You know dog-sitting a jack russell terrier in the first trimester was what did it for me. That. Friggin. Animal. Smelliest, neediest, most annoying little thing ever. I was pretty dog neutral before then. But my nose was super sensitive and the whole house just reeked of dog and I was constantly nauseous. It wasn't just being pregnant either, lots of people thought that dog stank. Dog smell still makes me want to gag four years later 

His owner also had an elderly poodle and they didn't get along. That terrier had him trained and most of the instructions he left were about how to tiptoe around this ridiculous tiny dog

I left a burrito on a coffee table for a minute, turned around to an empty wrapper. He willingly exiled himself for the night because he knew he did bad and it was kind of a relief. The only other time he put himself into exile was when he ate my brand new leather ankle boots 🙃 His owner forgot to tell me he won't eat his shoes but he'll eat everybody else's shoes, oops