awwww! Sounds like my little bitty Cybele! She's clocking in at a whole 3.7lbs (just got weighed last September) and the vet asked if she was fixed yet as she's so young. DH looked at the vet like she was a moron and told her that Cybele is almost 4 years old and has been fixed for 3 years. We got her at like age 3-4 weeks and DH actually had to teach her how to eat harder foods (we had her on KMR for about 3 weeks). But you wouldn't want to bet against her in a fight!
On a different note, this picture of Odin is priceless. Or worthless, haven't quite figured it out. :D :D :D (note: no birds were harmed in this picture, much to Odin's dismay)