The Rottweiler was registered by the American Kennel Club in 1935 and is classified in the working dog group. This breed has been renowned historically for its ability to guard, protect and herd. Unfortunately, the Rottweiler dog breed in recent years has developed the reputation of being aggressive and prone to violence. A large, strong dog, the Rottweiler can certainly be a formidable opponent. Its ancestry may help explain how it developed its good and bad reputation.

The Rottweiler has an illustrious though unconfirmed history. The breed is thought have descended from Roman mastiff dogs almost two thousand years ago. These dogs were a viable part of the conquering Roman army. They were used to herd cattle to feed the army and also as watchdogs. By 700 A.D., the Romans had been ousted from the city of "das Rote Wil" (the red tile) but ancestors of their dogs remained and were used as beasts of burden and for herding in the city, which later became Rottweil, Germany.

The inherent intelligence and strength of the breed allow these dogs to be trained in many tasks and the Roman army utilized Rottweilers in conquering Europe. The protective nature of the breed can manifest itself in aggression if Rottweilers are not trained from an early age. Some owners take advantage of that aggression or mistreat dogs so that these tendencies come out.

Maltreatment of animals is the most common reason for aggressive behavior. Because of the Rottweiler's muscular body structure, some owners may raise the breed to be aggressive in order to engage them in illegal dogfights. The natural temperament of this breed leans more toward calm aloofness than aggression. Rottweilers are also very intelligent and can be trained in police work and to engage in respected Schutzhund competitions where the dogs are tested on the skills of the breed such as ability to perform search and rescue, follow a scent trail, and attack a perpetrator under controlled conditions. There are really no bad dogs, only bad owners.

The Rottweiler's strong physical traits also define the breed. All purebred Rottweiler's have distinctive coloring with an all black short coat with brown markings in specific areas of the cheeks, muzzle, paws and legs. A strong and large dog, the Rottweiler is muscular and has a broad head and chest. Its tail is generally docked to give its body a longer, more streamlined appearance. Rottweilers are easily differentiated from other dog breeds due to their physical and personality traits.

It is important to clarify that the natural temperament of the Rottweiler dog breed leans more toward calm than aggression. A potential Rottweiler buyer should research the breed and make sure he can handle a large, active dog before buying. However, a buyer should not be more afraid to buy a Rottweiler than any other dog breed.

Steps a buyer can take to ensure he purchases a physically and emotionally healthy Rottweiler include researching the breed first and know what breed standard traits to look for, research breeders to find an ethical breeder of purebred Rottweilers, visit the breeder kennel to see how Rottweiler puppies are raised, obtain pedigree information to determine lineage, obtain health information to ensure the Rottweiler has been evaluated for genetic problems, ask the breeder to provide Rottweiler information, specifically on training and discipline, and lastly make sure the buyer's household is appropriate to meet the Rottweiler's social and activity needs

With many dog breeds, an alternative to buying from a breeder is buying a purebred from a rescue center. Because of Rottweilers' tendency toward aggression if they have suffered maltreatment, buying from a rescue center may not be a good option with this breed.