860-283138 - Polar Bears playing in the snow, Barter Island Alaska

860-283033 - Polar bears playing on the ice, Barter Island Alaska

860-283073 - Polar bears playing on snow, Barter Island Alaska

860-283736 - Eurasian wild boar young playing, France

860-283139 - Polar bear playing in the snow, Barter Island Alaska

860-283076 - Polar bears playing on snow, Barter Island Alaska

860-283075 - Polar bears playing on snow, Barter Island Alaska

860-283081 - Polar bears playing in water, Barter Island Alaska

860-283080 - Polar bears playing in water, Barter Island Alaska

860-283032 - Polar bears playing on the ice, Barter Island Alaska

860-285172 - Spanish Ibex playing on a rock, Spain

860-283078 - Polar bears playing on shore, Barter Island Alaska

860-286507 - Polar bear cubs playing in the snow, Barter Island Alaska

860-286508 - Polar bear cubs playing in the snow, Barter Island Alaska

860-283030 - Polar bears playing on the ice, Barter Island Alaska

860-283074 - Polar bears playing on snow, Barter Island Alaska

860-283027 - Polar bears playing on the ice, Barter Island Alaska

860-283029 - Polar bears playing on the ice, Barter Island Alaska

764-4880 - Yellow-Bellied Marmot or Yellowbelly Marmot (Marmota flaviventris) pups playing, San Juan National Forest, Colorado, United States of America, North America

832-374427 - Two young polar bears (Ursus maritimus) play fighting with each other, Kaktovik, North Slope region, Beaufort Sea, Alaska, America

1112-2148 - Southern elephant seal bulls (Mirounga leonina) mock-fighting in Gold Harbor, South Georgia, UK Overseas Protectorate, Polar Regions

1112-2139 - Antarctic fur seal pups (Arctocephalus gazella) mock-fighting in Gold Harbor, South Georgia, UK Overseas Protectorate, Polar Regions

832-288692 - Folk in battle, historical medieval city parade, in Canellis, LÂ¥assedio di Canelli, Canelli, Asti Province, Piemont, Italy

832-288694 - Folk in battle, historical medieval city parade, in Canellis, LÂ¥assedio di Canelli, Canelli, Asti Province, Piemont, Italy

238-6463 - Red Panda, Chengdu Panda Reserve, Sichuan, China, Asia

869-1024 - polar bear 02 play fighting behavior in snow

832-175870 - Several hundred citizens of Berlin use the snow for a snowball fight "Kreuzberg vs. Neukoelln", that has been organised on the internet, Goerlitzer Park, Berlin, Germany, Europe

832-175868 - Several hundred citizens of Berlin use the snow for a snowball fight "Kreuzberg vs. Neukoelln", that has been organised on the internet, Goerlitzer Park, Berlin, Germany, Europe

1113-43689 - Young Brown Bears playing in water, Ursus arctos, Bavarian Forest National Park, Bavaria, Lower Bavaria, Germany, Europe

1112-104 - Galapagos fur seal (Arctocephalus galapagoensis) bulls mock-fighting underwater, Genovesa Island, Galapagos Islands, Ecuador, South America

1112-106 - Galapagos fur seal (Arctocephalus galapagoensis) bulls mock-fighting, Genovesa Island, Galapagos Islands, Ecuador, South America

1112-101 - Galapagos fur seal (Arctocephalus galapagoensis) bulls mock-fighting underwater, Genovesa Island, Galapagos Islands, Ecuador, South America

1112-102 - Galapagos fur seal (Arctocephalus galapagoensis) bulls mock-fighting underwater, Genovesa Island, Galapagos Islands, Ecuador, South America

1112-103 - Galapagos fur seal (Arctocephalus galapagoensis) bulls mock-fighting underwater, Genovesa Island, Galapagos Islands, Ecuador, South America

1112-105 - Galapagos fur seal (Arctocephalus galapagoensis) bulls mock-fighting underwater, Genovesa Island, Galapagos Islands, Ecuador, South America

764-3657 - Swift fox (Vulpes velox) kits playing, Pawnee National Grassland, Colorado, United States of America, North America

764-3610 - Swift fox (Vulpes velox) kits playing, Pawnee National Grassland, Colorado, United States of America, North America

1198-28 - Pack of timber wolves (canis lupus) asserting hierarchy, captive

1190-164 - Red fox, vulpes vulpes. Two cubs play-fighting - standing on ther hind legs; summer .

1190-165 - Red fox, vulpes vulpes. Two cubs play-fighting. Summer .

1190-172 - Red fox, vulpes vulpes. Two cubs play-fighting. Summer .

930-14 - Two Bottlenose dolphins (Tursiops truncatus truncatus) play fighting with the head of one and tail of the other showing at the surface. Moray Firth, Scotland (RR)

930-8 - Bottlenose dolphins (Tursiops truncatus truncatus) play fighting with the tail of one and head of the other, together at the surface. Moray Firth, Scotland

1036-67 - Hectors dolphins (Cephalorhynchus hectori) leaping at dawn. Possibly males trying to out compete each other by jumping the highest instead of fighting. Akaroa, New Zealand

975-37 - An IDP camp (internally displaced people) in Amuru district of Northern Uganda has been created to accommodate the mass of Ugandan refugees fleeing the LRA (Lords Resistance Army) who are fighting the Ugandan government and its people. Here a young child has found a stick to play with. Amuru, Uganda, East Africa

979-3046 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-9213 - Antarctic fur seal pup (Arctocephalus gazella) mock-fighting on South Georgia, Southern Ocean

979-3048 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-6899 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-9077 - Adult brown bear pair (Ursus arctos) mock-fighting at Scidmore Cut in Glacier Bay National Park, Alaska, USA. Pacific Ocean

979-1225 - Two young California Sea Lion bulls (Zalophus californianus) mock-fighting in the Gulf of California (Sea of Cortez), Mexico.

979-3049 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-3047 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-9291 - Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island in the Southern Ocean

979-9078 - Adult brown bear pair (Ursus arctos) mock-fighting at Scidmore Cut in Glacier Bay National Park, Alaska, USA. Pacific Ocean

979-6903 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-3043 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-1264 - Northern (Steller) sea lion (Eumetopias jubatus) colony on sail rock in Frederick Sound, southeastern Alaska

979-1263 - Northern (Steller) sea lion (Eumetopias jubatus) colony on sail rock in Frederick Sound, southeastern Alaska

979-6897 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-6901 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-6932 - Brown bear cubs (Ursus arctos) playing and mock fighting on the beach near the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-3042 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-3051 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-6900 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-3044 - Adult male Galapagos fur seals (Arctocephalus galapagoensis) mock-fighting on lava flow of Santiago Island in the Galapagos Island Archipelago, Ecuador

979-6902 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-6898 - Mother brown bear sow (Ursus arctos) mock fighting with her two-year old cub at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-6930 - Brown bear cubs (Ursus arctos) playing and mock fighting on the beach near the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

979-6933 - Brown bear cubs (Ursus arctos) playing and mock fighting on the beach near the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

832-486 - Mackenzie Valley, Canadian - or Alaskan Timber Wolves (Canis lupus occidentalis) playing, fighting at a zoo in Germany, Europe

832-27117 - Polar bears (Ursus maritimus), playful fight, Hudson Bay, Canada, North America

832-14641 - Fighting, playing wolves, cub, Mackenzie Wolf, Alaskan Tundra Wolf or Canadian Timber Wolf (Canis lupus occidentalis) in the snow

832-10912 - Meerkat (Suricata suricatta)

832-1597 - Lion (Panthera leo), playing cubs, Masia Mara, national park, Kenya, East Africa

764-1190 - Two hippopotamus (Hippopotamus amphibius) fighting, Masai Mara Game Reserve, Kenya, East Africa, Africa

772-1956 - Female lion (Panthera leo), Masai Mara National Reserve, Kenya, East Africa, Africa

764-971 - Two bull moose (Alces alces) facing off before play fighting, Roosevelt National Forest, Colorado, United States of America, North America

768-239 - Boy and girl (6-8) on beach playing with ball

768-240 - Boy and girl (6-8) on beach playing with ball

748-71 - Polar Bear with cubs, (Ursus maritimus), Churchill, Manitoba, Canada

743-209 - Two African elephants (Loxodonta africana) wrestling, Addo National Park, South Africa, Africa

748-84 - Polar Bear with cubs, (Ursus maritimus), Churchill, Manitoba, Canada

743-226 - Burchell's zebra (Equus burchelli) fighting, Itala Game Reserve, South Africa

743-210 - Two African elephants (Loxodonta africana) fighting, Etosha National Park, Namibia, Africa