Abstract: A dog control device utilises a dog collar attached to an eye formed from one end of a leash so that when worn the eye lies at or near the lower cervical vertebrae. If the leash is passed around the dogs chest and through the eye, a loop is formed which encircles the dogs thorax. When the leash is tensioned, such as by the dog lunging, the loop tightens and the dog stops lunging. The eye is part of the collar. Alternatively, the eye is attached to a conventional collar by a ring. A stop is attached to the leash which is threadable through the eye during the formation of the loop but which resists passage through the eye in the opposite direction in order to maintain the loop.