My dog (a lab/heeler mix) is 14 months and has a bad growling issue. He will come up to you and act like he wants to be pet, tail wagging and all, but soon after you start petting him he will start to growl. This also happens when someone new comes into a room while we are watching tv, or when you try to give him food. We respond by putting him into the basement for a minute or two, and since he is very clever, he instantly goes over to the basement when he growls. I think he knows it’s wrong, and will act very guilty when doing it, but he doesn’t stop. What do I do? The basement isn’t working, and I just want my snuggly, playful puppy back.