Rhesus Macaques (Macaca mulatta)

Rhesus macaques are an Old World monkey species native to Afghanistan, India, Thailand and Southern China. Rhesus monkeys are brown or grey in color and have pink faces which are typically bereft of fur. This species is one of the best known monkey species and is commonly used as a primate model in neuroscience.

Our rhesus monkey subjects live on the island of Cayo Santiago in Puerto Rico, which is run and maintained by the Caribbean Primate Research Center.