My girls are both about 3 -3.5 lbs and will likely reach close to 5 lbs (I think). I am really not sure how you can tell. Anyway...when someone stops us and asks about their weight, my 9 year old son has a great response. He always says the same thing. He will simply say...we dont know how much they weigh, but they act like they are 100 lb dogs and we like it that way
