Celebes Crested Macaque

The Celebes crested macaque (Macaca nigra), also known as the crested black macaque, Sulawesi crested macaque, or the black ape, is an Old World monkey that lives in the tropical regions of north Sulawesi. Notable features include a long muzzle with high cheeks, a long hair tuft, or crest, at the top of the head and striking reddish-brown eyes, unusual for a primate. Uniquely among macaques, males and young females bear a heart-shaped skin pad on the rump.Although possessing a markedly ape-like appearance, it has an almost non-existent, non-visible, vestigial tail stub of only approximately 2 cm (0.8 in). (Wikipedia, general species account).

Locally known as yaki, wolai, or bolai, its skin and hairless face is, with the exception of some white hair in the shoulder range, entirely jet black. Macaca nigra has around eight subpopulations, with a introduced population on the island of Bacan. The species is a diurnal rain forest dweller. This macaque is primarily terrestrial, spending more than 60% of its day on the ground foraging for food and socialising, while sleeping and searching for food in the trees. (Wikipedia, general species account).