Cats are not "clean" after they lick themselves, if anything this behavior is primarily responsible for the cultivation of a parasite lifecycle that has co-evol

Cats are not "clean" after they lick themselves, if anything this behavior is primarily responsible for the cultivation of a parasite lifecycle that has co-evolved to the cat's gut. Cats, especially ones who share litter boxes, routinely get covered in potentially parasite-bearing feces via litter boxes and ingest it via grooming. This allows for easy additional spread/cross infection. "Cats lick themselves, therefore they are clean" is a long-discredited but persistent myth.