Joel Sartore / Photo Ark / Southern white-breasted hedgehog (Erinaceus concolor) portrait, Wildlife Hospital of Israel & Ramat Gan Safari Park, Israel. Captive.
01735081
Joel Sartore / Photo Ark / Colorado chipmunk (Neotamias quadrivittatus) portrait, Nebraska Wildlife Rehab. Captive, occurs in Colorado, Utah, Arizona and New Mexico, USA.
01735053
Joel Sartore / Photo Ark / North African hedgehog (Atelerix algirus algirus) portrait, Virginia Aquarium and Marine Science Center. Captive, occurs in North Africa and Spain.
01735052
Joel Sartore / Photo Ark / North African hedgehog (Atelerix algirus algirus) portrait, Virginia Aquarium and Marine Science Center. Captive, occurs in North Africa and Spain.
01735051
Joel Sartore / Photo Ark / Desert kangaroo rat (Dipodomys deserti) portrait, Henry Doorly Zoo and Aquarium, Nebraska, USA. Captive.
01734721
Joel Sartore / Photo Ark / Kinkajou (Potos flavus chiriquiensis) male, lying on its back, portrait, Rescue Center Costa Rica, Alajuela, Costa Rica. Captive.
01734720
Joel Sartore / Photo Ark / Kinkajou (Potos flavus chiriquiensis) male, portrait, Rescue Center Costa Rica, Alajuela, Costa Rica. Captive.
01735033
Joel Sartore / Photo Ark / Roborovski hamster (Phodopus roborovskii) portrait, Berlin Zoo. Captive, occurs in Central Asia.
01735032
Joel Sartore / Photo Ark / Lesser Egyptian jerboa (Jaculus jaculus) male, portrait, Philadelphia Zoo. Captive, occurs in Africa and the Middle East.
Joel Sartore / Photo Ark / Long-tailed chinchilla (Chinchilla lanigera) portrait, Zoo Atlanta. Captive, occurs in Chile. Endangered.
01734981
Joel Sartore / Photo Ark / Long-tailed chinchillas (Chinchilla lanigera) pair, portrait, Zoo Atlanta. Captive, occurs in Chile. Endangered.
01734943
Joel Sartore / Photo Ark / Short-eared elephant shrew (Macroscelides proboscideus) portrait, Knoxville Zoo. Captive, occurs in southern Africa.
01734547
Joel Sartore / Photo Ark / Makassar tarsier (Tarsius fuscus) portrait, Night Safari, Singapore. Captive, occurs in Indonesia.
01731908
Joel Sartore / Photo Ark / Lemur leaf frog (Agalychnis lemur) portrait, Baltimore Aquarium. Captive, occurs in Central America. Critically endangered
01733861
Joel Sartore / Photo Ark / Chiriqui singing mouse (Scotinomys xerampelinus) portrait, from the wild near San Jose, Costa Rica.
01733852
Joel Sartore / Photo Ark / Mandarin vole (Lasiopodomys mandarinus vinogradovi) portrait, Russian Academy of Science. Captive, occurs in China and Korean Peninsula.
01733844
Joel Sartore / Photo Ark / Chinese pygmy dormouse (Typhlomys cinereus) portrait, private collection. Captive, occurs in China and Vietnam.
01733843
Joel Sartore / Photo Ark / Chinese pygmy dormouse (Typhlomys cinereus) portrait, private collection. Captive, occurs in China and Vietnam.
01733830
Joel Sartore / Photo Ark / White-eared opossum (Didelphis albiventris) portrait, Parque de Las Leyendas, Peru. Captive.
01733824
Joel Sartore / Photo Ark / Sugar glider (Petaurus breviceps) portrait, Rolling Hills Wildlife Adventure. Captive, occurs in Australia.
01733823
Joel Sartore / Photo Ark / Sugar glider (Petaurus breviceps) portrait, Rolling Hills Wildlife Adventure. Captive, occurs in Australia.
01733811
Joel Sartore / Photo Ark / Eastern meadow vole (Microtus pennsylvanicus pennsylvanicus) portrait, from the wild, Watertown, New York, USA.
01733810
Joel Sartore / Photo Ark / Eurasian harvest mouse (Micromys minutus) standing on hind legs, portrait, Omaha's Henry Doorly Zoo and Aquarium. Captive, occurs in Europe and Asia.
01731753
Joel Sartore / Photo Ark / Mohol bushbaby (Galago moholi) portrait, Cleveland Metroparks Zoo. Captive, occurs in Africa.
01731751
Joel Sartore / Photo Ark / Northern lesser galago (Galago senegalensis senegalensis) portrait, Plzen Zoo. Captive, occurs in Africa.
01731708
Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) head portrait, Duke Lemur Center. Captive, occurs in Madagascar.
01731438
Joel Sartore / Photo Ark / Funny slender-legged treefrog (Osteocephalus deridens) portrait, from the wild, Centro de Rescate Amazonico, Peru.
01731801
Joel Sartore / Photo Ark / Gold-and-white marmoset (Mico chrysoleucos) portrait, Fundacao Jardim Zoologico de Brasilia, Brazil. Captive.
01731797
Joel Sartore / Photo Ark / Silvery marmoset (Mico argentatus) portrait, Plzen Zoo. Captive, occurs in Brazil.
01731796
Joel Sartore / Photo Ark / Black-chinned emperor tamarin (Saguinus imperator imperator) portrait, Dallas World Aquarium. Captive, occurs in South America.
01731791
Joel Sartore / Photo Ark / Pygmy marmoset (Cebuella pygmaea) portrait, Lincoln Children's Zoo. Captive, occurs in Amazonia.
01731789
Joel Sartore / Photo Ark / Pygmy marmoset (Cebuella pygmaea) portrait, Lincoln Children's Zoo. Captive, occurs in Amazonia.
01728483
Joel Sartore / Photo Ark / Four-toed jerboa (Allactaga tetradactyla) portrait, Plzen Zoo. Captive, occurs in Asia.
01728479
Joel Sartore / Photo Ark / Humboldt's flying squirrel (Glaucomys oregonensis) female, portrait, Big Bear Alpine Zoo. Captive, occurs in North America.
01728477
Joel Sartore / Photo Ark / Humboldt's flying squirrel (Glaucomys oregonensis) female, portrait, Big Bear Alpine Zoo. Captive, occurs in North America.
01728476
Joel Sartore / Photo Ark / Eurasian red squirrel (Sciurus vulgaris leucourus) looking up, portrait, Wildwood Trust, UK. Captive.
01707406
Joel Sartore / Photo Ark / Helmeted gecko (Tarentola chazaliae) male, portrait, Josh'sFrogs. Captive, occurs in northwest Africa. Vulnerable.
01707305
Joel Sartore / Photo Ark / American marten (Martes americana) with tongue out, portrait, Indianapolis Zoo. Captive.
01707304
Joel Sartore / Photo Ark / Ring-tailed lemur (Lemur catta) portrait, Indianapolis Zoo. Captive, occurs in Madagascar. Endangered.
01706209
Joel Sartore / Photo Ark / African pygmy hedgehog (Atelerix albiventris) portrait, John Ball Zoo. Captive, occurs Central and Eastern Africa.
01706029
Joel Sartore / Photo Ark / Ringtail cat (Bassariscus astutus arizonensis) female, portrait, Miller Park Zoo. Captive.
01706028
Joel Sartore / Photo Ark / Ringtail cat (Bassariscus astutus arizonensis) female, portrait, Miller Park Zoo. Captive.
01706027
Joel Sartore / Photo Ark / Ringtail cat (Bassariscus astutus arizonensis) female, portrait, Miller Park Zoo. Captive.
01706017
Joel Sartore / Photo Ark / African pygmy hedgehog (Atelerix albiventris) portrait, John Ball Zoo. Captive, occurs in Central and Eastern Africa.
01706016
Joel Sartore / Photo Ark / African pygmy hedgehog (Atelerix albiventris) portrait, John Ball Zoo. Captive, occurs in Central and Eastern Africa.
01706015
Joel Sartore / Photo Ark / African pygmy hedgehog (Atelerix albiventris) portrait, John Ball Zoo. Captive, occurs in Central and Eastern Africa.
01698838
Joel Sartore / Photo Ark / Spotted seal (Phoca largha) portrait, Alaska SeaLife Center, Seward, Alaska, USA. Captive.
01703020
Joel Sartore / Photo Ark / Black-footed cat (Felis nigripes) portrait, Omaha's Henry Doorly Zoo and Aquarium. Captive. Federally endangered.
01702978
Joel Sartore / Photo Ark / Female Bobcat (Lynx rufus) sitting, portrait, Miller Park Zoo. Captive.
01695131
Hermann Brehm / Female Stonechat (Saxicola torquata) perched on a branch, Germany. March.
Joel Sartore / Photo Ark / Desert pocket mouse (Chaetodipus penicillatus penicillatus) portrait, Liberty Wildlife. Captive.
01701225
Joel Sartore / Photo Ark / Northern red-backed vole (Clethrionomys rutilus) sitting on hind legs, eating, portrait, A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Science. Captive
01701211
Joel Sartore / Photo Ark / Orange-spined hairy dwarf porcupine (Coendou spinosus) sitting on hind legs, portrait, Membeca Lagos Farm, Brazil. Captive.
01701208
Joel Sartore / Photo Ark / Chinese hamster (Cricetulus griseus) portrait, Tierpark Berlin. Captive.
01701207
Joel Sartore / Photo Ark / Chinese hamster (Cricetulus griseus) portrait, Tierpark Berlin. Captive.
01701204
Joel Sartore / Photo Ark / Greater white-toothed shrew (Crocidura russula russula) portrait, Biodiversity Hall of Natural History and Science Museum Porto. Captive.
01701194
Joel Sartore / Photo Ark / Gunnison's prairie dog (Cynomys gunnisoni zuniensis) aged 5 years, walking, portrait, Lapoint, Utah. Captive.
Joel Sartore / Photo Ark / Gunnison's prairie dog (Cynomys gunnisoni zuniensis) portrait, Liberty Wildlife. Captive.
01701195
Joel Sartore / Photo Ark / Gunnison's prairie dog (Cynomys gunnisoni zuniensis) aged 5 years, sitting upright on hind legs, portrait, Lapoint, Utah. Captive.
01701180
Joel Sartore / Photo Ark / Small five-toed jerboa (Scarturus elater) standing upright, Moscow Zoo. Captive.
01701158
Joel Sartore / Photo Ark / Four-toed jerboa (Allactaga tetradactyla) standing upright on hind legs, portrait, Plzen Zoo. Captive. Vulnerable.
Shane Gross / Two Gentoo penguins (Pygoscelis papua) walking side by side in the snow, Neko Harbour, Antarctic Peninsula, Antarctica.
01696592
Shane Gross / Gentoo penguin (Pygoscelis papua) and Chinstrap penguin (Pygoscelis antarcticus) walking side by side on snow, Barrientos Island, Antarctica.
01696551
Shane Gross / Weddell seal (Leptonychotes weddellii) with its head out of the water, Coronation Island, South Orkneys, Antarctica, Southern Ocean.
01696550
Shane Gross / Pair of Gentoo penguins (Pygoscelis papua) bonding, Neko Harbour, Antarctica.
01696548
Shane Gross / Pair of Gentoo penguins (Pygoscelis papua) bonding, Neko Harbour, Antarctica.