriatus) at the Sedgwick County Zoo.
  • Photo: Pearl-spotted owlet (Glaucidium perlatum) at Monticello Center in Italy.
  • A Russian dwarf hamster (Phodopus sungorus) from the Gladys Porter Zoo in Brownsville, Texas.
  • Nene geese (Branta sandvicensis) at the Great Plains Zoo, Sioux Falls, South Dakota. (IUCN: Vulnerable; US: Endangered)
  • Photo: Crossbill (Loxia curvirostra curvirostra) at Alpenzoo in Innsbruck, Austria.
  • A picture of a West African gaboon viper (Bitis rhinoceros) at Zoo Atlanta.
  • Photo: A Java yellow kneed tarantula (Selenocosmia javanensis) from a private collection.
  • Photo: A nutria (Myocastor coypus) at the Henry Doorly Zoo and Aquarium.
  • Photo: A ornate chorus frog (Pseudacris ornata) at the Auburn University Natural History Museum.
  • Picture of an ivory-billed aracari (Pteroglossus azara flavirostris) at the Dallas World Aquarium.
  • Photo: Cuban crested toad (Peltophryne peltocephala) at the Moscow Zoo.
  • A critically endangered Florida bonneted bat (Eumops floridanus).
  • An orchard bee (Lasioglossum sp.) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Picture of a Gulf Coast water dog (Necturus beyeri) at the Cincinnati Zoo.
  • Picture of a potto (Perodicticus potto) at the Cleveland Metroparks Zoo.
  • Photo: A female Chihuahua fairy shrimp (Streptocephalus mackini) at Cedar Point Biological Station.
  • A black-faced ibis (Theristicus melanopis) at the Cincinnati Zoo.
  • Picture of a twospot turkeyfish (Dendrochirus biocellatus) at Omaha's Henry Doorly Zoo and Aquarium.
  • Canebrake rattlesnake (Crotalus horridus atricaudatus) at the Riverbanks Zoo.
  • Picture of a federally endangered Andean condor (Vultur gryphus) at the Lowry Park Zoo.
  • Photo: An Island day gecko (Phelsuma nigristriata) at the Plzen Zoo.
  • A picture of a red pearlscale, Carassius auratus auratus, at Ocean Park in Hong Kong.
  • Photo: Rainbow shark (Labeo frenatus) at the Moscow Zoo.
  • Picture of an Abaco Island boa (Chilabothrus exsul) at the Oklahoma City Zoo.
  • A Miami blue butterfly (Cyclargus thomasi bethunebakeri) in larva form. 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.
  • A federally endangered Cape Sable seaside sparrow (Ammodramus maritimus mirabilis). This bird is down to about 2,000 individuals and declining. Nearly all of these birds are found within the Everglades National Park in southern Florida.
  • Photo: Three female leopard geckos (Eublepharis macularius) at the Sunset Zoo in Manhattan, Kansas.
  • A captive English/house sparrow (Passer domesticus) photographed at a studio in Lincoln, NE.
  • Photo: A female giant Pacific octopus (Enteroctopus dofleini) at the Alaska SeaLife Center.
  • A vulnerable ornate monitor (Varanus ornatus) at the Cincinnati Zoo.
  • An endangered Ruppell's griffon vulture (Gyps rueppellii rueppelli) at the Fort Wayne Zoo.
  • Photo: A question mark butterfly (Polygonia interrogationis) at the Minnesota Zoo.
  • Photo: A common nightingale (Luscinia megarhynchos) at Pinola Conservancy.
  • Picture of a spider tortoise (Pyxis arachnoides brygooi) at the St. Louis Zoo.
  • Picture of a vulnerable Fly River turtle (Carettochelys insculpta) at Reptile Gardens.
  • Photo: An unidentified turban snail (Turbo sp.) at the Akron Zoo.
  • Photo: Northern Plains ratsnake (Pantherophis emoryi) collected in Thayer County, Nebraska.
  • Photo: A white-throated kingfisher (Halcyon smyrnensis perpulchra) at Taman Mini Indonesia Indah.
  • An Espada's marsupial frog (Gastrotheca testudinea) at Pontificia Universidad Católica del Ecuador.
  • Picture of a federally endangered black caiman (Melanosuchus niger) at the St. Augustine Alligator Farm.
  • A coyote (Canis latrans) at the Great Plains 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: 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.
  • Peru marsupial frog (Gastrotheca peruana) at the National Aquarium in Baltimore.
  • A banded cat-eyed snake (Leptodeira annulata) at the Cincinnati Zoo.
  • Photo: Half-black angelfish (Centropyge vroliki) from Gulf Specimen Marine Laboratories.
  • Splendid mantella (Mantella pulchra) at the Detroit Zoo. (IUCN: Vulnerable)
  • A picture of an Ivory Coast mud turtle (Pelusios capulatta) from the Turtle Survival Center.
  • Photo: A great spotted woodpecker (Dendrocopos major pinetorum) at the Plzen Zoo.
  • Photo: A female western tanager (Piranga ludoviciana) at the Wildlife Center of New Mexico.
  • Picture of a pygmy or anthill python (Antaresia perthensis) at the St. Augustine Alligator Farm.
  • Photo: A spotted imperial pigeon (Ducula carola) at the Plzen Zoo in the Czech Republic.
  • Photo: A condor dart poison frog (Dendrobates condor) at Centro Jambatu in Quito, Ecuador.
  • A boat-tailed grackle (Quiscalus major) egg from a collection at the University of Nebraska State Museum.
  • A Eurasian black vulture (Aegypius monachus) at The Living Desert in Palm Desert, California.
  • Photo: Black kite (Milvus migrans migrans) at Lisbon Zoo.
  • Photo: Common two-banded seabream, Diplodus vulgaris, saltwater fish at the Vasco da Gama Aquarium.
  • Blanding's turtle (Emydoidea blandingii) at the Toledo Zoo.
  • A picture of a black-capped parakeet (Pyrrhura rupicola sandiae) at Loro Parque Fundacion.
  • A picture of a pile surfperch (Phanerodo vacca) at East Bay Regional Park District.
  • Photo: A Southern band-tailed pigeon (Patagioenas (fasciata) albilinea) at the Nashville Zoo in Nashville, Tennessee.
  • Photo: A male lined seedeater (Sporophila lineola) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: A spot-bellied eagle owl (Bubo nipalensis blighi) at Tierpark Berlin.
  • Photo: A male red jungle fowl (Gallus gallus) at the Assam State Zoo cum Botanical Garden.
  • Photo: A ringed crayfish (Faxonius neglectus) at the Pontotoc Ridge Preserve near Connerville, OK.
  • Photo: A European siskin (Spinus spinus) at Parque Biologico.
  • Photo: Siberian chipmunk (Tamias sibiricus) at the Moscow Zoo.
  • A vulnerable (IUCN) blotchside logperch (Percina burtoni) a very rare fish species at Conservation Fisheries, a native stream fish breeding center.
  • Plains leopard frog (Lithobates blairi) at Fenton Farm.
  • Picture of an endangered white-fronted quail-dove (Geotrygon leucometopia) from a private collection in the Dominican Republic.
  • A picture of a spotted seal (Phoca largha) at the Alaska SeaLife Center in Seward, AK.
  • Photo: An electric catfish (Malapterurus electricus) at the Singapore Zoo.
  • Photo: A small-scaled burrowing asp (Atractaspis microlepidota) at the Kentucky Reptile Zoo in Slade, Kentucky.
  • A banded leaf-toed gecko (Hemidactylus maculatus) from a private collection.
  • Mama, a lesser white-nosed monkey (Cercopithecus petaurista petaurista) at the Central Florida Zoo. She was born Aug. 15, 1999. She likes to stuff grapes into her cheek pouches so that her mate can’t get them.
  • A pineapple color variant of the green-cheeked conure (Pyrrhura molinae). This bird is a male named Squirt.
  • Picture of a spotted whistling duck (Dendrocygna guttata) at the Sylvan Heights Bird Park.
  • Photo: An endangered crested capuchin (Sapajus robustus) at the Los Angeles Zoo.
  • Photo: Green cheek anthias (Pseudanthias hutchi) at the Omaha Zoo.
  • Picture of common goldeneye ducks (Bucephala clangula) at Sylvan Heights Bird Park.
  • Photo: A male Lewis silver pheasant (Lophura nycthemera lewisi) at Penang Bird Park.
  • Picture of a Black-headed Parrot (Pionites melanocephalus) at the Sedgwick County Zoo in Wichita.
  • A cross-banded mountain rattlesnake (Crotalus transversus) at the San Antonio Zoo, San Antonio, Texas.
  • A marbled newt (Triturus marmoratus) at the Houston Zoo.
  • Picture of a vulnerable hispaniolan amazon or parrot (Amazona ventralis) at the Knoxville Zoo in Knoxville, Tennessee.
  • Picture of an Andean cock-of-the-rock (Rupicola peruvianus aequatorialis) at the National Aviary breeding center in Palmar, Colombia.
  • Photo: A juvenile male shock-headed capuchin (Cebus cuscinus) named Leandro photographed at Amazon Shelter, a wildlife rescue, rehabilitation and release center in Tambopata, Peru.
  • A critically endangered (IUCN) and federally endangered Philippine crocodile (Crocodylus mindorensis) at the Gladys Porter Zoo.
  • Picture of the feet of an endangered (IUCN) and federally endangered Malayan tapir (Tapirus indicus).
  • A cyprinid fish (Mystacoleucus marginatus) at Zoo Negara.
  • A Bornean blood python (Python brongersmai) at Zoo Atlanta.
  • Photo: Two hooked mussels (Ischadium recurvum) at Gulf Specimen Marine Lab and Aquarium.
  • A scissor grinder cicada (Neotibicen pruinosus) in Lincoln, NE.
  • A striped robber frog (Pristimantis unistrigatus) near Limon, Ecuador.
  • Photo: A green winged trumpeter (Psophia viridis) at Mantenedor da Fauna Silvestre Cariuá.
  • Photo: A superb fruit dove (Ptilinopus superbus superbus) at the Plzen Zoo.
  • Photo: An endangered gray woolly monkey (Lagothrix cana) at Mantenedor da Fauna Silvestre Cariuá.
  • Photo: A standing day gecko (Phelsuma standingi) at Reptile Gardens.
  • A big brown bat (Eptesicus fuscus fuscus) at Nebraska Wildlife Rehab.
  • Photo: A male Tule elk (Cervus canadensis nannodes) at Plzen Zoo in the Czech Republic.
  • Green frog (Rana clamitans) at the Toledo Zoo.
  • Photo: An Amazon tree boa (Corallus hortulanus hortulanus) at the Jacksonville Zoo and Gardens, Jacksonville, Florida.
  • Photo: Desert hooknose snake (Gyalopion quadrangulare) at the Phoenix Zoo.
  • A Eurasian eagle owl (Bubo bubo) at Zoo Atlanta.
  • Picture of a vulnerable (IUCN) and federally endangered Southern Africa King cheetah (Acinonyx jubatus jubatus) named George at Zoo Miami.
  • A Blue Ridge spring salamander (Gyrinophilus porphyriticus danielsi) at the Tennessee Aquarium, Tennesssee.
  • Photo: Critically endangered staghorn coral (Acropora cervicornis) at Butterfly Pavilion in Westminster, Colorado.
  • Picture of an Arctic fox (Vulpes lagopus) named Todd, at the Great Bend Brit Spaugh Zoo in Great Bend, Kansas.
  • Photo: White-bellied snapping turtle (Elseya branderhorstii) at the Singapore Zoo. This species is listed as Vulnerable on IUCN.
  • Photo: A female variable sunbird (Cinnyris venustus falkensteini) from Mt. Gorongosa in Gorongosa National Park.
  • Photo: Columbian wood turtle (Rhinoclemmys melanosterna) at the Cali Zoo.
  • Picture of a male summer tanager (Piranga rubra) at the Tulsa Zoo.
  • Picture of a brown spotted pit viper (Protobothrops mucrosquamatus) at the Dallas Zoo.
  • Photo: Walking stick (Acanthomenexenus polyacanthus) at the Budapest Zoo.
  • Photo: A greater black-backed gull (Larus marinus) at the Toledo Zoo.
  • A Florida cooter (Pseudemys floridana) at the Chapultepec Zoo in Mexico City.
  • A Texas tortoise (Gopherus berlandieri) at the Houston Zoo.
  • Photo: Tanzanian pink legged millipede (Dendrostreptus macracanthus) at the Budapest Zoo.
  • Photo: A golden redhorse (Moxostoma erythrurum) collected on the Little River near Maryville Tennessee.
  • Photo: A female Cuban kestrel (Falco sparverius sparveroides) named Sweetie at the Marathon Wild Bird Center in Marathon, Florida.
  • Photo: A curl-crested jay (Cyanocorax cristatellus) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • A blue-tongued skink (Tiliqua scincoides intermedia) at the Sunset Zoo.
  • Photo: A salmon-crested cockatoo at the Sedgwick County Zoo.
  • Photo: A Pueblan milk snake (Lampropeltis triangulum campbelli) at the Institute of Marine Mammal Studies (IMMS) at Gulfport, MS. This animal is part of their public education area.
  • 160215_Tristam's_Wildcat_70361
  • Photo: A Texas indigo snake (Drymarchon melanurus erebennus) at Reptile Lagoon in Hamer, South Carolina.
  • Photo: Devil's coach horse beetle (Ocypus olens) at Graham's Quinta dos Malvedos Vineyard.
  • Photo: A killer whale (Orcinus orca) named Kalia at SeaWorld in San Diego.
  • A volcano rabbit (Romerolagus diazi) at Chapultepec Zoo in Mexico City. (IUCN: Endangered)
  • Photo: Slate pencil urchin (Eucidaris thouarsii) at Aquarium of the Pacific in Long Beach, CA.
  • Photo: Two spotted skiffia (Skiffia multipunctata) at the Vasco da Gama Aquarium in Lisbon, Portugal.
  • Photo: Oncilla (Leopardus tigrinus pardinoides) at Parque Jaime Duque near Bogota, Colombia.
  • Photo: A Poeppig's woolly monkey (Lagothrix poeppigii) photographed at Amazon Shelter, a wildlife rescue, rehabilitation and release center in Tambopata, Peru.
  • Larval central newts (Notophthalmus viridescens) from Missouri State University.
  • An endangered Imperial parrot (Amazona imperialis) at the Rare Species Conservatory Foundation. This is one of just two imperial parrots in captivity, and the only one captive in the U.S. This bird is endangered, with just 350-450 birds in the wild on the island of Dominica in the eastern Caribbean. This bird was hand raised.
  • Picture of a banded huntsman spider (Holconia immanis) at the Taronga Zoo.
  • Photo: A black mamba (Dendroaspis polylepis) at Reptile Gardens.
  • An American crow (Corvus brachyrhynchos) at the Sutton Avian Research Center, Bartlesville, Oklahoma.
  • Ecuadorian pink tarantula (Pamphobeteus platyomma) at the Cleveland Metroparks Zoo.
  • Studio portrait of a northern red-backed vole (Clethrionomys rutilus.)
  • Photo: A bigtooth or Henlei freshwater stingray, Potamotrygon henlei, at Shark Reef Aquarium.
  • Photo: A one-month-old Greater Swiss mountain dog puppy in Choussy, France.
  • Photo: A flame box crab (Calappa flammea) at Gulf Specimen Marine Lab and Aquarium.
  • A Congo dwarf clawed frog (Hymenochirus boettgeri) at the Vancouver Aquarium.
  • Photo: A cherry darter (Etheostoma etnieri) at Conservation Fisheries in Knoxville, Tennessee.
  • 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.
  • Plains leopard frog (Lithobates blairi) at Fenton Farm.
  • Photo: A common palm civet (Paradoxurus hermaphroditus) at the Assam State Zoo in Guwahati, Assam, India.
  • Photo: Black-necked grebe (Podiceps nigricollis) at Monticello Center in Italy.
  • Photo: Northern red-backed vole (Clethrionomys rutilus) at the A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Science.
  • Photo: A strawberry poison frog (Oophaga pumilio) at Josh’s Frogs in Owosso, Michigan.
  • Photo: Huarani Otocinclus catfish (Otocinclus huaorani) at a private collection in Gainesville, Florida.
  • Picture of a chestnut teal (Anas castanea) at the Sylvan Heights Bird Park.
  • Photo: A female Venezuelan red howler monkey (Alouatta seniculus juara) at Mantenedor da Fauna Silvestre Cariuá.
  • Photo: Long nosed kusimanse (Crossarchus obscurus) at the Plzen Zoo in the Czech Republic.
  • A Dekay's brownsnake (Storeria dekayi texana) collected from Nebraska.
  • Photo: A male Koklass pheasant (Pucrasia macrolopha) at Lundi Farm in Verl, Germany.
  • An endangered Mariana fruit dove (Ptilinopus roseicapilla) at the Houston Zoo.
  • A robber frog (Eleutherodactylus sp.) near Mindo, Ecuador.
  • Spiny turtle (Heosemys spinosa), at Zoo Atlanta.
  • Photo: An Asian clam (Corbicula fluminea) at the West Liberty University Crayfish Conservation Lab in West Liberty, West Virginia.
  • Picture of an endangered white fronted capuchin (Cebus versicolor) at the Summit Municipal Park in Gamboa, Panama.
  • Picture of a female striped cowfish (Aracana aurita) at Omaha's Henry Doorly Zoo and Aquarium.
  • Picture of a Delacour's crested fireback pheasant (Lophura ignita macartneyi) at Pheasant Heaven, a private pheasant breeding center near Clinton, NC.
  • Photo: Frilled lizard (Chlamydisaurus kingii) at the St. Louis Zoo.
  • Picture of a Gulf Coast water dog (Necturus beyeri) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • An ocelot (Leopardus pardalis) at Omaha’s Henry Doorly Zoo and Aquarium.
  • Photo: A Northern pufferfish (Sphoeroides maculatus) at the Virginia Aquarium.
  • Photo: A magnificent chromodoris (Chromodoris magnifica) at Semirara Marine Hatchery Laboratory in the Philippines.
  • Photo: A Russian tortoise (Testudo horsfieldii) at Safari Land Pet Center.
  • Photo: Lane snapper (Lutjanus synagris) at Gulf Specimen Marine Lab and Aquarium.
  • A veiled Chameleon (Chamaeleo calyptratus) in Lincoln, Nebraska.
  • Photo: A geometrid moth (Euangerona valdiviae) at Fauna Andina, a conservation center near south-central Chile.
  • Critically endangered (IUCN) lemur leaf frogs (Hylomantis lemur), from the Panama, population, at Zoo Atlanta. This male and female frog are in amplexus, a state in which the male latches onto the female prior to egg laying and fertilization.
  • A vulnerable black marsh turtle (Siebenrockiella crassicollis) at the Houston Zoo.
  • An endangered Goodfellow's tree-kangaroo (Dendrolagus goodfellowi) at the Melbourne Zoo.
  • Picture of a Peruvian long tailed boa (Boa constrictor longicauda) at Pet Paradise.
  • Photo: A purple vampire crab (Geosesarma dennerle) at Petra Aqua.
  • Photo: A critically endangered pindu (Stomatepia pindu) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: A gray catbird (Dumetella carolinensis) near Hudson, Wisconsin, USA.
  • Picture of Louis, a 2-year-old painted stork (Mycteria leucocephala), at Tracy Aviary.
  • Photo: Rough scallops (Aequipecten muscosus) at Gulf Specimen Marine Lab and Aquarium.
  • Great eggfly butterfly (Hypolimnas bolina) at the Omaha Zoo.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • Photo: A bigeye shiner (Notropis boops) at the Pontotoc Ridge Preserve near Connerville, OK.
  • Photo: Natterer's gecko (Tropiocolotes nattereri) from a private collection.
  • Photo: Giant red tail gourami (Osphronemus laticlavius) at L'aquarium tropical du palais de la Porte DorŽe.
  • Picture of an Arctic tern (Sterna paradisaea) at the Buttonwood Park Zoo in New Bedford, Massachusetts.
  • Photo: A galah, Eolophus roseicapilla.
  • A satanic leaf-tailed gecko (Uroplatus phantasticus) at the Houston Zoo, Houston, Texas. (IUCN: Vulnerable)
  • A picture of a female Tiburon peninsula limia (Limia dominicensis) at Plzen Zoo in the Czech Republic. This species is from Hispaniola.
  • Photo: A male blue-striped ribbonsnake (Thamnophis sauritus nitae) from a private collection.
  • Australian king parrot (Alisterus scapularis) at Parrots in Paradise, a bird attraction in Glass House Mountains, Queensland.
  • Photo: Green-and-black poison dart frog (Dedrobates auratus) at the Sedgwick County Zoo in Wichita, Kansas.
  • Photo: Badge Huntsman (Neosparassus sp.) from the Melbourne Museum
  • The endangered (IUCN) and federally endangered Nashville crayfish (Orconectes shoupi). This animal has a very limited range, existing only in the Mill Creek watershed which runs from downtown Nashville to its suburbs. Habitat loss has restricted its range even further within Mill Creek, with more construction in recent years.
  • Photo: An Eurasian Jay (Garrulus glandarius glandarius) from a private collection in Choussy, France.
  • Photo: A long-tailed field mouse (Apodemus sylvaticus) at the Biodiversity Hall of Natural History and Science Museum.
  • Photo: A vulnerable Siamese fighting fish or betta (Betta splendens) in Lincoln, Nebraska.
  • Photo: A cormorant (Phalacrocorax carbo carbo) at Hessilhead Wildlife Rescue.
  • 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.
  • An endangered (IUCN) Golfodulcean poison frog (Phyllobates vittatus) from a private collection.
  • Photo: Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.
  • Photo: The foot of a female Ragazzi's fan-footed gecko (Ptyodactylus ragazzii) at Josh’s Frogs in Michigan.
  • Photo: A yellowfin sole (Limanda aspera) at the Alaska SeaLife Center.
  • Photo: A ten year old, southern flying squirrel (Glaucomys volans querceti) named Velcro, at the Tennessee Aquarium.
  • South Florida black swamp snake (Seminatrix pygaea cyclas) at the Archbold Biological Station.
  • Photo: An Asian forest scorpion (Heterometrus cyaneus) at Aquarium Berlin.
  • A dull day gecko (Phelsuma dubia) from a private collection.
  • Photo: A tiger sumo loach (Schistura paucireticulata) at the Singapore Zoo's River Safari area.
  • Photo: A critically endangered Sumatran elephant bull (Elephas maximus sumatranus) at Taman Safari.
  • Photo: A chopi blackbird (Gnorimopsar chopi chopi) at Fundacao Jardim Zoologico de Brasilia.
  • Australian shelducks (Tadorna tadornoides) at the Kansas City Zoo.
  • Photo: Sable (Martes zibellina) at the A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Science.
  • Photo: A male Cassin's finch (Haemorhous cassinii) at the Wildlife Rehabilitation Center of Northern Utah.
  • Central newt (Notophthalmus viridescens louisianensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • An endangered Malayan tiger, Panthera tigris jacksoni, at the Omaha Zoo.
  • A picture of a grasshopper (Parapetasia femorata) from the Moka area, South Bioko Island, Equatorial Guinea.
  • The standard morph of a sira poison frog (Ranitomeya sirensis) from a private collection.
  • Photo: A scarlet ibis (Eudocimus ruber) at the Miller Park Zoo.
  • Photo: A male guiña (Leopardus guigna guigna) from Fauna Andina in central-south, Chile.
  • Photo: Pulsing Xenia (Xenia umbellata) at Loro Parque's aquarium in Puerto de la Cruz, Tenerife, Spain
  • Photo: Blue black spider wasp (Anoplius semicinctus) at Cedar Point Biological Station.
  • Picture of a capuchinbird (Perissocephalus tricolor) at the Dallas World Aquarium.
  • Photo: 'Nyango', the only confirmed Cross River gorilla (Gorilla gorilla diehli) in captivity in the world.
  • Photo: A male blue-headed anole (Anolis allisoni) from a private collection.
  • Photo: A Gran Canaria giant lizard (Gallotia stehlini) at the Plzen Zoo in the Czech Republic.
  • Photo: A DumerilÕs wrinkled ground frog (Platymantis dorsalis) at the University of the Philippines.
  • Photo: Gulf Coast ribbon snake (Thamnophis proximus orarius) at the Omaha Zoo.
  • Photo: Savannah sparrow (Passerculus sandwichensis) at Bay Beach Wildlife Sanctuary
  • A forest robin (Stiphrornis erythrothorax) from Bioko Island, Equatorial Guinea.
  • Photo: A common house gecko (Hemidactylus frenatus) at Petra Aqua.
  • Vulnerable Stolzmann's horned frogs (Ceratophrys stolzmanni) collected near Pilalo, Ecuador.
  • A Harris’s hawk (Parabuteo unicinctus unicinctus) at the National Aviary of Colombia (Aviario Nacional de Colombia).
  • Photo: An American mink (Neovison vison evagor) at Portland Audubon Wildlife Care Center in Portland, Oregon.
  • Picture of an asp viper (Vipera aspis aspis) at the St. Louis Zoo.
  • Portrait of a male northern bobwhite quail (Colinus virginianus).
  • Picture of a critically endangered (IUCN) and federally endangered male Edward's pheasant (Lophura edwardsi) at Pheasant Heaven, a private pheasant breeding center near Clinton, NC.
  • Picture of a vulnerable male Congo peacock (Afropavo congensis) at the Saint Louis Zoo.
  • Photo: A Hermann's tortoise (Testudo hermanni boettgeri) at Parco Natura Viva in Bussolengo, Italy.
  • Cape Fear shiners (Notropis mekistocholas) a federally endangered species at a native stream fish breeding center. (IUCN: Endangered, US: Endangered)
  • Picture of an axilspot hogfish (Bodianus axillaris) at Nebraska Aquatic Supply.
  • Photo: A Northwest hesperian snail (Vespericola columbianus) at A Rocha Brooksdale Environmental Center in Surrey, BC.
  • Picture of a red-tailed boa (Boa constrictor constrictor) at the Lincoln Children's Zoo.
  • A vulnerable (IUCN) and federally threatened polar bear (Ursus maritimus) at the Tulsa Zoo.
  • Picture of a diadem dottyback (Pictichromis diadema) at Pure Aquariums.
  • Picture of a Pileated woodpecker (Dryocopus pileatus abietcola) at the Virginia Aquarium.
  • Picture of a regal fritillary (Speyeria idalia) a native to Nebraska, at the Lincoln Children's Zoo.
  • Photo: Sika, a Northern lynx (Lynx lynx lynx) at the Lisbon Zoo.
  • Photo: Saffron cod (Eleginus gracilis) at the Alaska SeaLife Center.
  • A painted wood turtle (Rhinoclemmys pulcherrima) at the Lincoln Children's Zoo, Lincoln, Nebraska.
  • Photo: A Tar River spinymussel (Parvaspina steinstansana) at the Marion Conservation Aquaculture Center.
  • Picture of an endangererd northern helmeted curassow (Pauxi pauxi) at the Dallas World Aquarium.
  • Photo: A blue naped parrot (Tanygnathus lucionensis lucionensis) at Loro Parque Fundacion.
  • Picture of an Aleutian cackling goose, Branta hutchinsii leucopareia, at Sylvan Heights Bird Park.
  • A vulnerable North American wood turtle (Glyptemys insculpta) from a private collection.
  • Photo: A male American redstart (Setophaga ruticilla) near Hudson, Wisconsin, USA.
  • Photo: Agave jumping spider (Paraphidippus basalis) at the Audubon Insectarium.
  • Photo: A juvenile great blue heron (Ardea herodias wardi) at the Chintimini Wildlife Center in Corvallis, Oregon.
  • Photo: An eastern kingbird (Tyrannus tyrannus) in Wood River, Nebraska, USA.
  • Photo: A red-necked tanager (Tangara cyanocephala cyanocephala) at the Membeca Lagos Farm, near Rio de Janeiro, Brazil.
  • Photo: A crowned spiny lizard (Acanthosaura coronate) at Petra Aqua.
  • Photo: A RiggenbachÕs reed frog (Hyperolius riggenbachi) at The Green Planet in Dubai, United Arab Emirates.
  • A picture of a silver cloud moth (Egira conspicillaris) at Graham's Quinta dos Malvedos Vineyard.
  • Picture of an endangered (IUCN) and federally endangered black-footed ferret (Mustela nigripes) at the Cheyenne Mountain Zoo.
  • A yellow-headed blackbird (Xanthocephalus xanthocephalus) at the Wildlife Center in Espanola, New Mexico.
  • Photo: Yellow-bellied sheath-tail bat (Saccolaimus flaviventris) at the Australian Bat Clinic.
  • A picture of an Arizona black rattlesnake (Crotalus cerberus).
  • Amargosa toad (Anaxyrus (Bufo) nelsoni) near Beatty, NV. (IUCN: Endangered)
  • Photo: Two Australian helmeted geckos (Diplodactylus galeatus) from a private collection.
  • Picture of an endangered Boeseman's rainbowfish (Melanotaenia boesemani) at the Oklahoma City Zoo.
  • Two Pallas's cats (Otocolobus manul) at the Columbus Zoo, Columbus, Ohio.
  • Photo: A Spanish ibex (Capra pyrenaica) at the Madrid Zoo.
  • Picture of a pajama cardinalfish (Sphaeramia nematoptera) at Omaha's Henry Doorly Zoo and Aquarium.
  • A federally endangered snail kite (Rostrhamus sociabilis) at the Audubon Center for Birds of Prey, a rehab and education center.
  • Juvenile common Garden Lizard (Calotes versicolor versicolor) at the Angkor Centre for Conservation of Biodiversity (ACCB) in Siem Reap, Cambodia.
  • Photo: Common rudd (Scardinius erythrophthalmus) at Alpenzoo in Innsbruck, Austria.
  • Photo: A pair of critically endangered southern combshells (Epioblasma penita) at the Alabama Aquatic Biodiversity Center in Marion, Alabama.
  • A blotched upside-down catfish (Synodontis nigriventris) at River Safari.
  • Photo: A great Mormon (Papilio memnon lowii) at Davao Butterfly House.
  • Photo: Pacific lamprey (Entosphenus tridentatus) at the MK Nature Center in Boise, Idaho.
  • Photo: A variable hawk (Geranoaetus polyosoma polyosoma) at the Zoológico Nacional de Chile (Chilean National Zoo).
  • Picture of a female, critically endangered Yangtze giant softshell turtle (Rafetus swinhoei) at the Suzhou Zoo in China.
  • Photo: An Anatolian spotted newt (Neurergus strauchii barani) at WWT Slimbridge in England.
  • Photo: Crescent gunnel (Pholis laeta) at the Alaska SeaLife Center in Seward, AK.
  • Juvenile mink (Neovison vison).
  • A picture of a moth in the owlet moth family Erebidae (Syllectra erycata) from the wild in Manaus, Brazil. This tropical moth ranges from southern Florida and Texas to southern Brazil.
  • Picture of an American bittern (Botaurus lentiginosus) at Tracy Aviary.
  • Manchado, a Mexican spotted owl (Strix occidentalis lucida) at The Wildlife Center in Espanola, New Mexico.
  • A white pelican (Pelecanus erythrorhynchos).
  • Picture of an endangered (IUCN) and federally endangered Hispaniolan solenodon (Solenodon paradoxus) at Parque Zoologico Nacional in the Dominican Republic.
  • Photo: A darkling beetle (Eleodes sp.) at the Audubon Butterfly Garden and Insectarium in New Orleans, Louisiana.
  • A white-cheeked turaco (Tauraco leucotis leucotis) from the Gladys Porter Zoo in Brownsville, Texas.
  • A Guthega skink (Liopholis guthega) at the Healesville Sanctuary.
  • Photo: A federally endangered, female Himalayan goral (Naemorhedus goral) at Padmaja Naidu Himalayan Zoological Park in Darjeeling, India.
  • Photo: A margined madtom (Noturus insignis) at the Marion Conservation Aquaculture Center.
  • Photo: A whiptail (Aspidoscelis sp) at Springs Preserve.
  • Picture of a critically endangered female northern white cheeked gibbon (Nomascus leucogenys) at the Endangered Primate Rescue Center in Cuc Phuong National Park, Vietnam.
  • Picture of a desert crocodile (Crocodylus suchus) at the St. Augustine Alligator Farm.
  • Picture of a Caribbean flamingo chick (Phoenicopterus ruber ruber) at the Indianapolis Zoo.
  • Photo: A female double-spurred francolin (Pternistis bicalcaratus) from a private collection.
  • Southern crawfish frog (Lithobates (Rana) areolatus (areolata ssp.) photographed in a studio in Lincoln, NE.
  • A pocket mouse (Chaetodipus sp.) at the Omaha Zoo.
  • Picture of the Everglade gray squirrel or Florida gray squirrel (Sciurus carolinensis extimus) at Ark Angels Wildlife Rescue.
  • Picture of a Hispaniola cat-eyed snake (Hypsirhynchus ferox ferox) at the Parque Zoologico Nacional in Santo Domingo, Dominican Republic.
  • Photo: A Hasselt's bamboo shark (Chiloscyllium hasseltii) at River Safari, Singapore.
  • A federally endangered Karner blue butterfly, Lycaeides melissa samuelis.
  • Photo: A talaud racket-tailed parrot (Prioniturus platurus talautensis) at Farmville de Bago, a private collection in the Philippines.
  • Photo: A juvenile Galapagos tortoise (Chelonoidis niger) at Parque de las Leyendas in Lima, Peru.
  • Picture of a peaceful dove (Geopelia placida) at Healesville Sanctuary.
  • Photo: A speckled pigeon (Columba guinea) at the Columbus Zoo.
  • A captive, five-month-old mandrill (Mandrillus sphinx) in Malabo, Equatorial Guinea. (IUCN: Vulnerable)
  • Sophie, a fennec fox (Vulpes zerda) at the Chattanooga Zoo.
  • Photo: A margay (Leopardus wiedii pirrensis) named Diego, at Zoologico de Quito.
  • A picture of a helmeted guineafowl, Numida meleagris, at the Blank Park Zoo in Des Moines, Iowa.
  • Photo: A spider decorator crab (Camposcia retusa) at the St. Louis Zoo.
  • A picture of a red-eared slider (Trachemys scripta elegans) from the Turtle Survival Center.
  • Madagascar spiny hopper frog (Scaphiophyrne pustulosa) from a private collection.
  • Picture of a rainbow lorikeet (Trichoglossus moluccanus) from Brisbane, Queensland, Australia.
  • Photo: A Pinelands Creek crayfish (Procambarus vioscai) in the Sciences and Technology Building at Nicholls State University in Thibodaux, Louisiana.
  • Photo: Auratus cichlid (Melanochromis auratus) at L'aquarium tropical du palais de la Porte DorŽe.
  • Photo: A Sierra Nevada ensatina salamander (Ensatina eschscholtzii platensis) at San Francisco State University.
  • A gecko (Hemidactylus fasciatus) with a broken tail, which will grow back, from Bioko Island, Equatorial Guinea.
  • Photo: A Madagascar hissing cockroach (Eliptorhina chopardi) from the Plzen Zoo in the Czech Republic.
  • Photo: Walking stick (Phaenopharos khaoyaiensis) at the Budapest Zoo.
  • Photo: Long-mandibled stag beetle (Cyclommatus metallifer) at the Insectarium in New Orleans.
  • A southern black widow (Latrodectus mactans) at the Audubon Zoo in New Orleans.
  • Picture of a Bri Bri morph of a strawberry poison frog (Oophaga pumilio) from a private collection.
  • Picture of a Nancy Ma's night monkey (Aotus nancymaae) at the Dallas World Aquarium.
  • Photo: A Madagascan rousette (Rousettus madagascariensis) from Madagascar.
  • Photo: An undescribed crayfish species (Cambarus cf.) collected from Clear Creek, Trenton, Alabama, by the West Liberty University Crayfish Conservation Lab. This species is brand new to science and will be named in the near future.
  • Photo: A male Pennsylvania funnel web spider (Agelenopsis pennsylvanica) from Lincoln, Nebraska.
  • A Western harvest mouse, Reithrodontomys megalotis.
  • Photo: An Indian star tortoise (Geochelone elegans) at the Taronga Zoo.
  • Photo: A female Canada spruce grouse (Falcipennis canadensis canace) at Grouse Park Waterfowl in Cascade, Idaho.
  • Picture of a vulnerable dwarf Burmese python (Python bivittatus progschai) from a private collection.
  • Photo: Blesbok (Damaliscus pygargus phillipsi) at Plzen Zoo in the Czech Republic.
  • Photo: A white-crested guan (Penelope pileata) at BioParque do Rio. This animal is VU on the IUCN Red List.
  • Picture of a chimney swift (Chaetura pelagica) at the WildCare Foundation.
  • Photo: Butter Hamlet (Hypoplectrus unicolor) at the Albuquerque BioPark Aquarium.
  • A picture of a cyprinid fish (Leucos aula) at Alpenzoo in Innsbruck, Austria.
  • Photo: Royal starfish (Astropecten articulatus) at Gulf Specimen Marine Lab.
  • Photo: A southern Appalachian brook trout (Salvelinus fontinalis) at the Tennessee Aquarium.
  • Photo: Frilled lizard (Chlamydosaurus kingi) at Lilydale High School, Victoria, Australia.
  • Photo: A female von Höhnel's chameleon (Trioceros hoehnelii) from a private collection in St. Augustine, Florida.
  • Photo: A western diurnal gecko (Gonatodes caudiscutatus) at Centro Jambatu in Quito, Ecuador.
  • Photo: A green-cheeked, or red-crowned, Amazon parrot (Amazona viridigenalis) at the Kansas City Zoo.
  • A buff-crested bustard (Lophotis gindiana) at the Columbus Zoo.
  • Photo: A big-headed turtle (Platysternon megacephalum shiui) from Asia at the Sedgwick County Zoo.
  • Picture of a black swan (Cygnus atratus) at the Kansas City Zoo.
  • Photo: An endangered male southern mountain reedbuck (Redunca fulvorufula fulvorufula) at Tierpark Berlin.
  • Photo: A blue-spotted wood dove (Turtur afer) at a field museum in Gorongosa National Park.
  • Siebenrock's snake-necked turtle (Chelodina siebenrocki) at the Tennessee Aquarium.
  • Photo: European golden plover (Pluvialis apricaria) at Monticello Center in Italy.
  • Canal zone treefrog (Hypsiboas rufitelus) at Zoo Atlanta.
  • An Anegada Island iguana (Cyclura pinguis) at the San Diego Zoo, San Diego, California. This critically endangered (IUCN) and federally endangered species has just 200 left in the wild.
  • Photo: A northern cardinal, Cardinalis cardinalis cardinalis, near Hudson, Wisconsin.
  • Photo: Red burrowing crayfish, Cambarus carolinus, at the Crayfish lab in West Liberty University in West Liberty, WV. This specimen is from the Saluda River System, SC.
  • A Sumatran blood python (Python curtus) at Zoo Atlanta.
  • Photo: A Parastenophis betsileanus from a private collection.
  • An endangered Caucasus viper (Vipera kaznakovi) at the St. Louis Zoo.
  • A picture of a lineated barbet (Psilopogon lineatus) at the Jurong Bird Park.
  • Photo: A Yellow-breasted fruit dove (Ramphiculus occipitalis) at the Avilon Zoo.
  • A picture of a black-tailed prairie dog (Cynomys ludovicianus ludovicianus) at Zoo Atlanta.
  • Photo: Black marsh crabs (Sesarma cinereum) at Gulf Specimen Marine Lab and Aquarium.
  • Photo: Green guapote (Mayaheros beani) at the Arizona-Sonora Desert Museum.
  • Photo: A rusty-spotted cat (Prionailurus rubiginosus phillips) at the Exmoor Zoo in England.
  • Photo: Linear cobalt crayfish, Cambarus gentryi, at West Liberty University in West Liberty, WV. This specimen is from Duck River Basin, TN.
  • Photo: A bee-like robber fly (Laphria species) from the wild at Bobcat Prairie near Denton, NE. This robber fly mimics a bumblebee as a way to hunt other insects.
  • Picture of a critically endangered (IUCN) and federally endangered gharial (Gavialis gangeticus) at the Gharial and Turtle Rehabilitation Center in Lucknow, India.
  • Black crocodile newt (Tylototriton taliangensis) at the National Mississippi River Museum and Aquarium in Dubuque, IA.
  • A scissor grinder cicada (Neotibicen pruinosus) in Lincoln, NE.
  • A splash-backed poison dart frog (Adelphobates galactonotus) at Omaha's Henry Doorly Zoo.
  • Picture of a Caspian tern (Hydroprogne caspia) at Tracy Aviary.
More images
Loading more images…