Ive got a puppy who is 16wks old and ive just weighed him on the wii fit and hes only 6kgs, i knew he was really tiny for his age but 6kgs sounds worrying. Hes booked in to the vets tomorrow but just wanted to hear your opinions. Hes very active and seems healthy in every way just small. His breeder says her dogs start off small but grow for longer and that he will end up being a very large dog. We saw mum and dad and they were pretty big, strong looking dogs. He was one of a litter or 10 and ive seen one of his brothers and two sisters and they were all the same size. He has a pretty good pedigree from what i can tell. Is this something to worry about? The breeder really doesnt seem worried and just says hes will shoot up soon enough. What do you think?