Large primate with no tail. The males are generally larger than the females. They spend a lot of their time on the ground but can move up into the trees when necessary. They are active during the day.
Maternal care gradually diminishes as the young begin to gain Independence. The males participate in the education of the juveniles and it is not unusual to see them with their young carried aloft. These macaques are very important for the ecosystems they live in, as they are great seed-spreaders. The main threat for this species is the loss of habitat due to the intensive extraction of wood. Degradation of the habitat as a result of grazing is very likely to affect the long term existence of this species.