Hello, A friend mine has a Airdale with 11 months of age. The dog always became dominant and aggressive (with the owner still not) because the owner let him do what it want. He is loving, adores to play, never for quiet, however if someone opposes it bites imediatly. I do not know as to act with the dog whith its owner near(who finds that the dog is very well). The only thing that it makes good is to seat, all the other basic commands still did not learn. How I must act to the dog?