The prominent mane occurs in both genders and begins growing in at about 3 months of age. They have a black body and a conspicuous long black tail with a slight tuft of hair on the tip. Face is bare and black in adults, bright pink in the newborn.
Males have projecting canines.
One young born. Gestation 162-186 days. No specific breeding season. Females mature at 5 years, males at 8 years. Females usually outnumber males, usually 1 male but can be as many as 3.