Why and How the Gentle Leader® Headcollar Works First of all, the Gentle Leader® Headcollar is NOT a muzzle. When fitted properly, your dog is free to open his mouth to eat, drink, pant, fetch, bark and even bite - except when you close his mouth by pulling on the leash. ??The Gentle Leader® Headcollar features two soft nylon straps - the collar portion fits high at the top of the neck, and the nose loop fits loosely and comfortably across the base of the muzzle. Each strap has a distinct and important effect. The Nose Loop - Dogs are naturally "pack" animals with a highly structured social order. One of the ways the "pack leader" will demonstrate his position is to gently but firmly grasp a subordinate's muzzle in his mouth. This is a non-aggressive, very clear signal regarding who's the boss! The Gentle Leader's® nose loop encircles your dog's muzzle in this same manner, letting him know in his own language that you are his leader. Dogs feel more secure wh Type: Collars Material: Nylon Color: Blue Breed Size: Medium Breed