They show up, well groomed and healthy, and get judged, whereas in a horse or dog show the animals would be expected to jump through the hoops (literally and figuratively) to prove they are not only beautiful but sound in the muscles as well. Cats (luckily for them) are required only to sit and be beautiful (which they are very good at), and all the movement and hustle are on the part of their anxiety-stricken owners.
