Anup Shah / Mixed herd of Common or Plains zebra (Equus quagga burchellii) and Eastern white-bearded wildebeest (Connochaetes taurinus) - remote camera. Masai Mara National Reserve, Kenya.

Richard Du Toit / Red-billed Oxpecker (Buphagus erythrorhynchus) on Burchell's Zebra (Equus burchellii), Mkhuze Game Reserve, KwaZulu-Natal, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) trio nuzzling, Itala Game Reserve, South Africa

Bence Mate / Zebra at waterhole at night, Mkuze, South Africa Third place in the Nature Portfolio category of the World Press Photo Awards 2017.

Bence Mate / African elephant (Loxodonta africana) and Zebra (Equus quagga) at waterhole at night, Mkuze, South Africa Third place in the Nature Portfolio category of the World Press Photo Awards 2017.

Christophe Courteau / Plains zebra (Equus burchelli) drinking in a dust storm, Boteti River, Kalahari Desert, Botswana.

Frederique Olivier / Young Burchell's zebra (Equus burchellii) playing, biting and kicking its mother, Serengeti NP, Tanzania.

Christophe Courteau / Male BurchellÕs zebra (Equus quagga burchellii) pulling the head of a dead pregnant female that died due to complications whilst giving birth, trying to wake her up, Etosha National Park, Namibia. Par...

Ann & Steve Toon / Cape buffalo (Syncerus caffer) at waterhole at night with plains zebra (Equus quagga), Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Ann & Steve Toon / Plains zebra (Equus quagga) drinking at waterhole at night, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Neil Aldridge / Plain's zebra (Equus quagga) biting the neck of a rival during a fight Hluhluwe imfolozi Park. South Africa.

Neil Aldridge / Plain's zebra (Equus quagga) close up of face, Kariega Game Reserve. South Africa.

Richard Du Toit / Burchell's Zebra (Equus burchellii) pair nuzzling, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) females nuzzling, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) mother and foal, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) foals, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) parents tending to foal, Rietvlei Nature Reserve, South Africa

Ingo Arndt / Cheetah (Acinonyx jubatus) male walking by Burchell's Zebra (Equus burchellii) herd, Masai Mara, Kenya

Wim van den Heever / Plains zebra (Equus quagga) at sunset, Savuti Marsh, Botswana.

Wim van den Heever / Plains zebra (Equus quagga) at sunset, Savuti Marsh, Botswana.

Wim van den Heever / Plains zebra (Equus quagga) group of four including foal at sunset, Savuti Marsh, Botswana.

Wim van den Heever / Plains zebra (Equus quagga) at sunset, Savuti Marsh, Botswana.

Cheryl-Samantha Owen / Common or plains zebra (Equus quagga burchelli) grazing in bushTarangire National Park, Northern Tanzania.

Theo Allofs / Burchell's Zebra (Equus burchellii) herd in savanna, Masai Mara, Kenya

Richard Du Toit / Burchell's Zebra (Equus burchellii) mother and foal in tall grass, Rietvlei Nature Reserve, South Africa

Ashish & Shanthi Chandola / Plains zebra (Equus quagga) grooming foal, Kruger National Park, South Africa, July.

Denis-Huot / Grant's zebra (Equus burchelli granti) mutual grooming after a bush fire, Masai-Mara Game Reserve, Kenya. October.

Richard Du Toit / Burchell's Zebra (Equus burchellii) stallions fighting, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) stallions fighting, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) mother nuzzling foal, Rietvlei Nature Reserve, South Africa

Anup Shah / Burchell's Zebra (Equus burchellii) and Blue Wildebeest (Connochaetes taurinus) herd crossing river, Mara River, Masai Mara, Kenya

Theo Allofs / Burchell's Zebra (Equus burchellii) pair drinking at waterhole with Oryx (Oryx gazella) in background, NamibRand Nature Reserve, Namibia

Richard Du Toit / Burchell's Zebra (Equus burchellii) reacting to parasitic Bot Fly (Oestridae) trying to lay eggs on it, KwaZulu-Natal, South Africa

Anup Shah / Common or Plains zebra herd crossing the Mara River - wide angle perspective (Equus quagga burchellii). Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / White-backed vultures (Gyps africanus) feeding on the carcass of a Common or Plains zebra. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Common or plains zebra (Equus quagga burchelli) and Eastern white-bearded wildebeest (Connochaetes taurinus) mixed herd running. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera...

Mike Wilkes / Burchell's zebra (Equus quagga burchellii) walking in single file, Ngorongoro Crater,Tanzania

Denis-Huot,Denis-Huot / Grant's zebra (Equus burchelli boehmi) herd with large cloud above, Amboseli National Park, Kenya

Denis-Huot,Denis-Huot / Grant's zebra (Equus burchelli boehmi) in a migration herd of wildebeest (Connochaetes taurinus) Masai-Mara Game Reserve, Kenya

Denis-Huot / Grant's zebra (Equus burchelli boehmi) in a migration herd of wildebeest (Connochaetes taurinus) Masai-Mara Game Reserve, Kenya

Richard Du Toit / Burchell's Zebra (Equus burchellii) pair nuzzling, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) yawning, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Cattle Egret (Bubulcus ibis) on Burchell's Zebra (Equus burchellii), Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) males fighting, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) pair, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) males fighting, Rietvlei Nature Reserve, Gauteng, South Africa

Winfried Wisniewski / Burchell's Zebra (Equus burchellii), Masai Mara, Kenya

Winfried Wisniewski / Burchell's Zebra (Equus burchellii), Masai Mara, Kenya

Neil Aldridge / Common Zebra (Equus quagga) head detail portrait, Kruger National Park, South Africa

Anup Shah / Common or Plains zebra (Equus quagga burchellii) lying dead on the savanna grassland, Masai Mara National Reserve, Kenya, March

Anup Shah / Common or Plains zebra (Equus quagga burchellii) Masai Mara National Reserve, Kenya, September

Charlie Summers / Plains Zebra (Equus quagga) in a dominance fight with dust flying, Lake Magadi, Serengeti, Tanzania.

Sharon Heald / Common zebra (Equus quagga) foal in dusty sunset, Etosha National Park, Namibia Photo by Sharon Heald

Andy Rouse / Groups of Burchell's Zebra (Equus quagga) in grassland seen from balloon. Masai Mara, Kenya, Africa. (non-ex).

Andy Rouse / Burchell's Zebra (Equus quagga) foal hiding under its mother's tail. Masai Mara, Kenya.

Andy Rouse / Burchell's Zebra (Equus quagga) mother with newborn foal. Masai Mara, Kenya.

Andy Rouse / Two Common Zebra (Equus quagga) fighting. Masai Mara, Kenya.

Andy Rouse / Burchell's Zebra (Equus quagga) mother with new born foal. Masai Mara, Kenya.

Ole Jorgen Liodden / Plains Zebra (Equus quagga / quagga) in heavy rain. Masai Mara, Kenya, September.

Ole Jorgen Liodden / Plains Zebra (Equus quagga / quagga) in dusty sunset. Masai Mara, Kenya.

Mary McDonald / Common Zebra (Equus quagga) stallions fighting. Naabi Plains, Serengeti National Park, Tanzania.

Mary McDonald / Common Zebra (Equus quagga) stallions fighting. Naabi Plains, Serengeti National Park, Tanzania.

Tony Heald / Zebra (Equus quagga) foal running through Devil's Thorn flowers (Tribulus terrestris). Etosha National Park, Namibia, January.

Tony Heald / Zebra (Equus quagga) foal peering over its mother's striped back. Monochrome. Etosha National Park, Namibia, January.

Anup Shah / Common / Plains Zebra (Equus quagga burchellii) herd drinking from the Mara River - wide angle underbelly perspective, Masai Mara National Reserve, Kenya. September

Anup Shah / Eastern White-bearded Wildebeest herd (Connochaetes taurinus) and Common / Plains zebra (Equus quagga burchellii) running away from the Mara River after crossing - wide angle perspective. Masai Mara N...

Anup Shah / Common / Plains Zebra (Equus quagga burchellii) adult leaping as herd runs away from the Mara River - wide angle perspective, Masai Mara National Reserve, Kenya. September

Anup Shah / Common / Plains Zebra (Equus quagga burchellii) herd running away from the Mara River - wide angle perspective, Masai Mara National Reserve, Kenya. September 2009.

Anup Shah / Common / Plains Zebra (Equus quagga burchellii) close up view of under belly - wide angle perspective. Masai Mara National Reserve, Kenya. August

Richard Du Toit / Burchell's Zebra (Equus burchellii) males fighting, Etosha National Park, Namibia

Richard Du Toit / Burchell's Zebra (Equus burchellii) flehming, Kwazulu Natal, South Africa

Richard Du Toit / Burchell's Zebra (Equus burchellii) mother and foal, Kwazulu Natal, South Africa

Anup Shah / Common or Plains zebra (Equus quagga burchellii)crossing the Mara River. Masai Mara National Reserve, Kenya, September 2009

Charlie Summers / Burchell's Zebra (Equus quagga burchellii) herd walking towards waterhole in the late afternoon, kicking up dust as they come. Etosha National Park, Namibia, Southern Africa

Staffan Widstrand / Plains / Common Zebra (Equus quagga / burchelli), galloping through trees, silhouetted at dusk, Serengeti NP, Tanzania, East Africa, January

Anup Shah / Common / Plains zebra (Equus quagga burchellii) foal walking alongside its mother, Masai Mara National Reserve, Kenya. March.

Ann & Steve Toon / Burchell's zebra (Equus quagga) head portrait of adult with foal, Etosha national park, Namibia

Richard Du Toit / Aerial view of herd of Common zebra (Equus quagga) Makgadikgadi salt pans, Botswana

Anup Shah / Lilac-breasted roller (Coracias caudata) perched on the back of a Common zebra (Equus quagga). Masai Mara National Reserve, Kenya. December

David Noton / Common zebra (Equus quagga) in the bush, Kruger National Park, South Africa

Philip Dalton / Common zebra (Equus quagga) swimming across the Mara River on migration, Masai Mara GR, Kenya

Philip Dalton / Common Zebra (Equus burchellii) swimming across Mara river during migration, Masai Mara GR, Kenya

Richard Du Toit / Burchell's Zebra (Equus burchellii) males sparring, Itala Game Reserve, South Africa

Andy Rouse / Common / Burchell's zebra (Equus quagga) running, kicking up dust, Masai Mara, Kenya

Edwin Giesbers / Common zebra (Equus quagga) close-up showing stripes, Tanzania

Edwin Giesbers / Common zebra (Equus quagga) silhouetted with light from behind, Tanzania

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) herd at waterhole, Serengeti

Anup Shah / Common zebra {Zebra burchelli} herd massed together on migration, Masai Mara GR, Kenya

Tony Heald / Herd of Common zebra {Equus quagga} drinking at waterhole at night, Okaukuejo, Etosha NP, Namibia, January

Suzi Eszterhas / Burchell's Zebra (Equus burchellii) stallions sparring, Masai Mara, Kenya

Suzi Eszterhas / Burchell's Zebra (Equus burchellii) portrait, Masai Mara, Kenya

Anup Shah / Family of Common zebra {Equus quagga} senior mare in front, stallion at rear, pass through throng of Wildebeest at start of migration, Moru, Serengeti NP, Tanzania

Mitsuaki Iwago / African Lion (Panthera leo) female attacking Burchell's Zebra (Equus burchellii), Serengeti National Park, Tanzania

Richard Du Toit / Burchell's Zebra (Equus burchellii) herd crossing pan during summer dry season, Makgadikgadi Salt Pans, Botswana

Richard Du Toit / Burchell's Zebra (Equus burchellii) and Carmine Bee-eater (Merops nubicus) as passenger, Savuti, Chobe National Park, Botswana

Richard Du Toit / Burchell's Zebra (Equus burchellii) close-up of face of braying animal, Hluhluwe-umfolozi Game Reserve, South Africa