Lynn M Stone / Bighorn sheep {Ovis canadensis} Female seeking refuge from male Jasper NP Alberta Canada

Ann & Steve Toon / Springbok (Antidorcas marsupialis) herd fleeing predator, Kgalagadi Transfrontier Park, South Africa.

Ann & Steve Toon / Sable (Hippotragus niger), Chobe National Park, Botswana, June

Neil Aldridge / Steenbok (Raphicerus campestris) female standing framed by a fallen tree, Mapungubwe National Park, Limpopo Province, South Africa.

Neil Aldridge / Sable antelope (Hippotragus niger) bull charging through the shallows of the Selinda Spillway, with another behind, northern Botswana, August.

Neil Aldridge / Eland (Tragelaphus derbianus) male in evening light, Kariega Game Reserve, South Africa

Wim van den Heever / Two Cheetah (Acinonyx jubatus) chasing Springbok (Antidorcas marsupialis) Kgalagadi, South Africa

Wim van den Heever / Cheetah (Acinonyx jubatus) hunting Springbok (Antidorcas marsupialis) trying to trip up the prey, Kgalagadi, South Africa

Wim van den Heever / Cheetah (Acinonyx jubatus) hunting Springbok (Antidorcas marsupialis) Kgalagadi, South Africa

Wim van den Heever / Springbok (Antidorcas marsupialis) herd reflected in waterhole. Etosha National Park, Namibia, June.

Klein & Hubert / Eland (Taurotragus oryx) male drinking, Botswana.

Wim van den Heever / Leopard (Panthera pardus) hunting Springbok (Antidorcas marsupialis) Etosha, Namibia, Sequence 4 of 5

Wim van den Heever / Leopard (Panthera pardus) hunting Springbok (Antidorcas marsupialis) Etosha, Namibia,

Wim van den Heever / Leopard (Panthera pardus) hunting Springbok (Antidorcas marsupialis) Etosha, Namibia, Finalist in the Mammals Category of the Wildlife Photographer of the Year 2015.

Cheryl-Samantha Owen / African lioness (Panthera leo) sitting patiently in the long grass, watching herd of Common eland (Tragelaphus oryx). Focus on lion. Grumeti Reserve, Northern Tanzania.

Denis-Huot / Two male Thomson's gazelles (Eudorcas thomsonii) fighting, Masai-Mara game reserve, Kenya.

Denis-Huot / Lioness (Panthera leo) and Thomson's gazelles (Eudorcas thomsonii) silhouetted at sunset, Masai-Mara game reserve, Kenya.

Denis-Huot / Olive baboon (Papio anubis) males fighting over newborn Thomson's gazelle (Eudorcas thomsonii) prey, Masai-Mara game reserve, Kenya.

Denis-Huot / Nile crocodile (Crocodylus niloticus) lunging at Thomson's gazelle (Eudorcas thomsonii) in water, Mara river, Masai-Mara game reserve, Kenya.

Denis-Huot,Denis-Huot / Lion (Panthera leo) male playing with a newborn topi before killing it (Damaliscus korrigum) Masai-Mara Game Reserve, Kenya. Vulnerable species.

Denis-Huot / Impala (Aepyceros melampus) female and calves, Masai-Mara game reserve, Kenya

Denis-Huot / Impala (Aepyceros melampus) male, Masai-Mara Game Reserve, Kenya

Will Watson / Black Welsh Mountain sheep portrait, Herefordshire, UK

Loic Poidevin / Sheep (Ovis aries) flock herded together with ear tags and paint markings. Ossoue valley, French Pyrenees, September.

XI ZHINONG / Tibetan antelope (Pantholops hodgsonii) male, Kekexili, Qinghai, Tibetan Plateau, China, November

Steven Kazlowski / Dall sheep (Ovis dalli) solitary animal at sunset with a storm moving across the sky, Denali National Park, interior Alaska, USA

Roy Mangersnes / Greater kudu (Tragelaphus strepsiceros) jumping over a stream, Okavango Delta, Botswana, November.

Paul Harris / 2020VISION / Domestic sheep (Ovis aries) grazing on urban pasture, Mudchute Farm, Isle of Dogs, London, England, UK, August. Did you know? The domestication of sheep is hugely important to humans - more than a bil...

Chris Gomersall / 2020VISION / Two newly clipped Domesitc sheep grazing in pasture at RSPB's Hope Farm, Cambridgeshire, UK, May 2011.

Chris Gomersall / 2020VISION / Flock of newly clipped Domesitc sheep grazing in pasture at RSPB's Hope Farm, Cambridgeshire, UK, May 2011.

Tony Heald / Black faced Impala (Aepyceros melamis petersi) female jumping, Etosha National Park, Namibia

Tony Heald / Black faced Impala (Aepyceros melamis petersi) female jumping, Etosha National Park, Namibia

Roland Seitre / Western Giant Eland (Tragelaphus / Taurotragus derbianus), the world's largest antelope. Critically endangered. Captive. Fathala Reserve, Toubacouta, Senegal, 2011.

Roland Seitre / Family of Hirola / Hunter's Antelope (Beatragus hunteri) . Critically endangered. Ishaqbini Reserve, Kenya, Africa, 2009.

Roland Seitre / Hirola / Hunter's Antelope (Beatragus hunteri) in profile. Critically endangered. Ishaqbini Reserve, Kenya, Africa, 2009.

Roland Seitre / Scimitar Oryx (Oryx dammah) at the breeding program at Reserve du Ferlo Nord, near Ranero in Senegal. Captive. Previously common, over-hunting and habitat destruction through the 20th century has left...

Roland Seitre / Scimitar Oryx (Oryx dammah) at the breeding program at Reserve du Ferlo Nord, near Ranero in Senegal. Captive. Previously common, over-hunting and habitat destruction through the 20th century has left...

Laurie Campbell / Black-faced sheep (Ovis domesticus) ewe with lamb, Lanarkshire, Scotland, April

Gerrit Vyn / Dall sheep (Ovis dalli) yearling lamb running across alpine tundra, Denali National Park, Alaska, USA

Gerrit Vyn / Dall sheep (Ovis dalli) rams head butting, one behaviour by which males establish dominance during the Autumn mating season. Denali National Park, Alaska, USA

Andy Rouse / Impala (Aepyceros melampus) male jumping during rut. Masai Mara, Kenya, Africa.

Nick Turner / Cotswolds Lion rare breed sheep (Ovis aries) and the village of Naunton at sunset, Gloucestershire, UK, June 2001.

Brent Stephenson / Domestic Sheep (Ovis aries) ewe and two lambs, probably Romney x Perendale. Unshorn. Cape Kidnappers, Hawkes Bay, New Zealand, September.

Ole Jorgen Liodden / Greater Kudu (Tragelaphus strepsiceros) jumping over water. Okavango, Botswana, November.

Gary K. Smith / Domestic sheep (Ovis aries) being moved from pen at livestock market after auction, Hawes Mart, Yorkshire, UK, September 2011

Mary McDonald / Impala (Aepyceros melampus) mother grooming her newborn foal in rain. Lake Nakuru National Park, Kenya, East Africa.

David Tipling / 2020VISION / Manx Loaghtan Sheep (Ovis aries) used for grazing on unimproved grassland on Minsmere RSPB Reserve, habitat for breeding Stone Curlews, Suffolk Sandlings, Suffolk, UK, February 2011

David Tipling / 2020VISION / Manx Loaghtan Sheep (Ovis aries) used for grazing on unimproved grassland on Minsmere RSPB Reserve, habitat for breeding Stone Curlews, Suffolk Sandlings, Suffolk, UK, February 2011