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 from which he releases two identical creatures with blue hair and red suits called Thing One and Thing Two. The Things cause more trouble, such as flying kites in the house, knocking pictures off the wall and picking up the children's mother's new polka-dotted gown. All this comes to an end when the fish spots the children's mother out the window. In response, Sally's brother catches the Things in a net, and the Cat, apparently ashamed, stores them back in the big red box. He takes it out the front door as the fish and the children survey the mess