Rhesus macaque 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, rhesus macaque have the widest geographic ranges of any nonhuman primate, occupying a great diversity of altitudes and a great variety of habitats, from grasslands to arid and forested areas, but also close to human settlements. The rhesus macaque is brown or grey in
Japanese macaque Japanese macaque is very familiar in Japan, so when Japanese people simply say "saru", they usually have in mind the Japanese macaque. The Japanese macaque is sexually dimorphic. Males weigh on average , while females average . Macaques from colder areas tend to weigh more than ones from warmer areas. Male average height is and female average height is . Their brain size is about . Japanese macaques have short stumps for tails that average in males and in females. The macaque has a pinkish face and posterior. The rest of its body is covered in brown or greyish hair.