Temperament: The Rottweiler is a very territorial, imposing dog breed and is ideal for protection. They are calm, trainable, courageous, and devoted to their owner family. They have a reliable temperament. This dog breed requires a strong leader and firm training. Otherwise you may end up with a very powerful and overly aggressive dog. The Rottweiler is a natural guard dog with a mellow temperament. They are highly intelligent and have proven their worth beyond question in police, military, and customs work over many centuries. This breed needs a lot of companionship and socialization to be truly happy. They can be aggressive with other dogs and should be kept on leashes in public places. When the Rottweiler is consistently brought up and trained, it will be a good playmate for the children. It will accept cats and other household pets as long as the dog has had a positive experience with them while it was young. Friends and relatives of the family are normally enthusiastically welcomed. Strangers can get no further than the sidewalk. The breed does well in competitive obedience, schutzhund, and tracking. Schutzhund lines tend to be more aggressive and thus should be avoided if the dog is purely intended as a family pet. There are two types of Rottweilers, German and American. The difference between two types is the German dogs are breed to work or have the drive to do so. The American dogs are not breed for these characteristics.