Disturbing short

This was a terrible movie. However, one recollection I have had to do with a short film that I BELIEVE was shown before the start of THIS film. Certainly the same era but pretty sure before this film. It was a live-action short having to do with a dog having a nightmare about the cat that he torments. In the nightmare, the cat has become the size of a person, walking on two legs, now going after the DOG and, as I recall all these years later, on a pair of skis. I remember this giving ME nightmares for WEEKS. Anyone have ANY idea what this short film might have been?