Hiss and Make Up

The book on the small table in the first minute has the title SEX STUFF on the spine.

The dog and cat are continually fighting each other. At one point the cat, using a dog paw stamp, puts dog prints on the carpet, furniture, and walls, then alerts the human. Then, as the cat and dog continue to get at each other, the prints disappear. But toward the end of the cartoon, the prints suddenly reappear on the walls next to the door. Then, those too, disappear again.

Featured in Futurama: Where No Fan Has Gone Before (2002)