Check the listing for details. Barkless Dog Muzzle Size 6 Full Face Anti-bark Anti-bite Rubber Adjustable. Condition: Used. Listed at 6.99 USD. Barkless Dog Muzzle Size 6 Full Face Anti-bark Anti-bite Rubber Adjustable This Barkless Dog Muzzle is the perfect solution for those looking for a reliable and effective muzzle. Made from high-quality rubber, this muzzle is designed to prevent your dog from barking and biting. The full-face design ensures that your dog is unable to see your face, which can help to reduce anxiety and improve behavior. The adjustable strap allows for a customized fit, while the anti-bark and anti-bite features ensure that your dog is safe and secure. This muzzle is ideal for use during training and obedience sessions, and is suitable for dogs of all sizes. With its durable construction and reliable design, this Barkless Dog Muzzle is the perfect choice for any pet owner looking for a safe and effective muzzle.