Ventriloquist Cat

Ventriloquist Cat is an MGM animated film, directed by Hollywood director Tex Avery. The film was released in the US with the movie "The Big Hangover" on May 27, 1950.
Plot.
An alley cat is being chased by a dim-witted bulldog after he is caught writing on the fence "I hate Dogs!" In order to escape, the cat inadvertently jumps into a box full of magician's props and discovers a ventriloquist's device for throwing his voice. With his newly acquired powers of ventriloquism, the cat plays a series of practical jokes on the bulldog. Ultimately, the jokes backfire on the cat after he discards the device.
Remake as "Cat's Meow".
"Ventriloquist Cat" was later remade in CinemaScope as "Cat's Meow", which was released on January 25, 1957. It was one of two Avery MGM cartoons to have been reworked in the widescreen format (the other was the 1949 Droopy cartoon "Wags to Riches", which was redone as "Millionaire Droopy"); as Avery himself was long gone from MGM at the time of these remakes, the new versions were worked on by the Hanna-Barbera unit, despite having Avery's name credited on the title card.
"Cat's Meow" was the final MGM animated film before the MGM cartoon studio shut down in 1957.