Let’s quickly clarify this fundamental concept: If a dog exhibits aggressive behavior towards the family it lives with, or against their acquaintances or visitors, the only logical explanation is that the animal has the character of a Very Dominant (VD) subject.
These subjects, until a few decades ago, were rare. This behavioral character represents, in every case, a danger for humans. Subjects in the vast majority of cases, from an early age, assume command with large facility of its own family and consider where they live to be their territory. As a logical consequence, they put in line whoever tries to impose on their command and defends their territory (garden and house) from whoever they see as a potential invader, even family or close friends of the so-called owner of the house. In a normal situation, when a dog recognizes and accepts the dominance of its owners, it will welcome with a wagging tail and celebrate whoever “comes in peace”, while it will rail and bark at a person it doesn’t recognize. In the opposite situation, it will be the dog to decide who can and who can’t enter the house, perhaps rejecting the brother of the “owner” and accepting quietly the unwelcome person. These situations are easily identifiable when the “owner” has to ask the dog or keep him on a leash when a guest arrives. Usually a Very Dominant subject will be capable of barking and growling at a person, even if they pass daily in front of the house. While a “normal” dog, once identifying a non-dangerous stranger, will stop after a few days and begin to ignore them. The German Shepherd was precisely described by Fioroni as the prototype of the balanced dog (when they were), but they are very often more terrible in this “specialty”, coming to organize ambushes, hiding behind the hedges until the last moment and appearing suddenly, barking furiously and making the people passing get terribly scared! The aggression of an animal that lives in close contact with humans, therefore, must be seen as something thoroughly negative.
Fear and aggression can only be justified in cases of objectively serious self-defense. All subjects that show unjustified aggressive behavior have to be cut from reproductive activities. Unfortunately, often the criteria of choice is based purely on beauty. Too many industry insiders ignore these behavioral problems, which inevitably increases an already high percentage of imbalanced dogs.