Habitat Forested areas. Males weigh 55 pounds, females weigh 25 pounds. This large stub-tailed relative of the baboons has a coat of dark brown to olive gray. The adult male has a bright red nose and bridge flanked by grooved paranasal swellings of intense electric blue. His genitalia and surrounding skin are likewise vividly colored.
Males feed primarily on the ground, while females and young climb to the canopy to feed.
Reproduction Maturity in females is reached about three or four years of age, two years later in males. The menstrual cycle is 33 days. A single offspring is born between December and April. Predators Leopards and man.