Lion-tailed macaques mate and give birth at any time of the year. When a female is ready to mate, an area under her tail swells and she may initiate calling to attract males. Females usually give birth to one infant at a time which is carried on the abdomen. Life Cycle Infants have soft, black natal coats that are replaced with adult textured coats after about two months. Macaques live in troops comprising of 10-20 members, ruled by a dominant male.
Females usually remain in the same troop with their mothers.
Male macaques, however, tend to leave their natal group at adolescence to live in all-male groups or in small female groups for varying periods of time. Throughout the day, lion-tails forage in trees. At night, they sleep high in the forest canopy, hiding among the branches. They have black, silky fur, long, gray hairs around the face and a small tuft of fur at the end of the tail. These monkeys use 17 different vocal patterns to communicate.