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. Stops Pulling & Lunging- No more tug of wars, jerking or being dragged down the street - even children and the elderly can walk large or difficult dogs. Won't Choke - Gentle Leader gives you control with humane restraint - pressure is applied at the back of the neck instead of the front of the throat. Prevents Jumping - Easily stops jumping and other unwanted behavior as the Gentle Leader Headcollar helps you control your dog in a "stand," "sit" or "down" position. Not a Muzzle - When fitted properly, your dog may open his mouth to eat, drink, pant, fetch and bark - except when you pull on the leash to close his mouth. Controls Barking - Stop unwanted barking with a simple pull of the lead to close your dog's mouth - no need to shout or scold. Helps Manager Other Behavior Problems - Under the supervision of a trained professional, the Gentle Leader can be an effective tool, in an individual behavior modification program for problems such as fear, anxiety, agression, etc. Many professionals and owners have reported a calming effect on their dogs. StopsBegging-Eliminate annoying behavior at meal time and help the kids hang onto their snacks!