Let’s introduce you to three more pets often held by Boca da Valeria children. This comfortable little guy is a capuchin monkey. There are dozens of species of capuchin monkeys living in a range from Central America to northern Argentina. Interestingly, the two major subfamilies reside on opposite sides of the Amazon River. The capuchin monkey is considered the smartest of all New World Monkeys. Other common primates in the rainforest are howler, tamarin, spider and squirrel monkeys.