updated 06/03/2011 AT 6:25 PM ET
•originally published 06/03/2011 AT 5:00 PM ET
The biggest comedy of the summer season includes a few familiar faces – and one you might not know is so familiar. Here are five things you might not know about Crystal, the scene-stealing monkey of Hangover 2:
1. In real life, she doesn’t smoke.
Director Todd Phillips jokingly said that after training Crystal to play a chain-smoking drug mule, he had “PETA after me because the monkey’s become addicted to cigarettes.” Phillips later had to clarify that he had been joking. Crystal’s trainer, Thomas Gunderson, worked with his 17-year-old monkey so that she could hold a hollow prop that looked like a cigarette (the smoke effects were added later through CGI). She also learned how to use several different kinds of lighters (that didn’t have real flames).
2. She doesn’t have any other deviant behaviors, either.
“Most monkeys are liars, Crystal is not.” Gunderson says. “She’s not a good liar. She’s very honest.” Other than enjoying bonding time with humans, Crystal isn’t one to mess around. “She takes her work very seriously.”