Tom and Jerry is a series of animated theatrical shorts created by William Hanna and Joseph Barbera for Metro-Goldwyn-Mayer that centered on a never-ending rivalry between a housecat (Tom) and a mouse (Jerry) whose chases and battles often involved comic violence. Hanna and Barbera ultimately wrote and directed one hundred and fourteen Tom and Jerry cartoons at the MGM cartoon studio in Hollywood, California between 1940 and 1957, when the animation unit was closed. The original series is notable for having won the Academy Awards for Best Short Subject (Cartoons) seven times, tying it with Walt Disney's Silly Symphonies as the theatrical animated series with the most Oscars.