I have a large unfenced area next to me with no road so if the nieghbor dog is out, she gets to go off leash. The other dog knows what the 'bountries' are and Layla doesn't leave her side. Otherwise she always has her leash on because she is rather unpredictable with cars, other people and dogs. She's a car/bike/runner/roller blade chaser. Oh and when we are at the lake she is off leash being in the water and all. Only places where she knows the boundries