Cochise is quickly approaching 6 months old now. He is an Aussie. For the first 4 months we had him he did not make a peep. About two weeks ago he discovered he could bark and it has progressively gotten worse. Everytime someone walks by our house, or by us on the street or in the park he barks at them. I am worried that this is becoming an over compensation for his fear of people and that he may become aggressive. The problem is that the suggestions we have been given to stop his barking (using a can full of coins or simply scolding him) don't work as he can't even hear them over the barking! People are now afraid of him and think that he is mean, even though if they step towards him he runs away. Any suggestions?? I have been told by a few people this is just a phase...but I dunno! Thanks!