In today’s world, with its climate of brutality and increasing violence, people are thinking more than ever about the need to somehow protect themselves and their loved ones. One of the possible options is a guard dog . You can also choose firearms, various alarm systems, and martial arts mastering. In addition, there are private agencies that provide protection to those who need it and are willing to pay. But, in general, the choice is quite limited. Those who stayed on the dog, usually ask a lot of questions. Our goal is to answer them, if possible, by telling about the real state of affairs and myths associated with service dogs, as well as about the responsibility to others and before the law, which falls on the owners of guard dogs. Step by step, the reader will go all the way to the owner of such a dog - from the choice of a puppy to special training. Complete the book with a few true stories about guard dogs. The main thing that prompted us to take up work on this book is the desire to help future owners of guard dogs. We decided to draw up for them a kind of short guide to the country, which is called “Training”, and map all the roads leading there. We didn’t want anyone to think that our method was the only one possible. No, there are different methods, different training styles, different techniques. We describe what we ourselves use in practice, but at the same time we constantly emphasize: everything should be done under the supervision of a professional trainer. We will consider , They have achieved their goal ,. if our book at least partially satisfies someone's curiosity , will help someone to understand the benefits of training without violence and to understand those complex problems who are standing before a man.... They trust the dog with their own safety and the safety of their family.