Squirrel monkeys are New World monkeys of the genus Saimiri.Squirrel monkeys live in the tropical forests of Central and South America in the canopy layer. The Squirrel monkey’s fur is short and close, colored black at the shoulders and yellowish orange on its back and extremities. Their throat and the ears are white and their mouths are black. The upper part of their head is hairy.Squirrel monkeys grow from 25 to 35 cm long, plus a 35 to 42 cm tail. Male squirrel monkeys weigh 750 to 1100 g. Females weigh 500 to 750 g. They are equipped with a long and hairy tail, flat nail, curved small hallux and, pointed claws.