I like the hamsters and I use them as pets. I do wish they were more interactive but they fit in a number of households for me. Most of the others feel more decorative. I'd like the bees more if they weren't so hard to manage.. maybe someone has a tip I don't know other than spamming interactions with them? Either way I have a lot less bee hives even though my sims usually have a garden.
I want interactive birds and yes caged birds! Would love to see it be let out of it's cage to climb around on it or be picked up by the player if it had to be linked to an object like the hamster is. I know we have that bird feeder but it's not the same thing as a pet.
I'd also like snakes and maybe even spiders. Bunnies would be nice too..