The family pet issue easier since gives more options and enables greater time spent on training process. With respect to having dog be defensive, that involed outright training since such behavior is not quite as ingrained in many hunting dogs as it is for other breeds such as those used to protect herding livestock. None-the-less most dog breeds are derived in part from those that guarded village or farmyard and as a result guarded animals not unlike poultry. Not all of that guarding capacity has been bred out and hunting dogs tend to train very easily with some being down right smart.