rhesus monkey(redirected from Rhesus macaques)
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rhesus monkey:see macaquemacaque
, name for Old World monkeys of the genus Macaca, related to mangabeys, mandrills, and baboons. All but one of the 19 species are found in Asia from Afghanistan to Japan, the Philippines, and Borneo.
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(Macaca mulatta), also rhesus or rhesus macaque, a catarrhine monkey with a body length of about 60 cm and a tail length of 25–30 cm. The compact body is covered with dull greenish yellow hair. The face, ears, and hands are pink, and the ischial callosities are red. Rhesus monkeys live in troops in the jungles of southeastern Asia, including the Hindustan Peninsula. They are found in the Himalayas from Nepal to northern Burma. The monkeys are arboreal, but they frequently descend to the ground. They swim and dive well. Rhesus monkeys are used as laboratory animals for medical and biological research.