My 8-month puppy purebred husky malamut not doing that at its head but since the purchase and use of this necklace, I have more concern and dobéissance.Je behavior simply shows the remote and It's enough. I recommend this necklace with use of training and pay attention during its first use, the remote control is set to the highest power. Small problem: the delivery time is very long, but followed by the supplier is at the top!
