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 the cat manages to clean up the mess." In 1999, the United States Postal Service issued a stamp featuring the Cat in the Hat. "The Cat in the Hat"s popularity also led to increased popularity and exposure for Geisel's previous children's books. For example, 1940's "Horton Hatches the Egg" had sold 5,801 copies in its opening year and 1,645 the following year. In 1958, the year after the publication of "The Cat in the Hat", 27,643 copies of "Horton" were sold, and by 1960 the book had sold a total of over 200,000 copies. "The Cat in the Hat" has