Mr. Wuffles ignores all his cat toys but one, which turns out to be a spaceship piloted by small green aliens, and when Mr. Wuffles plays a little too roughly with the toy ship, the aliens must venture into the cat's territory to make emergency repairs. By the three-time Caldecott Medal-winning author/illustrator of Tuesday (1992), The Three Pigs (2002) and Flotsam (2007).