Really? All this support for someone who’s treating the symptom rather than the disease? Who ever gave y’all it was ok to let any dog, no matter how young, put a leash in his mouth? You are the alpha dog, and make sure your dog(s) know that. Same goes for tying to a post (not that I recommend taking a dog somewhere when you’re just going to leave him tied up while you do your shopping or drinking or whatever). Train your dog to understand that being connected to a hitching post means it’s time to lie down & take a nap until you come back.
(Edited: I can’t believe I typed “leach” for “leash” 