I've had two dogs, two cats, twenty-seven fish, fourty-two sea monkeys and a snail.
I'm now down to one cat.
I loved both my dogs but they wouldn't really do a lot and were not very active as they were quite small dogs and they were both blind as well.
One of my cats ran away and has never come back but the other one is really a lot of fun especially if you drug it up on catnip. However he sleeps all day and only gets up for food and maybe wonders about for half an hour.
My twenty-seven fish just swam. (No I didn't have them all at once.) They were dull but kind of pretty. However one of them swam into the filter and got shredded, and its skeleton clogged it up so the other fish died about two days later. (One of them was a cannibal!)
My sea monkeys were like my fish, they just swam about all day and mated nearly 24/7 which was interesting to watch. :lol: They all got flushed down the toilet in the end though, that was the most fun I ever had with them.
As for Reginald the Snail. He curled up in his plastic box all day so I set him free.
So in my own pets it would be cats but I enjoy playing with my relatives' dogs as well.