The brochure "Electroshock Collar", which opens the series "Controversial Question", considers the problem of the use of electroshock collars already largely overcome in the West, but still relevant in Russia. Based on the research of scientists from different countries and the practice of the most successful trainers in the world, the author describes the reactions of dogs, their physical and mental states under the influence of electric current, as well as the possible consequences of using this type of training. The paper presents alternative methods of solving behavior problems based on the knowledge of modern cynology and ethology. The “Controversial Issue” series from the height of modern scientific knowledge presents a new look at important, but sometimes controversial issues.