Any type of bug, the more legs it has the worse it gets. Ugh.
As for my patronus I would like to think it would be something super cool and unique like rare jungle cat but it'd probably just be my dog or something that symbolizes my ADHD/randomness
My patronus would totally be a cat. I don't like sudden, loud noises (or loud noises at all for that matter), and id really rather sleep than do anything else.