The tufted capuchin, Sapajus apella, is a social little monkey living in the dry canyons of the Amazon river basin, in South America. This little primate is somewhat famous for its use of stones to break open hard nuts. It also eats a variety of fruits and small animals such as insects and even rats! You can watch a family of tufted capuchins survive and thrive throughout one whole year in the BBC Earth movie, Wild Brazil. Highly recommended viewing!