Mark Taylor / Tabby kittens, Stanley and Fosset, 12 weeks, lounging together.

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Thomas Mangelsen / Polar Bear (Ursus maritimus) mother resting with cub in snow, Churchill, Manitoba, Canada

Thomas Mangelsen / Polar Bear (Ursus maritimus) sitting up, Churchill, Manitoba, Canada

Thomas Mangelsen / Bengal Tiger (Panthera tigris tigris) resting on log, Bandhavgarh National Park, Madhya Pradesh, India

Tui De Roy / Southern Elephant Seal (Mirounga leonina) juveniles lounging in tussock grass, Sea Lion Island, Falkland Islands

Mitsuaki Iwago / Red Kangaroo (Macropus rufus) male lounging, Australia

Mitsuaki Iwago / Red Kangaroo (Macropus rufus) male resting, Australia

Michio Hoshino / Polar Bear (Ursus maritimus) trio loafing, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) trio loafing in snow, Churchill, Manitoba, Canada

Mark Taylor / Cute tabby kittens, Stanley and Fosset, 9 weeks old, lounging together.

Mark Taylor / Tabby kittens, Stanley and Fosset, 3 months old, lounging together.

Mark Taylor / Tabby kittens, Stanley and Fosset, 4 months old, lounging together.

Andrew Parkinson / Bengal Tiger (Panthera tigris) sub-adult, approximately 17-19 months old, cools off by lounging in a secluded forest pool. Endangered. Bandhavgarh National Park, India. Non-ex.

Bryan and Cherry Alexander / Juvenile Elephant seals (Mirounga genus) lounging on beach. Gold Harbour, South Georgia.

Mark Taylor / Two ginger kittens, lounging together.

Mark Taylor / Two ginger kittens, lounging together.

Mark Taylor / Two ginger kittens, lounging together.

Theo Allofs / Orangutan (Pongo pygmaeus) male lying on ground, Tanjung Puting National Park, Indonesia

Theo Allofs / Orangutan (Pongo pygmaeus) male lying on ground, Tanjung Puting National Park, Indonesia

Ingo Arndt / Pacific Walrus (Odobenus rosmarus divergens) juvenile bull resting, Bristol Bay, Round Island, Alaska

Ingo Arndt / Pacific Walrus (Odobenus rosmarus divergens) bulls resting, Bristol Bay, Round Island, Alaska

Ingo Arndt / Pacific Walrus (Odobenus rosmarus divergens) bulls resting, Bristol Bay, Round Island, Alaska

Konrad Wothe / Polar Bear (Ursus maritimus) mother with two cubs sleeping in the snow, Churchill, Manitoba, Canada

Mitsuaki Iwago / Leopard (Panthera pardus) lounging in a tree, Serengeti National Park, Tanzania

Ingo Arndt / Southern Elephant Seal (Mirounga leonina) female laying in grass, South Georgia Island

Patricio Robles Gil / Leopard (Panthera pardus) resting in shade, Kruger National Park, South Africa

Pete Oxford / Ring-tailed Lemur (Lemur catta) sunning on rocks near Andringitra Mountains, vulnerable, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) trio lounging on rocks in the Andringitra Mountains, vulnerable, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) trio resting in large cactus, vulnerable, Berenty Reserve, southern Madagascar

Mark Raycroft / German Shepherd (Canis familiaris) two adults lounging on green lawn

ZSSD / Grizzly Bear (Ursus arctos horribilis) resting on rocks, native to Alaska

Mark Raycroft / Black Bear (Ursus americanus) adult lounging in tree

Pete Oxford / Leopard (Panthera pardus) lounging in tree, Okavango Delta, Botswana

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Konrad Wothe / Steller's Sea Lion (Eumetopias jubatus) group congregating on rock, West Brothers Island, Inside Passage, Alaska

Konrad Wothe / Steller's Sea Lion (Eumetopias jubatus) group congregating on rock, West Brother Island, Inside Passage, Alaska

Konrad Wothe / Steller's Sea Lion (Eumetopias jubatus) group congregating on rock, West Brothers Island, Inside Passage, Alaska

Konrad Wothe / Clouded Leopard (Neofelis nebulosa) in enclosure, threatened, native to Southeast Asia

Thomas Mangelsen / Polar Bear (Ursus maritimus) lounging near Churchill, Manitoba, Canada

Yva Momatiuk & John Eastcott / Grizzly Bear (Ursus arctos horribilis) young female with porcupine quills stuck in lip, Denali National Park and Preserve, Alaska

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

Pete Oxford / Southern Anteater (Tamandua tetradactyla) lounging in tree, South America

Matthias Breiter / Pacific Walrus (Odobenus rosmarus divergens) overlooking sea, Pacific Walrus Islands State Game Sanctuary, Alaska

Gerry Ellis / Mountain Lion (Puma concolor) lounging on rocks, North America

Tui De Roy / Spectacled Bear (Tremarctos ornatus) male resting in tree, rehabilitation center in Andean foothills, Cerro Chaparri, Peru

Tui De Roy / Spectacled Bear (Tremarctos ornatus) male resting in tree, rehabilitation center in Andean foothills, Cerro Chaparri, Peru

ZSSD / Polar Bear (Ursus maritimus) rolling in snow, native to North America

Mitsuaki Iwago / Domestic Cat (Felis catus) three strays, Santorini Island, Greece

Gerry Ellis / African Elephant (Loxodonta africana) keeper Jospat lying in shade with one week old sunburned orphan Kinna, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Gerry Ellis / Leopard (Panthera pardus) female resting in tree, Moremi Wildlife Reserve, Botswana

Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) adult female taking a look around between naps on tidal flats, Katmai National Park, Alaska

Gerry Ellis / Giant Panda (Ailuropoda melanoleuca) resting against tree

Tui De Roy / Komodo Dragon (Varanus komodoensis) large males basking on sun baked ground, Komodo Island, Indonesia

Thomas Mangelsen / Polar Bear (Ursus maritimus) juvenile sitting in snow, Churchill, Manitoba, Canada