Our family staffy is 15 years old and nearly deaf. He has been a wonderful family dog and shared all our joys and sorrows and given great devotion to all family members. We have a new baby girl in the family, 2 months old, and the dog just does not like the baby crying, or us talking to her. We are not sure whether he is showing aggression or just does not know what this thing is that has entered his life, and can make so much noise. He just barks and barks and barks. This is stressing us all out!! Please any advice will be welcome.