Trusted by millions of pet owners, the PetSafe Gentle Leader Headcollar allows pet parents and owners to communicate painlessly and effectively in a way their dog instinctively understands. Bad behaviors such as pulling, lunging and jumping are quickly and easily eliminated. When a dog wearing the Gentle Leader begins to pull away, subtle pressure is applied to calming points along the nose loop. This prevents uncomfortable or dangerous pressure from occurring to the delicate throat area. The Gentle Leader is also an effective tool in helping to calm anxious or moderately aggressive dogs.