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Rhesus macaque
The rhesus macaque (''Macaca mulatta''), is one of the best-known species of Old World monkeys. It is listed as Least Concern in the IUCN Red List of Threatened Species in view of its wide distribution, presumed large population, and its tolerance of a broad range of habitats. Native to South, Central and Southeast Asia, troops of ''Macaca mulatta'' inhabit a great variety of habitats from grasslands to arid and forested areas, but also close to human settlements.
== Characteristics ==
The rhesus macaque is brown or grey in color and has a pink face, which is bereft of fur. Its tail is of medium length and averages between . Adult males measure approximately on average and weigh about . Females are smaller, averaging in length and in weight. Rhesus macaques have on average 50 vertebrae. Their intermembral index (ratio of arm length to leg length) is 89%. They have dorsal scapulae and a wide rib cage.
The rhesus macaque has 32 teeth with a dental formula of 2.1.2.3/2.1.2.3 and bilophodont molars. The upper molars have four cusps: paracone, metacone, protocone and hypocone. The lower molars also have four cusps: metaconid, protoconid, hypoconid and entoconid.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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