<Tr> <Th> Residence </Th> <Td> Los Angeles County, California </Td> </Tr> <Tr> <Th> Height </Th> <Td> 1 ft 7 in (48 cm) </Td> </Tr> <P> Crystal (born May 6, 1994) is a female capuchin monkey and animal actress, acquired and trained by Birds & Animals Unlimited, Hollywood's largest supplier of animals . Her acting career began as a baby monkey in the 1997 film George of the Jungle . More recently, she portrayed the irritating monkey Dexter in the Night at the Museum franchise, and a drug - dealing monkey in The Hangover Part II . In 2012, she played Dr. Rizzo on the sitcom Animal Practice . </P> <P> In 1996, Birds & Animals Unlimited, the largest furnisher of animals to Hollywood, sent one of its trainers to purchase a capuchin monkey in Florida . Birds & Animals prefers to begin training younger monkeys, optimally those close to one year old . Audacious two - and - half - year - old Crystal, whose canine teeth had begun showing, was offered . The trainer ultimately decided to buy both Crystal and two younger capuchin monkeys . Three employees received the three monkeys . Crystal was given to Tom Gunderson, an employee who had only been with the company for a few years and had been primarily working at Universal Studios Florida's Animal Actors stage show . Gunderson had let the other two employees select their monkeys first and was left with the oldest, Crystal . He named her Crystal, a namesake to a country music singer Crystal Gayle . New York magazine's Benjamin Wallace wrote, "It was like she was born to perform ." </P>

Name of monkey from night at the museum