Bolt (2008)

Bolt, a German Shepherd, has lived his whole life on the set of his action TV show, where he believes he has superpowers. When separated from the studio by accident, he meets Mr. Mittens (actually a female cat) and a hamster named Rhino. Along the way, he learns that he doesn't have superpowers and that the show is not realistic. Voices by: John Travolta, Woody Harrelson, Bruce Greenwood, Thomas Haden Church.