Punch Pooch

• 1962 cartoon
• Plot: At the carnival, Champ is persuaded to enter a boxing attraction with "The Australian Bounder," a fighting kangaroo. The winner receives $500.00 if he can stay four rounds with the animal. Doc and Champ are pleased to accept but the kangaroo and its manager don't exactly fight fair. To help Champ win, Doc comes up with a variety of schemes, such as convincing the kangaroo that Champ is a mother with child, then that Champ has the measles, and, in the final round, by putting Champ on a unicycle so he can outrun his foe.
• IMDb link