|Geographical Range||Southeast Asia|
|Scientific Name||Trachypithecus francoisi|
Langur social groups contain as many as 12 individuals—many of whom assist in caring for the young in the group. This allows mothers to forage and strengthens social bonds within the group.
Newborn langurs are born with bright red and orange fur that helps the adults in the group keep track of them. After a few months, they begin to develop their less conspicuous adult coloring. Leaves and other plant materials are low in nutrients and difficult to digest. Leaf-eating monkeys such as langurs often spend much of their day resting while their bodies work hard to break down their food.