How about a mouse? Would that be good?
HOA has severe restriction on mouse and rat.
If I become a hamster, high odds is that I would become an involuntary astronaut or colonoscopist.
Also, why on earth would I pick a small animal that can't fly or move very fast?
If it is small, it better has other perks like super speed and flight like a cockroach (I don't want to be one, I'm scared of them.)