Currently, the only other animal I have besides the dogs is Biggs, my male rat.
I also have a cat, Apollo, who lives with my parents. Although I honestly don't think he'll ever live with me again during his lifetime, I still consider him mine. Should something ever medically happen to him, I would be the one paying the bills and making the decisions. He just turned four.
In the past, I've had dogs, cats, hamsters (dwarf and syrian), mice, rats, ferrets, Guinea Pigs, parakeets, a Cockatiel, a gerbil, bettas, ADFs, a Crested gecko, and an STO.
This is the fewest amount of animals I've ever had, and I'd love to have a few more pocket pets around, but DH isn't as enthusiastic as I am about them, so I'm picking my battles. The next additions will likely be two ferrets this winter. I'd love to have another hamster again, and a rabbit or two may come along in the next few years, although I'm leaving that up to DH since they will be mostly his.