Ferret although I don't have a babyfur 'sona. (The avatar image isn't my 'sona - it's one I got from one of my favorite artists.) My 'sona is a late 20s ferret who works as a network engineer and doesn't wear diapers.
It's a pretty new sona of mine who was actually designed and gifted to me, but I love the lil guy. Right now though I don't really associate him with my adisc account atm although I'm thinking about changing that