Wags to Riches (1949)

Continuity mistake: When the millionaire is addressing Spike and Droopy at the beginning of the cartoon, you can see his briefcase is at the right hand corner of the table. In the next shot, the briefcase is now in front of the millionaire.

Trivia: When Droopy puts a needle into Spike's rear whilst playing "Pin The Tale On The Donkey", Spike lets out "Tom's Scream."