We have a smart puppy, but not on the street . on the street it is a vacuum cleaner that sweeps everything in its path, knows what it will hit, but it will eat something anyway. I got a collar and, naturally, having supplied with bread, went for a walk. I grabbed the first piece, I pressed the vibration, zero emotions, then the electric shock, also silence, the dog calmly finished the bread and went on . tightened the collar, threw bread again, vibration, and he didn’t seem to like it, but didn’See full review