I know dogs love to bark. Well, Duke won't stop whenever we go out. Every person, animal, tree or piece of trash we pass while out on walks he barks and howls so loud. People yell out their windows for Duke to shut up! He will never stop. And whenever he sees people, he runs after them and howls like he wants to attack them. Every dog we see, he howls and barks and pulls on the leash to get to them. I really need help!