Adult males are black with black and white patches on the cheeks and a crest of erect hairs on top of the head. Adult females are buff or golden, sometimes with black patches.
Offspring are buff-colored when born, turning black after about six months.
Females turn buff again when they mature at 6-7 years. One of the most agile mammals in trees. They also make long limb walks upright holding their arms out for balance. Active during the day. Sleeps in trees at night.