Anup Shah / Spotted hyena (Crocuta crocuta) approaching with curiosity. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Spotted hyena (Crocuta crocuta) aged about 2 years watching with curiosity with the rest of the clan in the background. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Spotted hyena (Crocuta crocuta) preparing to carry a pup aged 2-3 months. Masai Mara National Reserve, Kenya, July

Denis-Huot,Denis-Huot / Spotted hyena (Crocuta crocuta) with Lesser flamingo (Phoenicopterus minor) it has just caught, Lake Nakuru, Kenya

Denis-Huot / Spotted hyena (Crocuta crocuta) hunting Lesser flamingoes (Phoenicopterus minor) Lake Nakuru, Kenya

Denis-Huot / Spotted hyena (Crocuta crocuta) baby at den, Masai-Mara Game Reserve, Kenya

Denis-Huot / Spotted hyena (Crocuta crocuta) killing a newborn Grant's gazelle (Nanger granti) Masai-Mara game reserve, Kenya

Christophe Courteau / Spotted Hyaena (Crocuta crocuta) at night, South Africa

Anup Shah / Spotted hyaena (Crocuta crocuta) pup aged 6-9 months portrait, Masai Mara National Reserve, Kenya, August

Ole Jorgen Liodden / Three Spotted Hyena (Crocuta crocuta) cubs. Masai Mara, Kenya, December.

Martin Dohrn / Three hyenas (Crocuta crocuta) approaching a resting lion (Panthera leo) at night. Topi Plain, Masai Mara, Kenya. Image taken using an infared camera with no artificial visible light, on location for...

Martin Dohrn / Group of hyena (Crocuta crocuta) playing in deep rain puddle at night. Topi Plain, Masai Mara, Kenya. Image taken using "starlight camera" with no artificial light, on location for National Geographi...