when i was working out back extending my fence yesterday afternoon, i just looped the chain around the gate so it would be easier to go in and out, but buddy would stay inside. just now i took him for a walk and saw the gate wide open as i came back. likely it blew open in the night. buddy has free access to the back yard through his doggie door. he didn't run away, and nobody came into my yard and took any of the many things lying around. amazing.