MGM Animation/Visual Arts was an American animation studio established in 1962 by animation director/producer Chuck Jones, producer Les Goldman and executive Walter Bien as Sib Tower 12 Productions. Its productions include the last series of Tom and Jerry theatrical shorts, the TV specials Horton Hears a Who! and How the Grinch Stole Christmas!, and the feature film The Phantom Tollbooth, all released by Metro-Goldwyn-Mayer.