The Cat in the Hat Knows a Lot About That! is an animated television series that premiered on August 7, 2010, on Treehouse TV in Canada, on September 6, 2010, on PBS Kids in the US and also in the UK on CITV and Tiny Pop. The award-winning series is based on Random House's Beginner Books franchise, The Cat in the Hat's Learning Library, and is developed by Portfolio Entertainment, Random House Children Entertainment and Collingwood O'Hare Productions. The first season 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.
- Martin Short as The Cat in the Hat
- Jacob Ewaniuk as Nick
- Alexa Torrington as Sally
- Rob Tinkler as Fish / Thing One and Thing Two
- Tracey Hoyt as Nick's Mom / Sally's Mom