Nice
It'd be nice if there were other animals that you chould choose to fire. I'd love to hurtle a cow into the air. You should have birds floppin around that could get killed by the animal colliding with it. And what about landscaping? You could have trees that the cat could smash into. A lake could give the cat an extra boost (being that kitties sure seem to get alot of energy when they touch water). Oooh, ooh, what about low flying planes?? Oh, this is a great game.