If I didnt have the lab i have now, then the choice of dog would be a Pitbull/Boxer. Both breeds are very smart but sometimes stubborn. Love to have a firm but fair leader. Both breeds inherit this great value and it and it is loyality. Also Pitbull and Boxers are said to be the best guards in the world. Imagine combining them! Lots of ppl. have Bull Boxers. go to google.com and type in bull boxers and go to images. You will see why i love them so much.