You can use surprize sounds or a visual motion to interupt the behavior. Some people like clapping or a small bike horn, certain words or sounds work too. Try the sound AAAA (like you are saying, the A sound in the word apple). You can toss a balled sock or roll a tennis ball. I would try calling the puppy and treating too. I don't now why you would need a muzzle if the puppy is on a leash and you are with him. But if, he has the freedom to run around then I would muzzle.
__________________ Teresa & Rubin, Gracie, Abba, Ginny Joy and Julia Rose  Act like a dog, be kind, forgiving, and loyal. |