YappyPooch Anti-barking device - calming aid. Muffles sounds that trigger annoying barking. Pressure point effect. Humane way to stop barking and calm your dog down. Use as a training tool. Yappy Pooch really works!!! Velcro closures for easy application and removal. Adjustable to fit any dog. Does not inhibit eating or drinking while in use. No pain, sound, sprays or batteries to change. Patent pending