Stump-tailed macaques have long, thick, dark brown fur that covers their body, except for face and their short almost invisible tail. Infants are born white and darken as they mature. As they age, their bright pink or red faces darken to brown or nearly black and lose most of their hair. ~8 years – Rhesus macaque males reach full body size. Breeding – Rhesus macaques are seasonal breeders, with bi rths in the wild coinciding with the end of the rainy season, or during the period of highest food abundance
Despite their rather threatening appearance, Pigtail Macaques are actually very friendly Pigtail Macaques live in Northeastern India, Burma, Thailand, Sumatra, Borneo and the Malayan Peninsula. They are cm long on average, and weigh 4,8 – 13,5 kilograms, while their build is stocky and they are in fact very strong animals. Unprotected receptive anal intercourse is a well-recognized risk factor for infection with human immunodeficiency virus-type 1 (HIV-1). Isolated human case reports have implicated HIV-1 transmission by oral-genital exposure. Adult macaques exposed nontraumatically to cell-free simian immunodeficiency virus (SIV) through the oral route became infected and developed acquired .
The organization of primary motor cortex (M1) of adult macaque monkeys was examined years after therapeutic amputation of part of a limb or digits. For each case, a large number of sites in M1 were electrically stimulated with a penetrating microelectrode, and the evoked movements and levels of current needed to evoke the movements were recorded. The Rhesus macaque is a monkey of the Old World. They are either pale brown or gray, usually with a pink face. Their tails are quite long, they have a rib cage that is wider than average, with dorsal scapulae, and they have thirty-two teeth. They are charismatic monkeys and like to have fun and can be cheeky.
Amongst all non-human primates, macaques have the widest natural distribution ranging from Japan to Afghanistan. Macaques typically live in large groups of up to 50 individuals with a very intracate social structure and hierarchy. On this site you will find more information about keeping macaques in captivity.