My Rudy is 6 months old and the last time he was at the vets was last Monday to get neutered and he weighed 9 lbs 8 oz. The place where we got him called him a "big boy". At 8 weeks old he allready weighed 4 lbs 2 oz. Thanks everyone for letting me know that probably at 7 months they don't grow too much bigger. I am learning a lot from all of you. Thanks so much.