Training and intelligence
This breed is very trainable, but it is very intelligent too, so you must be a good trainer, and show the dog exactly how you expect him to behave, otherwise he is quite capable of making his own decisions. Rottweilers are very eager to work, and the owner must make his/her contribution by socialising and training the dog well. They can be dominant, and are sensitive to your tone of voice.
The Rottweiler should be loyal, balanced and spirited.