Does it work?
Kirk, whom some of you may know from chat, once had a siamese kitten. One day in chat he suddenly said, "Yay, I have a self-feeding cat." It turns out he put the cat's food bowl on the floor, and the food bag on a table above the bowl. The cat gnawed a hole in the bag and, whenever he got hungry, he would hop on the table and slap the bag to make food fall out the hole.
Give a new meaning to cat chow...