Dad and former stepmom had 3 birds, all small breeds of parrots (Pionus parrots, specifically). First one was cool for like 2 weeks then got some sort of overprotective-of-my-owners complex (I was only there on weekends) and started biting the crap out of me. It would waddle along the couch when I was sitting next to my dad and come for my ear every goddamn time. Dad was all "Shove your finger up to his chest to make him step up on it and he'll submit" and then I did and the bird bit the crap out of my finger. HATE that rough rider
Other 2 birds were pretty chill, though. Kinda cool but you have to deal with crap on your shirt and furniture and carpet or anywhere else you take the bird.
Dogs are definitely god-tier. Small or large breeds, all good pets in their own right. Love cats, usually pretty good bros and don't stick around and demand attention all the time. Don't like bitchy cats that want to be petted in the middle of the night all the time (and wake you up by pawing your face

).
Fish are cool, more like a decoration than a pet, but you can do some neat stuff with aquariums.