Had any of your pets ever made you angry?

Our cats drive us nuts right now when they fight a lot. There is one in particular who keeps bullying the other cat. She will hide around the corner and wait till the other one is trying to use the litter box then will attack her right in the middle of her going - making a mess everywhere, lol.

My terrier, as much as I loved her, was very persistent when she wanted to go for a walk or wanted you to do something for her. She would bark non stop for hours nagging you.