Flyball was the only cat on the Moon. He had gone there with his friend Colonel Fred Stone - and now a new rocket ship was being built to take Colonel Stone - and of course Flyball - to the planet Venus.Flyball's mind was busy. What would a Space Cat find on Venus? Mice? There had been none on the Moon. Birds, perhaps?The things he did find were a great surprise even to a Space Cat.The story is told with the same delightful humor as the first book about Space Cat, and is again illustrated by Paul Galdone, who first pictured Flyball's jaunty personality.