Hoolock Gibbon

This small (weighs a little over 6 kg) ape was once widespread through eastern India . They live in small monogamous family groups, consisting of a mated pair with their offspring. There are deep social bonds between group members and the group defends its territory with loud songs. Adult males are always black, with prominent white eyebrows, while adult females are gold or buff or brownish buff. They travel through trees extremely fast, descending only when forced to. Thus, clearing of the evergreen forests they live in makes them vulnerable to hunting and predation.