Cat poops, cat buries poop with hind feet, cat gets picked up, cat hears a scary noise and digs back claws into your chest shoulders and head as it climbs over you to escape
And they're fluffy and cute and a nice friend :-)
For real! Isn't that terrifying?
Also, as many can-openers will know, some others will watch you doing your thing, without you being able to stop them, and learn from that to use the loo in comical but clean ways.
Comical as in how they crouch on the lid, hind legs spread wide, butt hanging low over the middle, forelegs on the front. Clean as in not hitting the lid. They basically want their shit "gone" without having to mess with it. If they see/watch/understand/learn a possibility to do that, they'll use it. (In my personal experience with the small sample size I have. Though there are many writings from others, describing the same)
That would be a dog.