Please keep your B leashed. . . even if they act like they are content to be around because of other dogs, etc., all they need do is spy a cat or squirrel or just about anything that distracts them, and they are off and running, without regard for anything except what they have their sights set on catching. They'd run right across a road full of traffic, or anyone in the way. My younger one has escaped in our community a few times, and has only been caught when she stops to check something out and she doesn't see us coming. She also seems to think her running and me chasing is some sort of game, so she sees no reason to come back. When she was little, if I ran the other way she'd chase me, but has now caught on to that, so we are REALLY careful not to let her out unleashed.