The Cat in the Hat script, with Chris Meledandri as producer, and Audrey Geisel as the executive producer. However, the project never came to fruition. On January 24, 2018, it was announced that Warner Animation Group was in development of a different animated "Cat in the Hat" film as part of a creative partnership with Seuss Enterprises. In 2009, the Royal National Theatre created a stage version of the book, adapted and directed by Katie Mitchell. "Seussical", a musical adaptation that incorporates aspects of many Dr. Seuss works, features the Cat in the Hat as narrator. The musical received weak reviews when it opened, in
The Cat in the Hat (TV special) house they visit has a pessimistic fish who "always tries to flatten the fun". Karlos becomes angry and accuses the Cat of not being a real cat, and his hat of not being a real hat. But the Cat indignantly asserts his legitimacy by singing his name in several languages. The tune becomes so catchy that everyone, even Karlos, joins in and contributes, telling the Cat that in Russian he is a "chapka in a shlyapa". (An interesting point to note is that in the Russian portion of the song, the Cat describes himself as a "chapka in a shlyapa",