This tips into the territory of mental illness when you do things like compulsively over-wash your hands or paws, or you develop a ritual that's so extreme that you can't sit down to a bowl of food unless you engage in that ritual.
Caen dentro del terreno de la enfermedad mental, cosas como lavarse las manos o las garras compulsivamente, o imponerse un ritual tan riguroso que no puede uno sentarse a comer algo si no lo ha cumplido antes.