The lion-tailed macaque (Macaca silenus) is an Old World monkey. It lives in the Western Ghats mountains of India.
The hair of the Lion-tailed macaque is dark-brown or black. There is a black tuft at the end of the tail, similar to a lion's tail. With a head-to-tail length of 45 to 60 cm and a weight of 3 to 10 kg, it is one of the smaller macaques.
It is a diurnal animal, active during the day. It lives in the rainforest dweller. It is a good climber and spends most of its life in the upper branches. Unlike other macaques, it avoids humans.
The lion-tailed macaque is one of the rarest primates. Many zoos take part in breeding programs to help this species survive. 368 of these Macaque are reported to live in zoos.