i agree about the teeth thing too, they could be slower growing, and the weight thing..chill..4-5lbs is still TINY dont be obessed with 2-3lbs range and no one can guarantee the weight no matter what you pay them. if you like her than thats what matters.
i just dont see what the big deal is b/w 2 & 4lbs... it is still extremely tiny there is really no diference between your 3 pounder and a 4, 4 1/2 pounder |