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.\n\nName of monkey from night at the museum? Let's have some stream of consciousness first.
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The relevant information to answer the above question is: 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. So, the answer is Dexter.
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