Mark Raycroft / Minden / Border Collie (Canis familiaris), North America

David Noton / Dog walker on Vartenham Hill on a frosty New Year's Day, Milborne Port, Somerset, England. January 2021.

Bence Mate / Wild dog (Lycaon pictus) two pups playing in dust, Mkuze, South Africa. August. Highly commended in the Mammals category of the GDT European Wildlife Photographer of the Year Competition 2020.

Tony Heald / African wild dog (Lycaon pictus) portrait. Chobe National Park Botswana. Digitally enhanced sepia image.

Bence Mate / African wild dogs (Lycaon pictus) juveniles playing with the leg of an impala, trying to drag it in three different directions. Mkuze, South Africa. Commended in Glanzlichter photo competition 2020.

TJ Rich / Four chocolate working cocker spaniels on wall. Mother and offspring. Monmouth, Monmouthshire, Wales

TJ Rich / Black working cocker spaniel in bluebells, in beech woodland, Micheldever Woods, Hampshire, UK

TJ Rich / Wirehaired daschund, Staffordshire bull terrier and Hungarian viszla in autumn colours, Wiltshire, UK

Karine Aigner / Portrait of an African wild dog (Lycaon Pictus) running on green grass, Zimbabwe.

Neil Aldridge / African wild dog (Lycaon pictus) blurred motion photograph, Save Valley Conservancy, Zimbabwe.

Neil Aldridge / African wild dog (Lycaon pictus) pup peers around the base of a giant baobab tree on Save Valley Conservancy. Zimbabwe.

Lynn M Stone / Yellow Labrador retriever in fresh snow, Clinton, Connecticut, USA

Wim van den Heever / African Wild dogs or Cape hunting dogs (Lycaon pictus) at close range taken from ground level, Zimanga Private Game Reserve, South Africa.

Mark Taylor / Golden Cocker Spaniel dog, Henry, age 3 years, jumping up.

Mark Taylor / Cockapoo, Cocker spaniel cross Poodle puppy sitting.

Mark Taylor / Cockapoo, Cocker spaniel cross Poodle puppy on hind legs.

Mark Taylor / Tricolour merle Collie puppy, Indie, age 10 weeks.

Mark Taylor / Patterdale terrier dog puppy, Korka, age 4 months.

Mark Taylor / Australian Shepherd pup, age 16 weeks, in play-bow stance.

Mark Taylor / Black-and-white Springer Spaniel puppy, age 6 weeks.

Mark Taylor / Yellow Labrador Retriever puppy, age 9 weeks, lying with head up.

Mark Taylor / Yellow Labrador Retriever puppy, 8 weeks old, sitting with raised paw

Mark Taylor / Black and white Jack-a-poo, Jack Russell cross Poodle, pup, 8 weeks old, jumping up.

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

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

Bence Mate / African wild dogs (Lycaon pictus) play fighting, Mkuze, South Africa

Pedro Narra / Local people gathered for education program to conserve the wildlife of the Bissagos Islands including the endangered Green turtle (Chelonia mydas) Bissagos Islands, Guinea Bissau, October 2014. 3rd P...

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.

Klein & Hubert / Wirehaired Dachshund running in snow in French Alps, Haute-Savoie, France.

Klein & Hubert / Wire-haired dachshund in lavender field, Provence, France.

Wim van den Heever / African wilddog (Lycaon pictus) portrait, with another dog in the background. Okavango Delta, Botswana.

Roland Seitre / Asiatic wild dog (Cuon alpinus) captive, occurs in Asia

Laurent Geslin / African wild dog (Lycaon pictus) portrait, Okavango Delta, Botswana

Laurent Geslin / African wild dog (Lycaon pictus) portrait, Okavango Delta, Botswana.

Laurent Geslin / African wild dog (Lycaon pictus) with pups, Okavango Delta, Botswana.

Laurent Geslin / African wild dog (Lycaon pictus) with pup, Okavango Delta, Botswana.

Laurent Geslin / African wild dog (Lycaon pictus) interacting with pups age two months, okavango delta, Botswana

Klein & Hubert / Wirehaired Dachshund running on snow, Haute-Savoie, Alps, France.

Klein & Hubert / Wirehaired Dachshund running on snow, French Alps, Haute-Savoie, France.

Klein & Hubert / Tabby and white semi-longhaired kitten in defensive posture, arching back and fluffing up tail as two Border collie puppies approach, France.

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) puppy, North America

Mark Raycroft / Siberian Husky (Canis familiaris) puppy running in winter, North America

Mark Raycroft / Golden Retriever (Canis familiaris) running in winter, North America

Mark Raycroft / Chesapeake Bay Retriever (Canis familiaris) running, North America

Donald M. Jones / Black-tailed Prairie Dog (Cynomys ludovicianus) group, South Dakota

Donald M. Jones / Black-tailed Prairie Dog (Cynomys ludovicianus) pair greeting, South Dakota

Donald M. Jones / Black-tailed Prairie Dog (Cynomys ludovicianus) pair greeting, South Dakota