Ape Portrait

A group of apes may be referred to as a troop or a shrewdness.
Biology
The gibbon family, Hylobatidae, is composed of fifteen medium-sized species. Their major distinction is their long arms, which they use to brachiate through the trees. As an evolutionary adaptation to this arboreal lifestyle, their wrists are ball and socket joints. The largest of the gibbons, the Siamang, weighs up to 14 kg (31 lb). In comparison, the smallest great ape is the Common Chimpanzee at a modest 40 to 65 kg (88 to 143 lb).