[[caption-width-right:350:"He knows a lot about, he knows a lot about, he knows a lot about that!"]]

An EdutainmentShow on Creator/PBSKids starring Literature/TheCatInTheHat (voiced by Martin Short), Sally, Nick, and Fish and featuring Thing One and Thing Two. The series is based loosely on a franchise of books called ''The Cat in the Hat's Learning Library'', which was later retitled to match the name of this television series.

!!This show contains examples of:

* AreWeThereYet: In "Itty Bitty Water," the Cat moans this after the group has traveled across a long desert to reach a stream. Fortunately, the answer is yes. They've reached the stream.
* ChristmasSpecial: ''The Cat in the Hat Knows a Lot About Christmas!''
* ComeOutComeOutWhereverYouAre: Barry the barracuda sings a rap song that includes this as part of its lyrics while he's hunting for his prey.
* DisembodiedEyebrows: Fish
* EdutainmentShow: Unlike a lot of the more recent offerings, Aesops or pro-social values aren't the primary goal. Instead, the show has some very interesting things to teach about science and nature, and particularly various types of animals. Even PeripheryDemographic watchers may learn something they didn't know before, such as the properties of the blue-footed booby's feet, or the various ways in which a wolf can find their pack.
* ExcitedShowTitle
* FantasyHelmetEnforcement: Part of the ritual preflight checklist before each adventure, as they settle into the Thingamajigger: "Buckle up! Flick the jiggamawhizzer!"
* LargeHam: Martin Short as the Cat. ''Good heavens'', Martin Short as the Cat.
* MobileFishbowl: Fish -- in this series apparently the Cat's companion rather than the children's pet -- travels with the group in a fish bowl that sits in a special cradle on the back of the Thingamajigger.
* PlutoIsExpendable: In "The Planet Name Game," the Cat, Nick and Sally travel into space and name the eight planets. Neither Pluto nor the controversy surrounding it are mentioned. Incidentally, this may be the first series of its type to touch the subject of naming the planets since the 2006 decision.
* RaceLift: In the books, the male child character was white, but he has been changed to black for the TV series. Additionally, the new books being released under the banner of ''The Cat in the Hat Knows a Lot About That'' depict him as black.
* RefugeInAudacity: In every episode, the Cat tells the kids to get a parent's permission before they can go on the day's adventure to meet [insert outlandish animal] in [insert whacky place name]. The parent always allows it, thinking they're just pretending.
* RhymesOnADime: The Cat, regularly and obviously, in the Seussian tradition.
* RunningGag: See RefugeInAudacity above. Additionally, each episode features an interlude wherein Thing One and Thing Two are called on to get the travelers out of some difficulty, usually by building some wildly complicated contraption.
* SeldomSeenSpecies: Many episodes of the show are focused on animals and it sometimes covers some more unusual ones including the duck-billed platypus, booby birds, water striders, and, of course, the ever-rare hatted-cat.
* TitleThemeTune: "Wherever you're going, wherever you're at, ''The Cat in the Hat Knows a Lot About'' (he knows a lot about, he knows a lot about, he knows a lot about...) ''That!''"
* ViewersLikeYou: Creator/{{PBS}} shows mandate a "thank you" at the end of the funding credits. The Cat takes this as yet one more opportunity to be supremely hammy. "And you and you and '''''you'''''! Thanks. So much. You're very kind."
* WhatHappenedToTheMouse: Originally, the main characters in ''Literature/TheCatInTheHat'' were the Cat, Sally, her brother, and their pet Fish. In this series, it's the Cat, ''his'' pet Fish, Sally, and a new African-American boy who lives next door, named Nick. What happened to Sally's brother? And when did Fish -- notoriously suspicious of the Cat in the original -- switch sides?
* WhosOnFirst: One of the quiz gags with Fish involves an owl that keeps hooting when Fish is trying to ask us his question about what sound an owl makes.
-->'''Fish''': You got it this time, but next time I'll stump you for sure.
-->'''Owl''': (''hooting'') Whooooo.
-->'''Fish''': Me, that's who!
* YouDidntAsk: In the Christmas special, this Ralph the reindeer's explanation when Sally and Nick ask why he didn't tell them that he's one of Santa's reindeer.