can be a shock collar to kill my dog?

my cousin took us One Off eBay My dog is crazy when ever you are going on and hes always attacks moody Lil attacks the puppies are not trained to a shock collar to teach him not to be underestimated is not an option note that dogs are not great xpome mixing with Maltese terrior hes big but not huge dogs

A necklace of the download is only going to increase aggression. To solve the problem of finding a specialist in dog behavior that can help you properly train him.

Shock collar.