Genus Macaca refers to a group of primates commonly known as macaques. These are medium-sized monkeys native to Asia and Africa, and are known for their cheek pouches, long tails, and protruding muzzles. There are several species within this genus, including the rhesus macaque, long-tailed macaque, and Japanese macaque. Synonyms for Genus Macaca include Asiatic macaque, Old World monkey, and simply macaque. These primates are highly intelligent and adaptable, surviving in a range of habitats from forests to cities. They are also often used in medical and scientific research due to their close genetic similarities to humans and their ability to learn complex tasks.