A monkey is a primate that is also a member of the superfamily
Ceboidea (New World monkeys) or Cercopithecoidea (Old World monkeys). Monkeys
are long-tailed, medium-bodied, and either arboreal or terrestrial quadrupeds.
New World monkeys include the capuchins, spider monkeys, howler monkeys,
and marmosets. Old World monkeys include the macaques, baboons, and langur