In a cat Hogwarts, the Houses would probably be Meowffindor, Whiskerclaw, Pawpuff, and Purrtherin, instead of Gryffindor, Ravenclaw, Hufflepuff, and Slytherin. The House tables would have lots of cat food, treats, and other delicacies for cats. All doors would be cat doors, and the portraits would all be of cats. Dumbledore would be an old, white and silver cat. McGonagall would be a tabby cat with spectacle markings. Flitwick would be a small, silver cat. Sprout would be a brown and cream cat. Snape would be a black cat. Hagrid would be a big, brown cat. These are just some thoughts about a cat Hogwarts.