Humans' cousins are APES, which are primates that belong to the family Hominidae. APES are characterized by their large brains, long arms, and lack of tails. They are found in tropical and subtropical regions of Africa and Asia and are divided into two main groups: the great APES, which include gorillas, chimpanzees, and orangutans, and the lesser APES, which include gibbons and siamangs. APES are highly intelligent and social animals, and they share many traits with humans, such as tool use, language, and complex social behavior.