Dogs and humans are thrilled: the training style, which originally comes from American work with dolphins and uses a kind of clicker, is now an indispensable part of dog training. More than a fad, more like a revolution in dealing with the four-legged friend, the acoustic signal of the clicker simplifies the dog's learning. From everyday training to tricks, everything can be taught to the dog more easily and effectively-positive by means of "click". This method enables a completely different form of cooperation between man and dog.