The male mandrill (Mandrillus sphinx) or man-ape of equatorial West Africa has an average head
and body length of 61-76 cm (24-30 in) and a tail length of 5.2-7.6 cm (2-3 in). Adult males
weigh an average of 25 kg (55 lb), although specimens weighting up to 54 kg (119 lb) and
measuring 50.8 cm (20 in) to the shoulder have been known. The mandrill is also one of the most
colourful mammals, recognized by its naked vivid-blue rump, red-striped face and yellow beard.