Despite the phlegmatic and good-natured disposition, “Americans” tend to dominate the novice dog breeders. This is especially true for young males who seek to defend their rights not only among relatives but also among people. Most often, bulls make attempts to usurp power before the age of one and a half years. To avoid this, it is worthwhile to clearly define the hierarchy already from puppyhood, otherwise, the intervention of a professional dog handler will be required.