I&#x27;ve had both a Pekingese and a Rottweiler at the same time and me and my wife raised both with the same affection and attention. We were very relaxed about the Rottweiler, because she was always listening to command when outdoors and we never had to give her special training, whereas we had to keep the Pekingese on a short leash. Can you imagine somebody walking with a free Rottweiler and a leashed Pekingese? That was us.<p>It had nothing to do with socialization or training. The Pekingese was simply more aggressive and was never listening to our command, when outdoors at least. And at some point we simply have up on trying to educate him, because that was a losing battle. The Rottweiler on the other hand knew what we wanted at all times. She even knew when we wanted her to become aggressive without any special words spoken. Obviously she was never aggressive towards the Pekingese or she would have killed him. A hard thing to do, since this kindness wasn&#x27;t returned by the Pekingese.<p>Now don&#x27;t get me wrong, I loved both. But the Rottweiler was clearly much smarter and more adapted to live as part of a family ;-)<p>PS: Broke my heart when she died, hence why I&#x27;ll never adopt a dog again. They live much shorter lives, hence you get to be a parent of sorts, then watch them die, sometimes horribly.