All three of mine are leashed 100% of the time on walks. Not only is it the law since I don't take them to off-leash areas, but their recall isn't 100% reliable yet so I'm not willing to risk it. I do take them to the park to work on their recall, but they always have a long leash attached to them just in case. Even when their recall improves I'm going to keep them leashed, I just want them to know it well in case there's an emergency.