Mark Raycroft / German Shorthaired Pointer (Canis familiaris) laying on rock wall

Mark Raycroft / Golden Retriever (Canis familiaris) portrait of mother and puppy resting on green grassy lawn

Mark Raycroft / German Shepherd (Canis familiaris) adult resting in snow

Pete Oxford / Giant Panda (Ailuropoda melanoleuca) reclining in snow, Wolong Valley, China

Yva Momatiuk & John Eastcott / African Lion (Panthera leo) female portrait of adult female on termite mound, Masai Mara National Reserve, Kenya

Thomas Mangelsen / Polar Bear (Ursus maritimus) rolling in snow, Hudson Bay, Churchill, Manitoba, Canada

Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) cub in forest in fall, Katmai National Park, Alaska

Konrad Wothe / White-tailed Deer (Odocoileus virginianus) fawn amid ferns, North America

Thomas Mangelsen / Polar Bear (Ursus maritimus) mother and cub resting on ice field, Churchill, Manitoba, Canada

Yva Momatiuk & John Eastcott / Muskox (Ovibos moschatus) cow during rutting season, North Slope, Alaska

Gerry Ellis / Jaguar (Panthera onca) portrait, Belize Zoo, Belize

Matthias Breiter / Polar Bear (Ursus maritimus) male resting on ice, Churchill, Manitoba, Canada