Mandrillus is the
genus of the
mandrill and its close relative the
drill. These two species are closely related to the
baboons, and until recently were lumped together as a single species of baboon. Both
Mandrillus species have long furrows on either side of their elongated snouts. The adult male mandrill's furrows are blue, while the furrows of the drill are black. Both species are
terrestrial, living on the ground of the
rainforests and occasionally
grasslands of
Central Africa.