People who buy animals they don't know how/or are unable to take care of. New pet owners still learning or making common mistakes do not count. That is just a part of pet ownership... everyone's gotta learn at some point.
I'm talking about the people who go into the pet store for dog food and walk out with a sugar glider because it was "soooo cute".
Also people who drive slow in the passing lane, people who don't signal, and people who breathe very loudly through their nose while they eat (??? something about it drives me crazy).