When I visited my dear friend Linda, I met her adopted dog Gabriel.  We took him to a very large dog park in Seattle where dogs who enjoy the water can take a swim.  There were many at the park that day.  The dogs are not leashed.  As we walked, Gabriel would do his own thing: he smelled other dogs, explored the grounds, and ran.  He always stopped and checked where we were, and he stayed within eye view.  We walked for a long time.

When we got home, Gabriel took a nap.  End of story.