They call them the Grey Ghost for a reason. The Weimaraner is one of those breeds that seems to materialize out of thin air — that ethereal silver-gray coat, those pale amber or blue-gray eyes, the effortless athletic grace that makes every movement look utterly intentional. Whether they're bounding across a field at full speed or draping themselves over your furniture like a very large, very distinguished throw pillow, Weimaraners...