I am tempted to search on the internet Animals That Lick Their Anus (or butt) but I'm scared to look at the results. O.O
Cats ass > humans, it's a fact. Plus, every time you flush the toilet, the shit particles spread all over the bathroom including into your toothbrush and etc.
HAH! My bathroom is in a separate room with the shower. But I remember watching a british show that said the same thing.
Did you know there is often fecal matter that makes its way onto household toothbrushes just by commonly being in close proximity to where we humans do our business, and wash our hands? The micro-world can be scary. Can't blame the cat though. It's not like they can use toilet paper. And you ever have that itchy feeling when you haven't wiped completely? Lots of animals lick themselves.
Humans lick ass as well. Be careful next someone kisses your cheek. It's basically an ass on your face