It is illegal to purchase a monkey as a pet in many places. Most provinces, states, and countries require the proper permits and licenses in order to own a monkey.
In the United States, anyone wishing to keep a monkey as a pet must first obtain a USDA license and be prepared to make a substantial financial commitment in housing and health care for their pet. Additionally, reproductive and transport permits may be required. Additionally, monkey owners should research the species of monkey and the laws for keeping exotic animals in their area of residence.