This meme is so old it could vote. For Regan.

Or instead of bread, two cats.

The rotation is partly actively maintained by muscular action from the cat. This is a chemical process that requires fuel and releases heat. This also eventually tires the cat.

Given the relatively low mass involved this really doesn’t have much potential for large scale generation. An Ox mill would be more practical in most cases.

Check out Cato on PSN. Its a puzzle platformer based on this concept!