My Gracie is 10 months old and weighs 4.1 lbs. She was the runt of her litter and the breeder said she would probably reach about 5 lbs. I really wouldn't care how much she weighs because she is the sweetest, most precious little girl anyone could ever want. If she reached 15 or 16 lbs. it would just be more of her to love and that would be alright too.