Nice concept, like the cloud-rendering, but it's a bit confusing how part of the butter seems to be "folded over". Also, might work better with an orange or brown cat o something, but those two shades of yellow are so close it almost looks like there's a hole in the bread and that's the cat's back poking through.
Bread always lands butter side down.
Sooo,
Strap a piece of buttered bread on the back of a cat and you have something that will never touch the ground.
Anti-Gravity!