A new book from the New York Times bestselling author of “Soldier Dog”, “Trooper Dog” and “Super Agent Dog” Maria Gudavage about dog doctors. A dog is better than any electronic device in detecting, for example, cancer - it does this by smell . In the same way, dogs can warn the patient in advance about the approach of seizures or spasms, about sudden sleep attacks and fainting. They accompany sick children and adults, becoming not only friends for them, but also a reliable support. The author talks about how such dogs are trained and trained and what kind of connections are established between them and people who often trust them with their lives.