Like most other monkeys, macaques go about in large troops, each headed by an old male.
GUENON (from the French, = one who grimaces, hence an ape), the name applied by naturalists to the monkeys of the African genus Cercopithecus, the Ethiopian representative of the Asiatic macaques, from which they differ by the absence of a posterior heel to the last molar in the lower jaw.
macaques used in a drug inhalation test were mistreated by technicians.
Crab-eating macaques from Asia are by far the most heavily traded monkeys, followed by rhesus and squirrel monkeys.
One SHIV used in monkeys and mutated into a pathogen so powerful that it kills rhesus macaques in weeks  .