The Cat in the Hat he has made. But the Cat soon returns, riding a machine that picks everything up and cleans the house, delighting the fish and the children. The Cat then leaves just before their mother arrives, and the fish and the children are back where they started at the beginning of the story. As she steps in, the mother asks the children what they did while she was out, but the children are hesitant and do not answer. The story ends with the question, "What would "you" do if your mother asked "you"?" Theodor Geisel, writing as Dr. Seuss, created "The Cat
The Cat in the Hat for the series, including "The Cat in the Hat Comes Back" (1958), "Green Eggs and Ham" (1960), "Hop on Pop" (1963), and "Fox in Socks" (1965). He initially used word lists of limited vocabularies to create these books, as he had with "The Cat in the Hat", but moved away from the lists as he came to believe "that a child could learn any amount of words if fed them slowly and if the books were amply illustrated". Other authors also contributed notable books to the series, including "A Fly Went By" (1958), "Sam and the Firefly" (1958), "Go, Dog.