My dogs have a fence and will never run free. I live on the outskirts of a small town and we do have a lot of wild life here as well as people who would do harm to them. I don't understand why people think dogs aren't happy unless they're running free when I can't cook dinner without a 65lb and 90lb dog under my feet! To me they are happiest when they're with you. My nerves could never handle the thought of them running free, anywhere.