All sorts of feral/stray animals.

Baby foxes

Bats or any nocturnal creatures! c:

A Cerberus

A baby snake who will help you take over the wizarding world

Rabid polar bears? lol

Fireflies obviously!

I'm going to state the obvious and go with panda bears. Maybe even a red panda, or two?

Your dog has always been a faithful companion but you've always liked taking care of horses

a lot of unusual pets like snakes, insects and wild animals that wander in (mostly reptiles)

Your avatar strikes me as a cat person c:

Rabbits. You sit in a clearing playing your pan flute for them.

a hamster

A racoon who steals nice things for you

Based on your avatar, I would go for horses. I guess my avatar makes it pretty easy too though

Yep, I'd say doves and other birds. lD

A mouse or a lizard. But inclined towards mouse as they do not get attached to places and are good on the go.

Something Exotic like a Comodo Dragon... maybe a Lynx, yeah I think a Lynx :)

A raccoon

Cats, dogs - lots of domestic animals.