Thanks for asking this question because I've been wondering the same thing. My girls are 6 1/2 months and still only weigh 3 lbs. but they are very healthy furbabies. Their big and older brother who is about 15 months old weighs 5 1/2 lbs. But, I don't think the girls will get that big or be as tall. Right now they come up to the bottom of his belly.
