Mark Taylor / Cheeky ginger kitten, Ollie, 10 weeks, reaching up and batting the ear of Boxer puppy NOT AVAILABLE FOR BOOK USE

Mark Taylor / Two playful Bulldog puppies, 11 weeks.

Anup Shah / Two baby African elephants with trunks entwined. Masai Mara, Kenya

Alex Mustard / Dugong (Dugong dugon) male, swims over seagrass meadow (Halophila stipulacea) accompanied by a young Golden trevally (Gnathanodon speciosus). Marsa Nabaa, Marsa Alam, Egypt. Red Sea

Alex Mustard / Dugong (Dugong dugon) male feeding on a seagrass meadow (Halophila stipulacea), accompanied by a young Golden trevally (Gnathanodon speciosus). Marsa Nabaa, Marsa Alam, Egypt. Red Sea

Alex Mustard / Dugong (Dugong dugon) male feeding on a seagrass meadow (Halophila stipulacea), accompanied by a young Golden trevally (Gnathanodon speciosus). Marsa Nabaa, Marsa Alam, Egypt. Red Sea

Alex Mustard / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) swimming over Seagrass (Halophila stipulacea) meadow. Marsa Nabaa, Marsa Alam, Egypt.

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

Lorraine Bennery / Red-bellied lemur (Eulemur rubriventer) huddling together in tree branches. Anjozorobe Special Reserve, Madagascar. Vulnerable species, endemic.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two adults brooding chicks. Atka Bay, Antarctica. September.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two adults brooding chicks. One chick exhibiting aggression towards other. Atka Bay, Antarctica. September.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two adults with chicks aged six to eight weeks. Atka Bay, Antarctica. September.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two chicks aged six to eight weeks huddling together. Atka Bay, Antarctica. September.

Houdin and Palanque / Decken's sifaka (Propithecus deckenii) grooming each other, Tsimembo area, Madagascar. Lenses for Conservation project.

Houdin and Palanque / Decken's sifaka (Propithecus deckenii) grooming each other, Tsimembo area, Madagascar. Lenses for Conservation project.

Karine Aigner / Cuban parakeets (Psittacara euops) preening each other, Bermejas, Cuba. Endemic.

Eric Baccega / Coalition of two African male lions (Panthera leo) resting on the banks of the Luangwa river, dry season, South Luangwa National Park, Zambia

Ann & Steve Toon / Impala (Aepyceros melampus) allo-grooming, iMfolozi game reserve, KwaZulu-Natal, South Africa, August

Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) adult, walking over Humming Frog (Chiasmocleis royi) without preying on it. Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a com...

Tui De Roy / Galapagos lava lizard (Microlophus albemarlensis) sitting on Marine iguana (Amblyrhynchus cristatus) Punta Espinosa, Fernandina Island, Galapgos.

Jeff Foott / Yacare caiman (Caiman yacare) with butterfly on snout, Cuiaba River, Pantanal Matogrossense National Park, Pantanal, Brazil.

Tui De Roy / Waved albatross (Phoebastria irrorata) group of three on nest, Punta Suarez, Espanola Island, Galapagos

Staffan Widstrand / Wild Wonders of China / Pallas's cat (Otocolobus manul) two sitting side by side, Tibetan Plateau, Qinghai, China

Ross Hoddinott / Harvest mice (Micromys minutus) on grass stems, Devon, UK. July 2016. Captive.

Danny Green / Three Sea otters (Enhydra lutris) resting on ice, Alaska, June

Edwin Giesbers / RF - European ground squirrels / Sousliks (Spermophilus citellus)greeting, Gerasdorf, Austria. April. (This image may be licensed either as rights managed or royalty free.)

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

Chris & Monique Fallows / Dusky dolphins (Lagenorhynchus obscurus) porpoising, Puerto Madryn, Peninsula Valdez, Argentina, December.

Alex Hyde / RF - Scarlet macaw (Ara macao) pair preening, Osa Peninsula, Costa Rica. (This image may be licensed either as rights managed or royalty free.)

Tony Wu / Swimmer stroking 'Scar', a male Sperm whale (Physeter macrocephalus) who often seems to seek out and enjoy contact with people. Caribbean, January 2010. Model released.

Mark Taylor / Black and white Border collie looking sideways at black and white kitten. NOT AVAILABLE FOR BOOK USE

Jane Burton / British Shorthair kittens, Benedict, ginger, and Joan, silver tabby.

Anup Shah / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female grooming a domestic dog. Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) females hugging to reinforce rank. Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female grooming a domestic dog. Jodhpur, Rajasthan, India. March.

Wim van den Heever / Julia heleconia (Dryas julia) butterfly on head of Yacare caiman (Caiman yacare) Pantanal, Brazil.

Wim van den Heever / South African fur seals (Arctocephalus pusillus pusillus) surfing out on wave.Walvisbay, Namibia.

Edwin Giesbers / Brown headed spider monkey (Ateles fusciceps) group resting together, captive occurs in Central and South America.

Gerrit Vyn / Pair of adult Trumpeter Swans (Cygnus buccinator) in flight. Skagit County, Washington. January.

Mark Taylor / Tabby cats, Picasso and Smudge, age 3 months, together. Smudge with his paws up on Picasso.

Ben Hall / Marine Iguana (Amblyrhynchus cristatus) on rock with lava lizard sitting on its head, Galapagos Islands, May.

Klein & Hubert / African elephant (Loxodonta africana) silhouetted at sunset with African openbill (Anastomus lamelligerus) Chobe National Park, Botswana.

Klein & Hubert / Two Norman domestic donkeys, viewed from below, France.

Klein & Hubert / Domestic Provence donkeys dust bathing, France.