Anup Shah / Masai giraffe (Giraffa camelopardalis tippelskirchi) crossing the Mara River - wide angle perspective, Masai Mara National Reserve, Kenya. August 2009.

Ingo Arndt / Grizzly Bear / Coastal Brown Bear (Ursus arctos horribilis) searching for clams on tidal flats, Lake Clark National Park, Alaska, USA, June.

Bryan and Cherry Alexander / Emperor penguins (Aptenodytes forsteri) chick begging for food, with another chick nearby, Atka Bay, Antarctica

Charlie Summers / American Buffalo (Bison bison) gather at the carcass of a fallen member of the herd and pay their respects as they sniff, lick and nudge it. Buffalo will visit the carcass like this for weeks, the sam...

Charlie Summers / American Buffalo (Bison bison) gather at the carcass of a dead member of the herd and sniff, lick and nudge it. Wind Cave National Park, South Dakota, USA, September.

Charlie Summers / American Buffalo (Bison bison) bulls with a dead cow. Buffalo will visit the carcass for weeks and nudge and lick the remains. Wind Cave National Park, South Dakota, September.

Jean E. Roche / Bedraggled dog keeping out of flood waters in branches, Arles during December 2003 flood, Camargue, France.

Jabruson / Eastern chimpanzee (Pan troglodytes schweinfurthii) juveniles in cage, confiscated from poachers, housed in Epulu, Okapi Wildlife Reserve, Orientale Province, North-East, Democratic Republic of Congo.

Jabruson / Chimpanzee (Pan troglodytes schweinfurthii) in cage, confiscated from poachers, housed in Epulu, Okapi Wildlife Reserve, Orientale Province, North-East, Democratic Republic of Congo

Claudio Contreras / Gulf grouper (Mycteroperca jordani), IUCN Endangered, Cabo Pulmo National Park, Sea of Cortez (Gulf of California), Mexico, July

Roland Seitre / Giant Anteater (Myrmecophaga tridactyla) in habitat, Brazil. Vulnerable species.