This species has cheek pouches to carry food in while it forages. The average body mass for an adult male lion-tailed macaque is around 7 kilograms, and for the females it is around 5 kilograms. The pelage has a black color, with the long hairs surrounding the face being gray in color. At the end of the tail there is a small tuft of hair.
The lion-tailed macaque is found in the country of India. This species lives in evergreen and semievergreen broadleaf monsoon forest and sometimes in forests near rivers. It prefers to live in mature forests.