Whether the dog listens or not depends entirely on how you guide it. Let the dog open his mouth and let it know that "just open your mouth." Let it talk, it must be guided. First, let it calm down and touch its head and forehead. Gradually move your hand to its upper jaw and pull it up with the tiger's mouth. Be careful at this time. If the dog is unhappy and resists, give up, praise it and try again later. Never act violently, lest the dog have negative emotions. After successfully opening its mouth, let it open its lower mouth. The host immediately put a piece of his favorite food into his mouth, such as dried meat and biscuits. Repeat several times to form a reflection of something delicious in your mouth, and the training is successful. The most direct benefit of mouth-opening training is to feed medicine. If you don't have this as a basis, you have to fight when you feed medicine.