a dominate trait that is inherently built into a species of dog is kind of ridiculous. It's like saying you can simply breed out a lab's natural inclination to retrieve or love of the water. I'll echo what several others have said; they can be a obedient, friendly, and sweet breed. But unlike many many dogs they also have the tools to be deadly and efficient and deep down in their DNA is an aggression like no other. They are in a class of their own.