Meet the world’s animals.

Photos: 12,038 · Stories: 19,488

• Black Uakari Cacajao melanocephalus

  

  The black uakari has a bare black face and lives in forests along rivers in the northern Amazon. Its back color varies between subspecies.

• Four-striped Ground Squirrel Lariscus hosei

  

  The Four-striped Ground Squirrel has four black stripes on its back and orange underparts. It lives on Borneo and is active by day on the forest floor.

• Tasmanian devil Sarcophilus harrisii

  

  A meat-eating marsupial of Tasmania, with a stocky body, a broad head and mostly black fur.

• Spiny Pocket Mouse Chaetodipus spinatus

  

  The spiny pocket mouse has stiff, spine-like hairs on its rump and sides. It lives in rocky desert scrub, is nocturnal, and stores seeds.

• Hill's Horseshoe Bat Rhinolophus hilli

  

  This horseshoe bat is known from a very small area in Nyungwe National Park, southwestern Rwanda. The species treatment lists two localities.

• Norway lemming Lemmus lemmus

  

  A small rodent of cold mountains and tundra from Norway toward the Kola Peninsula.

• Littledale's Whistling Rat Parotomys littledalei

  A rodent of arid southern Africa. It feeds on fresh leaves and other green plants, and builds connected burrows beneath shrubs.

• Chilean Red Bat Lasiurus varius

  The Chilean Red Bat occurs in Argentina and Chile and is solitary. Its long, narrow wings support fast flight, but make it less maneuverable along forest edges and in clearings.

• Giant otter Pteronura brasiliensis

  A large otter of South American rivers and lakes. It lives in family groups and hunts fish mainly during the day.

• Madagascan Straw-colored Fruit Bat Eidolon dupreanum

  The Madagascan Straw-colored Fruit Bat is endemic to Madagascar. A diet study in the east found that it ate mainly fruit and also used eucalyptus flowers.

• Yucatán Gray Mouse Opossum Tlacuatzin gaumeri

  The Yucatán Gray Mouse Opossum is a small opossum of the Yucatán Peninsula. Its original description gives a muted grayish-brown back and pale cream belly and cheeks. Specimens have also been collected in sub-evergreen forest in Quintana Roo.

• Wolf's Mona Monkey Cercopithecus wolfi

  This monkey has a red patch in the middle of its back, a pale belly, and reddish-brown hind legs. It moves through lowland forest canopies in parts of the Democratic Republic of the Congo and Uganda.

• Pampas Deer Ozotoceros bezoarticus

  A slender, long-legged deer of South American grasslands. In Argentina, current populations remain in limited areas.

• Least Sac-winged Bat Balantiopteryx io

  This small bat occurs in lowland areas from Mexico into Central America. It mainly roosts in caves, and males have a small pouch in the wing membrane.

• Honduran Yellow-shouldered Bat Sturnira hondurensis

  This bat is recorded from Mexico to northern Nicaragua. Its fur is dark gray to dark brown, with a paler underside. Many individuals, especially adult males, have reddish or yellow shoulder patches. It mainly eats fruit.

• Trowbridge's Shrew Sorex trowbridgii

  Trowbridge’s shrew tunnels through the forest litter. Its sooty back, paler underside, and long two-toned tail help distinguish it.

• Bay Duiker Cephalophus dorsalis

  The Bay Duiker is a forest antelope with a chestnut body, black legs, and a dark line along its back. It is mainly nocturnal and is associated with lowland tropical forest.

• Smith's Red Rock Hare Pronolagus rupestris

  This hare lives in rocky country. It hides in crevices or beneath rocks by day and feeds on grasses and shrub shoots at night.

• Western Grey Kangaroo Macropus fuliginosus

  A large kangaroo from southern Australia that eats grasses and shrubs.

• Black Tamarin Saguinus niger

  The black tamarin is a small monkey with golden-brown streaks in its black coat. It moves through the canopy by day, feeding mainly on fruit in family groups.

• Napo Saki Pithecia napensis

  The Napo saki is a saki monkey of northwestern South American forests. Its long, coarse coat mixes gray, cream, and black hairs. A survey in northern Peru recorded it in both flooded forest and terra firme forest.

• Yellow-bellied Marmot Marmota (Petromarmota) flaviventris

  The yellow-bellied marmot has a yellowish belly and reddish-brown back. Yellowstone National Park's account describes it feeding on plants in rocky grassland and hibernating.

• Agile Antechinus Antechinus agilis

  The agile antechinus is a small marsupial of southeastern mainland Australia. It forages around leaf litter and fallen logs, eating insects and small vertebrates.

• San Joaquin Kangaroo Rat Dipodomys nitratoides

  This small kangaroo rat has powerful hind legs and lives in valleys of central California.