Fourteen different cats portrayed Rhubarb at different points in the film. Each cat was trained to do a different trick. Three of the most identical cats appeared in the courtroom scene where Polly Sickles has to choose which one is the real Rhubarb. At the theatrical opening of this film, kids were handed (for free) an "autographed" picture of Rhubarb. The signature on the photo was a paw print.