I actually have a chow/rotti mix dog. He is terrific. Very loving and sweet. He is a couch potato when I am - but also loves to run and play. I have him in doggie daycare once a week and he loves playing with the other dogs. If he has one fault - he is definately a "pushy" dog that loves to get his way. Both breeds have a tendency to be assertive, but as long as you establish yourself as 'alpha' and continue training, they are great dogs.