The Cat in the Hat Knows a Lot About That! has 40 half-hour episodes. PBS Kids renewed it for a second season of 20 episodes which premiered on September 10, 2012. A 20 episode third season is currently in development. Each episode features The Cat in the Hat (voiced by Martin Short), who leads neighbours Nick and Sally, the Fish, and Thing One and Thing Two on a variety of adventures in his "Thinga-ma-jigger", a Seussian contraption that can sprout wings, pontoons, booster rockets, change size, and do just about anything else necessary to further the adventure. The adventures are prompted by a question posed by either Nick or Sally
The Cat in the Hat Comes Back the bath tub. The Cat offers to help, but his preliminary attempts to remove the pink spot fail as he only transfers the mess to a succession of other objects: their mother's white dress, the wall, their father's pair of $10 shoes, a rug, and their father's bed. Unsure of how to remove the stain from the bed, the Cat calls on the help of Little Cat A, who lives inside his hat, who lifts his hat to reveal Little Cat B, and then Little Cat C. The three Little Cats go to work, sending the stain to the television,