Looney Tunes - The Case of the Stuttering Pig (1937, animated short)

The Case of the Stuttering Pig is a 1937 Warner Bros. Looney Tunes animated cartoon directed by Frank Tashlin. The short was released on October 30, 1937, and stars Porky Pig and Petunia Pig.
The title is a parody of The Case of the Stuttering Bishop, a Perry Mason mystery that Warner Bros. had filmed earlier that year. This is the only cartoon where Petunia Pig appears as Porky's sister.