I had a canaan or Kelef K'naani when I was a kid, he bit everybody in the neighborhood, Postman, garbageman, meterreaders, everybody. So my dad tood him to live with my gramma in a near bye town. Couple a days later he showed back and reigned terror on anyone who came in our yard for the next 10 years. But he was a great dog.
RIP Teddy Jack.