We have the opposite problem of most of the posters. Our male pekin constantly attacks our 120 lb American Bulldog. He tries to attack our boxer but he thinks it's a game and just runs away. Eventually the bulldog gets aggravated and will start nipping at the duck until he stops, but sometimes she will try to pin the duck with a paw and in afraid one of these days the duck is going to get himself hurt. Any tips for taming an aggressive duck?