Leif Tilden (born March 20, 1964) is an American actor who played Robbie Sinclair in the sitcom Dinosaurs, and gorillas in various films including George of the Jungle, Ace Ventura: When Nature Calls and Buddy.

He also wrote and directed the 2001 short bigLove and co-directed the 2001 Dogme film Reunion. He was a witness in the O. J. Simpson trial.

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