I just got my yorkie from a breeder about 3 days ago and I am absolutely IN LOVE!! But I've been a little puzzled by his size because he is about 4 lbs at 8 WEEKS! His mom and dad were about 6 and 7 lbs. Is it possible he can weight a lot now but his growth slow down as he gets older?? If not, does that mean I am looking at a yorkie at over 10 lbs full grown?!?!