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
Tibetan macaque in males but is a more vivid, reddish-pink in females. The infants have silver-and-black fur that changes to its adult color at the age of two. The Tibetan macaque lives in mixed sex groups. In their complex social system, females remain for life in their natal group, but males disperse shortly after their adolescence (at about 8 years old). Macaque societies are hierarchical, with higher-ranking males getting better access to the resources, namely food and sexually-receptive females. Alpha males dominate the group, being those that are typically large, strong and newly mature. As they age, males tend to gradually lose