Before my cat allergy developed to the point that I couldn’t go near them, I remember being at a friends house with their cat (that was very familiar with me) which got on my lap and was purring while I petted him, and he suddenly bit my hand and ran away with no warning or anything. I didn’t do anything to cause it either. I think it trusted me or it wouldn’t have gotten onto my lap.

Cats can be assholes for no reason. They’re kind of notorious for that. It’s just something I wouldn’t want in my life.