“Rock Dog,” an ungainly animated fable about a Tibetan mastiff who longs to be a guitar-shredding rocker, never really comes to heel. Intermittently diverting as it may be, the movie bears all ...

The animated kiddie movie "Rock Dog" should be as frisky as a puppy, but it's as lethargic as an old St. Bernard after a big meal. In a village in the Himalayas, a Tibetan mastiff named Khampa ...