Of course, there are always exceptions. What I wanted to say is that you'll have a much higher probability of success with a race that's known to be aggressive

Of course, there are always exceptions. What I wanted to say is that you'll have a much higher probability of success with a race that's known to be aggressive, if that's what you want, then with a race that was bred as a companion dog. And half-breeds can be very aggressive or very friendly, but it's essentially a lottery.