The Hangover Part II an exotic location. That's all I know". In January 2010, Phillips dismissed rumors that Zac Efron would join the cast of "The Hangover 2", though Ed Helms stated that Efron would be a welcomed addition, commenting, "I love that guy. He's actually really funny". In March 2010, Phillips denied reports that the film would take place in Mexico or Thailand stating, "I don't know. There's a lot of rumors. There was rumor also that it was going to Mexico or something and neither are true". Also by March, Galifianakis, Helms, Bradley Cooper, and Justin Bartha completed negotiations and signed deals
Crystal the Monkey in July 2011. She portrayed a drug dealing monkey in the 2011 film "The Hangover Part II". Director Todd Phillips raised concerns after he joked that Crystal had become addicted to cigarettes after learning to smoke them for the film. Philips later explained that Crystal never actually held a lit cigarette on the film's set, the smoke was added digitally in post-production, and the cigarette was ceramic. Still PETA protested Crystal's appearance in the film because the studio used exotic animals for entertainment purposes and because the film does not carry the American Humane Association's disclaimer that "no animals were