Southern pig-tailed macaque Southern pig-tailed macaque The southern pig-tailed macaque ("Macaca nemestrina"), also known as the Sundaland pigtail macaque and Sunda pig-tailed macaque, is a medium-sized macaque that lives in southern Thailand, Malaysia, and Indonesia. It is known locally as the beruk. The species epithet, "nemestrina", is an adjective (derived from Latin "Nemestrinus", the god of groves) modified to agree in gender with the feminine generic name. "Macaca nemestrina" formerly included the northern pig-tailed, Pagai Island, and Siberut macaques as subspecies. All four are now considered separate species. "Macaca nemestrina" can reach a weight of 5–15 kg in large males. These monkeys are
Japanese macaque to 28 years and females up to 32 years. Japanese macaques live in matrilineal societies, and females stay in their natal groups for life, while males move out before they are sexually mature. Macaque groups tend to contain a number of adults of both sexes. In addition, a Japanese macaque troop contains several matrilines. These matrilines may exist in a dominance hierarchy with all members of a specific group ranking over members of a lower-ranking group. Temporary all-male groups also exist, composed of those that have recently left their natal groups and are about to transfer to another group. However,