Southern elephant seal (Mirounga leonina) bull issuing a vocalization challenge at Gold Harbour on South Georgia, Polar Regions

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead fur seal pup at St. Andrews Bay, South Georgia

Mackenzie Valley Wolves, Canadian Timber Wolves (Canis lupus occidentalis), young playing in the snow

Mackenzie Valley Wolves, Canadian Timber Wolves (Canis lupus occidentalis), young playing in the snow

Amadillo (Dasypodidae), peninsula Valdes, Patagonia, east coast, Atlantic Ozean, Argentina, South America

Young Snow Monkeys, Japanese Macaques (Macaca fuscata) playing in snow, snowfall, Japanese Alps, Japan, Asia

Two elephants playfully fighting, African Elephant (Loxodonta africana), Etosha National Park, Tsumcor waterhole, Namibia, Africa

Two elephants playfully fighting, African Elephant (Loxodonta africana), Etosha National Park, Tsumcor waterhole, Namibia, Africa

Two elephants playfully fighting, African Elephant (Loxodonta africana), Etosha National Park, Tsumcor waterhole, Namibia, Africa

Four friends laughing as they tussle for a football

Woman smiling she tussles with her friends for a football