a large monkey that lives in West Africa and that has a red and blue face. Diurnal monkey (family Cercopithecidae, usually genus Mandrillus) of equatorial African rainforests, known for its striking colouring. The stout-bodied, primarily terrestrial mandrill has a short tail, prominent brow ridges, and small, close-set, sunken eyes. The ribbed bare skin on the adult male's cheeks is bright blue, with scarlet on the nose; the buttock pads are pink to crimson, shading to bluish; and the beard and neck are yellow. The adult male is about 3 ft (90 cm) long and weighs about 45 lb (20 kg); the female is duller and smaller. Mandrills eat fruit, roots, insects, and small reptiles and amphibians
{i} large baboon native to western Africa (male of the species has bright blue, purple and red facial markings)
The adult male has, on the sides of the nose, large, naked, grooved swellings, conspicuously striped with blue and red