Your thread made me smile. I love Rotties. Fortunately for me, I have never met a mean Rottie, and I have met many many Rottweilers. My very first experience with a Rottweiller was while camping out for tickets about twenty years ago. One person in line brought his Rottweiler with him for the camp out, and this dog was a wonderful example of the breed. Of course the owner was a great owner; he knew everything about the breed, how/when/why it was breed, what it should do, how it should do it, etc. We spent a lovely 22 hours in line with this dog. He was happy, playful, attentive to his owner, and just a real pleasure to have around. I think everyone in line left there with a new admiration for the breed. No, dogs of a certain breed do not all have to be mean, or for that matter, not all dogs of a certain breed have to be sweet. To a large extent you can train your dog to behave the way you want it to behave, no matter what the breed.