The Cat in the Hat is a classic Dr. Seuss children’s book first published in 1957. The story follows Sally and her brother on a rainy day when an unexpected visitor—the mischievous Cat in the Hat—arrives and turns an ordinary afternoon into a whirlwind of tricks, chaos and cleanup. Written with simple vocabulary, rhyming text and lively illustrations, the book became a cornerstone of the Beginner Books series and remains a favorite for helping young readers build confidence.