I think you could train it out of them. back in the 70's, Doberman Pinschers had the well deserved reputation that Pitbulls and Rottweilers have today. Through careful and professionally selective breeding, they managed to remove that particular aspect from the breed. I owned a Dobie for a little over 10 years. She died a few months ago and I lost the best friend I have ever had. She was a gentle giant but very capable of attack if me, my wife, or friends were in danger. She never harmed a person but killed more than a few of the neighbour's chickens which flapped over our wall.