Hrm...
These are in no particular order BTW....I love ALL creatures but if I HAD to pick favorites...

Mammals : Wolves, Rats, My husband I mean er....does he count? lol

Birds: Raptors (hawks, eagles etc.), Green cheeked conures, Ducks (all ducks!)

Reptiles: Leopard Geckos, Mali Urtomastyx (sp?), Snakes

Fish: Plecostomus, Catfish, Bala shark

Insect : Ladybugs, Praying mantis, Spiders *technacally NOT an insect but theyre crawly right?*