The Sunda pig-tailed macaque spends more time on the forest floor and in the open than other macaques, where it forages for leaves, buds, shoots, insects and small animals (5). It has cheek pouches to carry food while it forages, and often returns to the safety of the trees to feed (5). This macaque is a social primate and lives in group sizes of 5 – 40 (average 15 – 22) individuals (2), though the group splits into smaller units to forage. In the group males and females live together. Females remain in their natal group, though males will disperse shortly before they reach sexual maturity (5).