The Cat in the Hat use of the term "cat" to refer to jazz musicians. According to Nel, "Even as [Geisel] wrote books designed to challenge prejudice, he never fully shed the cultural assumptions he grew up with, and was likely unaware of the ways in which his visual imagination replicated the racial ideologies he consciously sought to reject." Geisel once called the fish "my version of Cotton Mather", the Puritan moralist who advised the prosecutors during the Salem witch trials. Betty Mensch and Alan Freeman support this view, writing, "Drawing on old Christian symbolism (the fish was an ancient sign of Christianity) Dr. Seuss
The Cat in the Hat Comes Back takes his hat off and unleashes a "Voom", which cleans up the spot, clears all the snow from the paths, and puts all of the Little Cats back into the Cat's hat. The Cat leaves, with the promise that he and the Little Cats, from A through Z, will return someday. The book ends in a burst of flamboyant versification, with the full list of little cats arranged into a metrically perfect rhymed quatrain, designed to teach the reader the alphabet. After the 2003 film adaption of the original story, it was planned to make a sequel based on "The