Lets see, we've got....

Ethan and Sala the dogs.
Khaith, Martha, and Adelaide the cats.
Don, Indie, and Gir the birds.
Then there are the ten hermit crabs. Who all have names, but I don't think they are aware of it.

That makes 18, which sounds like way more than it actually feels like.
Its sad to hear of all the loses. My ferret, Queen Jillian, passed away earlier this year.