Matthew Maran / Red fox (Vulpes Vulpes) resting curled up close up, North London, England UK

Danny Green / Coastal brown bears (Ursus arctos) resting, Lake Clarke National Park, Alaska, September

Alex Hyde / Greater horseshoe bat (Rhinolophus ferrumequinum) roosting in cave. Croatia. November.

Wim van den Heever / Leopard (Panthera pardus) male rolling on a rock. Greater Kruger National Park, South Africa, July.

Mark Taylor / Tabby kitten, Picasso, age 3 months, sleeping on a fluffy rug.

Pal Hermansen / Inuit sled dogs resting, near Ittoqortoormiit, Scoresbysund, Greenland. Second Prize in the Nature category of the Spider Black and White Photography Competition 2015.

Suzi Eszterhas / Indian rhinoceros (Rhinoceros unicornis) mother and calf (age 1-2 weeks) Kaziranga National Park, India.

Espen Bergersen / Svalbard reindeer (Rangifer tarandus platyrhynchus) rear view lying down, resting at sunset, Svalbard, Norway. April.

Uri Golman / Svalbard reindeer (Rangifer tarandus platyrhynchus) in velvet, resting, Svalbard, Norway, August.

Pete Oxford / Kittens resting on beams. These animals are kepts as pets but sometimes eaten in the Apatani Tribe, Ziro Valley, Himalayan Foothills, Arunachal Pradesh, North East India. November 2014.

Anup Shah / Dusky leaf monkey (Trachypithecus obscurus) juvenile yawning . Khao Sam Roi Yot National Park, Thailand. March 2015.

Staffan Widstrand / Northern Viscacha or Vizcacha (Lagidium peruanum) resting in an old man made structure, Machu Picchu UNESCO World Heritage Site, Peru. February.

Danny Green / Snow monkey (Macaca fuscata) close up with eyes cast down, Nagano, Japan, February

Theo Webb / Bengal tiger (Panthera tigris) cubs following their mother, Bandhavgarh National Park, India.

Andy Trowbridge / Four Yellow-eyed penguins (Megadyptes antipodes) walking up a sand dune towards their nests, Otago Peninsula, Otago, South Island, New Zealand. September. Endangered Species.

Andy Trowbridge / Yellow-eyed penguin (Megadyptes antipodes) walking up a sand dune towards its nest. Otago Peninsula, Otago, South Island, New Zealand. February. Endangered Species.

Steven Kazlowski / Polar bear (Ursus maritimus) sow with two juveniles walk along the ice edge during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska

Denis-Huot / African elephant (Loxodonta africana) male covered with mud at a water hole, Tsavo East National Park, Kenya. August.

Jordi Chias / Loggerhead turtle (Caretta caretta) close up, Los Gigantes, South Tenerife, Canary Islands, Atlantic

Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) flying past snowy mountain peak, Hokkaido, Japan, February

Markus Varesvuo / Black Grouse (Tetrao tetrix) displaying with breath vapor at dawn, Utajarvi, Finland, April

Andy Trowbridge / White-tailed sea eagle (Haliaeetus albicilla) in flight. Flatanger, Norway, May.

Anup Shah / Celebes / Black crested macaque (Macaca nigra) sub-adult male yawning, Tangkoko National Park, Sulawesi, Indonesia.

Jurgen Freund / Spectacled flying fox (Pteropus conspicillatus) babies swaddled in cloth ready to sleep, Tolga Bat Hospital, Atherton, North Queensland, Australia. January 2008.

Sandesh Kadur / Stump Tailed Macaque (Macaca arctoides) female yawning in canopy holding infant. Gibbon Wildlife Sanctuary, Assam, India.

Lisa Hoffner / A baby orphan Elephant (Loxodonta africana) leaning against the rump of its friend. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, August 2010.

Peter Cairns / 2020VISION / Pair of Gannets (Morus bassanus) mutual preening, Bass Rock, Firth of Forth, Scotland, UK, June. Photographer quote: 'I never get tired of watching gannets. This pair who momentarily lined up in perfe...

Mark Taylor / Blue Bearded Collie puppy, 3 months, yawning.

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) male baby 'Thor' aged 8-9 months portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. July 2010. Rehabilitated and rel...

Angelo Gandolfi / Bicycle pilgrims resting in front of Santiago de Compostela cathedral, after cycling the Camino de Santiago ("Way of St. James"). Galicia, Spain, July 2008.

Jane Burton / Dalmation yawning portrait

Nick Garbutt / RF- Wallace's flying / gliding frog (Rhacophorus nigropalmatus) perching on understorey vegetation at night, Danum Valley, Sabah, Borneo. (This image may be licensed either as rights managed or royalt...

Jabruson / Mountain gorilla asleep {Gorilla beringei} Virunga NP, Congo. "Rafiki" killed by roaming militia after Rwandan crisis.

Suzi Eszterhas / Leopard (Panthera pardus) female stretching, Jao Reserve, Botswana

Mark Raycroft / English Bulldog (Canis familiaris) lying in leaves

Mark Raycroft / English Bulldog (Canis familiaris) puppy laying on grass with tennis balls, tired after playing

Edwin Giesbers / Tawny owl (Stix aluco) behind tree trunk, portrait. Near Amsterdam, The Netherlands. February.

Doug Gimesy / Koala (Phascolarctos cinereus) female aged 12 months undergoing health check, veterinary nurse adminstering oxygen following anaesthetic. Joey's mother died from a terminal chlamydia infection. Te...

Ernie Janes / RF - Gelada baboon (Theropithecus gelada) male resting, captive. (This image may be licensed either as rights managed or royalty free.)

Ernie Janes / RF - Gelada baboon (Theropithecus gelada) male resting, captive. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / Siberian tiger (Panthera tigris altaica) female and cub, age 3 months, asleep resting, Captive

Edwin Giesbers / Siberian tiger (Panthera tigris altaica) female and cub, age 3 months, asleep resting, Captive

Sylvain Cordier / Hawaiian monk seal (Monachus schauinslandi) portrait, Sand Island, Midway, Hawaii

Klein & Hubert / African elephant (Loxodonta africana) mother pushing up tired calf with trunk, Chobe National Park, Botswana.

Klein & Hubert / African elephant (Loxodonta africana) mother pushing up tired calf with trunk, Chobe National Park, Botswana.

Philippe Clement / Eurasian lynx (Lynx lynx) sleeping on branch in tree canopy in forest. Captive

Yashpal Rathore / Cheetah (Acinonyx jubatus) female and cubs, five cubs suckling and playing around resting mother. Brood of seven cubs, a record for the area. Masai Mara National Reserve, Kenya.

Fred Olivier / Antarctic fur seal (Arctocephalus tropicalis) exhausted on beach, much further north than its distribution, enters sea, Steep Point, Western Australia, 2018.