Macaca nemestrina, commonly known as the pig-tailed macaque, is a species of primate found in Southeast Asia. They inhabit tropical forests and are known for their distinctive pig-like tails. These macaques are social animals, often living in groups that can range from a few individuals to over a hundred. The diet of Macaca nemestrina primarily consists of fruits, seeds, and insects, making them omnivorous. They are also known for their intelligence and adaptability, which allows them to thrive in various environments, including areas close to human settlements. Their conservation status is of concern due to habitat loss and hunting.