CollarDirect Dog Muzzle Boxer American Bulldog Leather Basket Medium Large Black Brown A handmade Dog Muzzle. Intended for Boxer, American Bulldog, Rottweiler and other breeds. Has adjustable straps. Made out of genuine leather. Please measure circumference and length of your dog's snout. A - is circumference of dog's snout. B - length of dog's snout. Size M A is 13". B is 2". Size L A is 15". B is 2". If you have any questions please do not hesitate to contact us.