Capuchin Monkey's are New World monkeys of the subfamily Cebinae. Prior to 2011, the subfamily contained only a single genus, Cebus. However, in 2011 it was proposed to split the capuchin monkeys between the gracile capuchins in the genus Cebus and the robust capuchins in the genus Sapajus. The range of capuchin monkeys includes Central America and South America as far south as northern Argentina. There are two characters in Night of the Museum which are Capuchin Monkey's, those being, Dexter and Able the Space Monkey.
Capuchins are black, brown, buff or whitish, but their exact color and pattern depends on the species involved. They reach a length of 30 to 56 cm (12–22 in), with tails that are just as long as the body. Capuchins are considered the most intelligent New World monkeys and are often used in laboratories and like most New World monkeys, capuchins are diurnal and arboreal.