I am interested in a puppy and may take possession as early as this weekend. The breeder thinks he may go oversize. He is 11 inches at the Withers and he is 12 weeks old. I had a sheltie years ago that looked like a small Collie that the breeder was growing out, but had to sell because he went over size. My others have all been in normal range, 13 to 16 inches. I'm just curious about the reliability of these charts. My preference would be to have a sheltie that is in size.... even 16" would be fine, but I worry that he might be much larger! Depending on the line and their genetic makeup, I guess that determines when they will mature and why some mature earlier, some later??
