Donald M. Jones / Minden / Bighorn Sheep (Ovis canadensis) ram, western Canada

Ingo Arndt / Casqued chameleon male {Chamaeleo calyptratus} Yemen

Tui De Roy / Black rhino (Diceros bicornis) with very long horn, Lewa Wildlife Conservancy, Laikipia, Kenya. October.

Tui De Roy / Three White rhinoceroses (Ceratotherium simum) walking together, Solio Game Reserve, Laikipia, Kenya. September.

Danny Green / Big horn sheep (Ovis canadensis) male looking down from snowy ledge, portrait. Yellowstone National Park, USA, January.

Sylvain Cordier / Gelada baboon (Theropithecus gelada) female carrying baby on back, dominant male in background. Debre Libanos, Rift Valley, Ethiopia.

Will Burrard-Lucas / Black rhinoceros (Diceros bicornis) mother and calf, Lewa & Borana Conservancy, Kenya.

Will Burrard-Lucas / White rhino (Ceratotherium simum) female and juvenile, Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. EDITORIAL USE ONLY. All other uses require clearance

Will Burrard-Lucas / White rhino (Ceratotherium simum), portrait. Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. EDITORIAL USE ONLY. All other uses require clearance

Jack Dykinga / Bighorm sheep (Ovis canadensis) males grouped together before the rutting season. Valley of Fire State Park, Nevada, USA, February.

Guy Edwardes / Highland Cattle, Glen Nevis, Lochaber, Scotland, UK, June.

Jed Weingarten / Wild Wonders of China / Takin (Budorcas taxicolor) Tangjiahe Nature Reserve, Sichuan Province, China. April.

Neil Aldridge / Black rhinoceros (Diceros bicornis) stands in evening light on Chief's Island in Okavango Delta, Botswana,. This rhino was released in the Okavango Delta as part of efforts to rebuild the rhino popula...

Neil Aldridge / White rhinoceros (Ceratotherium simum) with a long horn, Marakele National Park, South Africa.

Bence Mate / African buffalo (Syncerus caffer) at waterhole at night, Mkuze, South Africa Third place in the Nature Portfolio category of the World Press Photo Awards 2017.

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

Neil Aldridge / Black rhinoceros (Diceros bicornis) feeding in early morning light, Kariega Game Reserve. South Africa.

Klein & Hubert / Herd of Rove goats (Capra aegagrus hircus) walking to feeding grounds, Provence, France.

Wim van den Heever / Blue wildebeest (Connochaetes taurinus) herd silhouetted against the rising sun with clouds in the background. Greater Kruger National Park, South Africa

Wim van den Heever / Two Gemsbok bulls (Oryx gazella) males fighitng, Etosha National Park, Namibia.

Niall Benvie / Black faced sheep ram with twisted horns, Mull, Scotland, UK. January.

Edwin Giesbers / European bison (Bison bonasus) close up portrait showing horns, Zuid-Kennemerland National Park, the Netherlands. January. Reintroduced species.

Staffan Widstrand / White rhinoceros (Ceratotherium simum) close up portrait, iMfolozi National Park, South Africa

Gerrit Vyn / Muskox (Ovibos moschatus) feeding on willows. North Slope, Alaska. September.

Wim van den Heever / Cape Buffalo (Syncerus caffer) in darkness, Masai Mara, Kenya.

Sharon Heald / African buffalo (Syncerus caffer) low angle portrait, Chobe National Park, Botswana.

Dave Watts / Addax (Addax nasomaculatus) rear view, captive in Rabat Zoo, Morocco. Critically endangered.

Eric Baccega / Sulphur formation, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

David Pattyn / Alpine ibex (Capra ibex), portrait of young male. Alps, Aosta Valley, Gran Paradiso National Park, Italy. September.

David Pattyn / Alpine ibex (Capra ibex), portrait of adult male though horns of another resting Ibex. Alps, Aosta Valley, Gran Paradiso National Park, Italy. September.

Denis-Huot / Portrait of male Waterbuck (Kobus ellipsiprymnus) in the rain, Masai-Mara game reserve, Kenya.

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

Denis-Huot / Rear view of Wildebeest (Connochaetes taurinus) herd crossing the Mara river, Masai-Mara game reserve, Kenya.

Juan Carlos Munoz / Bontebok (Damaliscus pygargus) in fynbos vegetation, West Coast National Park, Western Cape province, South Africa, September 2012.

Ben Cranke / American Bison (Bison bison) foraging in the snow, Yellowstone National Park, Wyoming, USA. January.

Anup Shah / Cape buffalo (Syncerus caffer) young male approaching with curiosity. Masai Mara Nationa Reserve, Kenya. Taken with remote wide angle camera.

Eric Medard / Ibex (Capra ibex) males fighting, Jura, Switzerland, captive

Radomir Jakubowski / Chamois (Rupicapra rupicapra) portrait, Vosges Mountains, France. October 2012. Highly Honoured in the wildlife category Nature? Best Photography Windland Smith Rice International Awards Competition...

Juan Carlos Munoz / Walia ibex (Capra walie) herd, Simien Mountains National Park, Ethiopia

Igor Shpilenok / European Bison (Bison bonasus) calf and mother portrait. 'Mefody', first calf born to reintroduced herd in Bryansk Forest. Bryansk Forest Zapovednik, Kamchatka, Russian Far East, May.

Denis-Huot / African Buffalo (Syncerus caffer) males fighting, Nakuru National park, Kenya

Alex Hyde / Highland cow on heather moorland, Curbar Edge, Peak District National Park, Derbyshire. August.

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

Ernie Janes / Long Horn cattle in meadow, Norfolk, UK July