I have an australian cattle dog who is about seven. I'm away at college for a good part of the year and I used to be the one who trained my dog, did obedience with him, etc. Anyways, he's never really been a dog who gets along with strangers. That's fine, as we don't need him to be friendly with other people. Even though he's not a guard dog persay, he does guard our livestock. In the past few years, he's picked up the habit of growling when we tell him to do something. I know he's gotten this from just lack of discipline because my parents do let him get away with stuff. However, if you tell him to sit or mostly to lay down, he'll growl slightly as he does it. He seems very submissive, but its almost as if he has to put up a fight whenever we tell him to do something. I want to break him of this. Mind you, this is a dog that is treated like a dog. He's only allowed in the kitchen during the winter and the rest of the year he lives outside and goes in the garage at night. We don't love on him other than the occasional pet or scratch behind the ear. He gets much too excited for us to pet him all the time. He's a very high energy dog and gets frustrated very easily. I notice we have some excellent dog trainers on here and I was wondering what I could do to break him of this growling. I plan on teaching the rest of the family too so at least he can have some consistency when I am away at school.