The bongo (Tragelaphus eurycerus) is a herbivorous, mostly nocturnal forest ungulate.
Bongos are characterised by a striking reddish-brown coat, black and white markings, white-yellow stripes and long slightly spiralled horns.
They are the only tragelaphid in which both sexes have horns.
They have a complex social interaction and are found in African dense forest mosaics. Native to Africa, they are the third-largest antelope in the world.
The western or lowland bongo, T. e. eurycerus, faces an ongoing population decline.
The eastern or mountain bongo, T. e. isaaci, of Kenya, has a coat even more vibrant than that of T. e. eurycerus.
The mountain bongo is only found in the wild in a few mountain regions of central Kenya.
This bongo is classified by the IUCN Antelope Specialist Group as Critically Endangered, with fewer individuals in the wild than in captivity (where it breeds readily).