Tie your mouth and hold it. Make a slipknot ring (trotter buckle) with bandage or wide cloth, put it on the dog's nose and tie the dog's mouth, then pull both ends of the bandage behind the ear along the mandible and tie it tightly at the occipital bone behind the neck. Mouth cages are mostly made of cowhide, leather or canvas. According to the size of the dog's mouth, you can choose a suitable mouth cage for the dog to wear and tie its belt firmly on the ear buckle.