Meet the world’s animals.

Photos: 12,676 · Stories: 19,540

• Fallow deer Dama dama

  

  The fallow deer is recognized by the male’s broad, palmate antlers. Coat forms include spotted, white and dark individuals.

• African Clawed Frog Xenopus laevis

  In captive trials, tadpole growth and development changed in water treated with pesticides.

• Common Mud Turtle Kinosternon subrubrum

  This turtle sometimes shelters around alligator nests.

• Ostrich Struthio camelus

  A flightless bird with a long neck and strong legs, living in African grasslands and other open habitats.

• Southern Mountain Cavy Microcavia australis

  This rodent has a compact body and a pale ring around each eye. It is active by day and feeds on leaves beneath thornbushes.

• Sulawesi Goshawk Lophospiza griseiceps

  The Sulawesi Goshawk is a hawk of Sulawesi and nearby islands. Its gray head and dark bars across the pale underside are useful clues to its appearance.

• Harbor porpoise Phocoena phocoena

  A small porpoise of cool Northern Hemisphere waters. It uses bays and estuaries and mainly eats schooling fish.

• European Tree Frog Hyla arborea

  In a survey in western Zealand Flanders, the maximum number of males calling in one night helped estimate the seasonal male population in pools.

• Eastern Glass Lizard Ophisaurus ventralis

  This lizard sometimes basks and shelters around alligator nests.

• House sparrow Passer domesticus

  A small bird of towns and farms. Males and females differ in facial and chest markings; males have a black throat bib.

• Chacoan Peccary Catagonus wagneri

  The Chacoan peccary looks pig-like and also eats cacti.

• Mountain Chiffchaff Phylloscopus sindianus

  The Mountain Chiffchaff is a small leaf warbler of mountain woodland and alpine scrub. Its pale brown body is marked by a white eyebrow.

• Aardvark Orycteropus afer

  An African mammal that searches for ants and termites on the ground at night and uses burrows as shelter.

• Rhinella mirandaribeiroi

  A toad found in the South American Cerrado, a landscape that includes open grasslands and savanna.

• Timber Rattlesnake Crotalus horridus

  This rattlesnake sometimes moves around alligator nests.

• Black-crowned Night Heron Nycticorax nycticorax

  A heron with red eyes and a black-and-gray back, often active from evening onward.

• Dugong Dugong dugon

  A mammal of warm coastal seas that feeds mainly on seagrass and uses shallow sheltered waters.

• American Oystercatcher Haematopus palliatus

  A large shorebird that searches tidal flats and beaches for shellfish with its long orange-red bill.

• Mountain Hare Lepus timidus

  This hare ranges across much of Europe and northern Asia, with coat changes that vary by region and climate.

• Cone-head Chameleon Chamaeleo calyptratus

  The veiled chameleon is a large arboreal chameleon with grasping feet and a fully prehensile tail. In an indoor study of nine animals, it used its tail for support when crossing gaps.

• Long-footed Tree Shrew Tupaia longipes

  The long-footed tree shrew is a small mammal of Borneo's forests. It moves quickly over leaf litter while searching for small prey.

• European robin Erithacus rubecula

  A small bird seen in British gardens and parks. Adults have reddish breasts, and males and females look alike.

• Great Potoo Nyctibius grandis

  A nocturnal nightbird with large eyes and a very wide gape. It stays still on a branch by day and catches flying prey at night.

• Brown Tree Lizard Anolis sagrei

  This lizard is native to Caribbean islands and parts of Central America. It is often brown, with darker markings on its back.