My family is getting a Bernese puppy. I've been in constant contact with the owner and have met the puppy several times. I picked him out of a litter of 12. I'm worried that he's going to be small. My husband wants a big dog, I could care less but he's 6 weeks old and weighs in at 6 lbs 2.5 oz. Should I be worried for such a small weight at this age? I've been trying to find online a growth chart or something but haven't really found one that goes week by week. Any advise would be helpful.