Oriol Alamany / Mountain nyala (Tragelaphus buxtoni) male, Gaysay grasslands, Bale Mountains National Park, Oromia, Ethiopia, October.

Oriol Alamany / Mountain nyala (Tragelaphus buxtoni) female running at Gaysay grasslands, Bale Mountains National Park, Oromia, Ethiopia, October.

Oriol Alamany / Mountain nyala (Tragelaphus buxtoni) male at Gaysay grasslands, Bale Mountains National Park, Oromia, Ethiopia.

Oriol Alamany / Mountain nyala (Tragelaphus buxtoni) females group at Gaysay grasslands, Bale Mountains National Park, Oromia, Ethiopia.

Ann & Steve Toon / Nyala (Tragelaphus angasii) female at water at night, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Nyala (Tragelaphus angasii) male at water at night, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Nyala (Tragelaphus angasii) male at water, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Staffan Widstrand / Nyala (Tragelaphus angasii), Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Staffan Widstrand / Nyala (Tragelaphus angasii), Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Mike Potts / African elephant (Loxodonta africana) and Nyala (Tragelaphus angasii) at waterhole. Tembe Elephant Park. KwaZulu-Natal. South Africa.

Sylvain Cordier / Mountain nyala (Tragelaphus buxtoni) female and calf, Bale, Ethiopia. Endemic.

Jen Guyton / Nyala calf (Tragelaphus angasii) in Gorongosa National Park, Mozambique.

Ann & Steve Toon / Nyala (Tragelaphus angasii) young male, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Ann & Steve Toon / RF - Nile crocodile (Crocodylus niloticus) watching male nyala (Tragelaphus angasii) grazing near water edge, Zimanga private game reserve, KwaZulu-Natal, South Africa, September 2016 (This image may...

Wild Shots Outreach / Wild Shots Outreach students from Lepono Secondary School, Limpopo photographing Nyala (Tragelaphus angasii) from a hide on their first game drive with Wild Shots Outreach founder and director, Mike K...

Ernie Janes / African rock python (Python sebae sebae) constricting a Nyala (Tragelaphus angasii) calf, Natal, South Africa, January.

Ernie Janes / African rock python (Python sebae sebae) constricting a Nyala (Tragelaphus angasii) calf, with tourists on safari in the background, Natal, South Africa, January.

Ernie Janes / Nyala (Tragelaphus angasii) females, Natal. South Africa, January.

Ernie Janes / Nyala (Tragelaphus angasii) male feeding, Natal, South Africa.

Ernie Janes / Nyala (Tragelaphus angasii) male, Natal, South Africa.

Ernie Janes / Nyala (Tragelaphus angasii) male, Natal, South Africa.

Staffan Widstrand / Nyala (Nyala angasii) iMfolozi National Park, South Africa

Staffan Widstrand / Nyala (Nyala angasii) iMfolozi National Park, South Africa

Ann & Steve Toon / Nyala (Tragelaphus angasii), bull ground raking, Mkhuze Game Reserve, KwaZulu-Natal, South Africa, June

Ann & Steve Toon / Nyala (Tragelaphus angasii), female with young drinking, Mkhuze Game Reserve, KwaZulu-Natal, South Africa, May

Ann & Steve Toon / Nyala (Tragelaphus angasii), bull ground-raking, Mkhuze Game Reserve, KwaZulu-Natal, South Africa, May

Ann & Steve Toon / Nyala (Tragelaphus angasii) bulls, Mkhuze Game Reserve, KwaZulu-Natal, South Africa, May

Enrique Lopez-Tapia / Mountain nyalas (Tragelaphus buxtoni) females. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) female. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni), male. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni), male. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni), male. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) male and female, Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) running female. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) running female. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) female urinating, Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) running, female. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) female. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Enrique Lopez-Tapia / Mountain nyala (Tragelaphus buxtoni) running, female. Bale Mountains National Park, Ethiopia. Endemic, endangered species.

Pete Oxford / Nyala (Tragelaphus angasil) on private game ranch. Great Karoo, South Africa

Richard Du Toit / Nyala (Tragelaphus angasi) rams, Kruger National Park, Limpopo Province, South Africa, October.

Wim van den Heever / Male Nyala (Tragelaphus angasii) feeding on leaves, Phinda Private Game Reserve, South Africa.

Wim van den Heever / Male Nyala (Tragelaphus angasii) feeding on leaves, Phinda Private Game Reserve, South Africa.

Will Burrard-Lucas / Female Mountain nyala (Tragelaphus buxtoni), Dinsho lodge, Gasay Grasslands, Ethiopia.

Will Burrard-Lucas / Mountain nyala (Tragelaphus buxtoni) male, Gasay Grasslands, Oromia, Ethiopia.

Will Burrard-Lucas / Mountain nyala (Tragelaphus buxtoni) Gasay Grasslands, Oromia, Ethiopia

Staffan Widstrand / Nyala (Tragelaphus angasi) feeding on bush, iMfolozi National Park, South Africa

Ann & Steve Toon / Nyala (Tragelaphus angasii), bulls lateral presentation display, Mkhuze Game Reserve, South Africa