Rottweilers are a fascinating large breed dog! They are powerful dogs and can be quite intimidating at first sight, but when properly trained and socialized they make loyal, loving companions. Rottweilers are one of the oldest dog breeds in the world. They were used as working dogs in Germany for centuries before becoming popular as pets in the United States. A Rottweiler's personality can be quite variable depending on his breeding and early training. Some Rottweilers are very active and most r