The lion-tailed macaque[1] (Macaca silenus), also known as the wanderoo, is an Old World monkey native to the Western Ghats of South India.
- The body is covered with black fur. The tail is long, thin, and bare, with a tuft of puffy black hairs at the tip.
- Both males and females have a lion-like mane of grayish fur that encircles the face. The face itself is bald and black.
- Macaca silenus has two incisors, one canine, three premolars, and two molars in each mouth quadrant.
- Lion-tailed macaques have cheek pouches that open next to the lower teeth and extend down the sides of the neck.
- The young are born with a soft, black coat replaced by an adult coat after two months.
