Black-capped-Squirrel-Monkey

Black-Capped Squirrel Monkey And Baby leaping

The black-capped squirrel monkey (Saimiri boliviensis) is a South American squirrel monkey, found in Bolivia, Brazil and Peru. The squirrel monkeys are the New World monkeys of the genus Saimiri. Squirrel monkeys grow to 25 to 35 cm, plus a 35 to 42 cm tail. Male squirrel monkeys weigh 750 to 1100 g. Females weigh 500 to 750 g. Remarkably, the brain mass to body mass ratio for squirrel monkeys is 1:17, which gives them the largest brain, proportionately, of all the primates. Humans have a 1:35 ratio. (Wiki.)