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 (TV special) and says she'll return at 3:30 sharp. While their mom is out at a job interview, they have no other choice but to wish they had something to do. The mysterious, quirky Cat in the Hat suddenly enters with a bump and fools around a bit. The family goldfish named "Karlos K. Krinklebine", demands that he must leave, but instead the Cat plays a game which he calls "Up, Up, Up, With a Fish", placing the fishbowl on top of a stack of bubbles. The children notice that the Cat is making the house a little untidy, and Conrad recalls