Fruits, leaves, insects, small mammals and birds. Endangered - an SSP species.
Gibbons mate for life.
Offspring remain in their natal group until they reach maturity at 5-7 years of age. Calls are used due to the fact that they live in very dense foliage. They travel by means of brachiation which is swinging from one branch to the next by their arms. The color is not sexually linked in the white-handed gibbon and it is unknown which if either color is dominate.