The Cat in the Hat Knows a Lot About That! is a Flash-animated musical preschool television series featuring Martin Short as the voice of The Cat in the Hat, that premiered on Treehouse TV in Canada on August 7, 2010, also airing on YTV in Canada on weekday mornings from 2012 to 2013,[2] and on PBS Kids and PBS Kids Preschool in the US on September 6, 2010. It also aired on CITV and Tiny Pop in the UK.[3] The show is based on Random House's Beginner Books franchise and The Cat in the Hat's Learning Library,[4] itself based on the 1957 children's book The Cat in the Hat.