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Rottweiler, breed of working dog that is thought to be descended from the drover dogs (cattle-driving dogs) left by the Roman legions in the vicinity of what is now Rottweil, Germany, after the Romans abandoned the region during the 2nd century ce. From the Middle Ages to about 1900, the Rottweiler moved herds from pasteur to market and accompanied local butchers on buying expeditions, protecting them from thieves, and carrying their money in its neck pouch, earning the nickname “the Butcher’s Dog.” During the 19th century, Rotties fell out of work as cattle-driving “drover dogs,” as railroads became the preferred manner of transporting livestock, and they were at risk of disappearing as a breed. They made a comeback in the early 20th century and found new roles in police and military work, including as therapy dogs.

Characteristically stocky and strongly built, the Rottweiler has a short coarse black coat with tan markings on its head, chest, and legs. Its historic role as a guardian and herder has honed the breed’s instinct for wariness and protectiveness when encountering strangers. Rottweilers are known for their confidence and intelligence, but they require a steady training regimen to learn social skills.

Breed data
  • Also called: Rottie
  • Area of origin: Germany
  • Breed group: Working
  • Height at withers: 22–27 inches (56–69 cm)
  • Weight: 90–110 pounds (41–50 kg)
  • Life span: 9-10 years
  • Did you know?: A baby-sitting Rottweiler is featured in Alexandra Day’s popular series of children’s books that started with Good Dog, Carl, which was inspired by her own Rottie named Toby.

The formal history of the breed dates back to 1901, when the first standard Rottweiler was produced by the International Club for Leonbergers and Rottweiler Dogs in Germany. The breed was officially recognized by the American Kennel Club in 1931.

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Care and upkeep

The Rottweiler needs a well-fenced yard, daily exercise in the form of long walks or runs, and mental stimulation. The breed can be aggressive toward other dogs, and, thus, dog parks are best avoided. The Rottweiler successfully competes in organized activities, such as agility, scent work, Schutzhund (“protection dog”; that is, a set of activities, similar to police dog training, designed to instill obedience and develop tracking and protection abilities), cart pulling (drafting, or “carting”), weight pull, and any other conditioning that engages both mind and body. Although the dog enjoys playing with a ball, it is not driven to retrieve it.

Rottweiler coat care is minimal, consisting of occasional bathing and brushing. Although its coat is effective in insulating the dog from cold weather, a Rottweiler should not be left in below-freezing temperatures for extended periods. The breed functions well in warm weather but may become overheated in hot conditions.

Rottweilers are susceptible to canine hip dysplasia, so puppies should be raised on a large-breed puppy food, which slows the rate of growth and lessens the risk of developing that condition. The breed has the highest rate of osteosarcoma of any breed. Osteosarcoma is a form of bone cancer that produces tumours in the leg bones, and any unexplained limping should be checked by a veterinarian. In addition, Rottweilers generally have a shorter life span (9–10 years) than other dogs of similar size and weight. Although the reason for this remains poorly understood, one study noted that if owners of female Rottweilers delayed spaying their dogs until age 6, the dogs’ chances of living to age 13 increased nearly five times.

Temperament

The breed was developed to perform a variety of tasks related to controlling aggressive livestock on their way to market, pulling carts, and protecting the dog’s owner from robbers. Rottweilers needed to be strong, brave, intelligent, and biddable to perform these duties, and today’s Rottweilers retain these traits. Although the Rottweiler learns quickly, it can be stubborn when told to perform a task it does not want to do. Rottweilers can be destructive when young. However, once they reach adulthood, they tend to be serious-minded  and not keen to play games unless they are challenging. The breed is not prone to prolific barking.

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The Rottweiler is an excellent watchdog and protection dog, but it may not be trustworthy around other pets. The breed is loyal to its loved ones, but it is often reserved, even suspicious, toward unfamiliar people. It is not usually friendly toward strange dogs, and dogs of the same sex within a household may not get along. Rottweilers are second only to pit bulls as the dogs responsible for most attacks on humans. Though these aggressive culprits make up only a tiny minority of the breed, Rottweiler owners must ensure that their dog is extensively trained and socialized to prevent it from becoming aggressive around people or other pets that could be vulnerable.

These are well established and widely accepted generalizations about the breed. Individual dogs may differ in behavior and temperament.

Caroline Coile The Editors of Encyclopaedia Britannica
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dog, (Canis lupus familiaris), domestic mammal of the family Canidae (order Carnivora). It is a subspecies of the gray wolf (Canis lupus) and is related to foxes and jackals. The dog is one of the two most ubiquitous and most popular domestic animals in the world (the cat is the other). For more than 12,000 years it has lived with humans as a hunting companion, protector, object of scorn or adoration, and friend.

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The dog evolved from the gray wolf into more than 400 distinct breeds. Human beings have played a major role in creating dogs that fulfill distinct societal needs. Through the most rudimentary form of genetic engineering, dogs were bred to accentuate instincts that were evident from their earliest encounters with humans. Although details about the evolution of dogs are uncertain, the first dogs were hunters with keen senses of sight and smell. Humans developed these instincts and created new breeds as need or desire arose.

Dogs are regarded differently in different parts of the world. Characteristics of loyalty, friendship, protectiveness, and affection have earned dogs an important position in Western society, and in the United States and Europe the care and feeding of dogs has become a multibillion-dollar business. Western civilization has given the relationship between human and dog great importance, but, in some of the developing nations and in many areas of Asia, dogs are not held in the same esteem. In some areas of the world, dogs are used as guards or beasts of burden or even for food, whereas in the United States and Europe dogs are protected and admired. In ancient Egypt during the days of the pharaohs, dogs were considered to be sacred.

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Origin and history of dogs

Ancestry

Paleontologists and archaeologists have determined that about 60 million years ago a small mammal, rather like a weasel, lived in the environs of what are now parts of Asia. It is called Miacis, the genus that became the ancestor of the animals known today as canids: dogs, jackals, wolves, and foxes. Miacis did not leave direct descendants, but doglike canids evolved from it. By about 30 to 40 million years ago Miacis had evolved into the first true dog—namely, Cynodictis. This was a medium-size animal, longer than it was tall, with a long tail and a fairly brushy coat. Over the millennia Cynodictis gave rise to two branches, one in Africa and the other in Eurasia. The Eurasian branch was called Tomarctus and is the progenitor of wolves, dogs, and foxes.

Genetic evidence suggests that dogs descended directly from wolves (Canis) and that the now-extinct wolf lineages that produced dogs branched off from the line that produced modern living wolves sometime between 27,000 and 40,000 years ago. The timing and location of dog domestication is a matter of debate. There is strong genetic evidence, however, that the first domestication events occurred somewhere in northern Eurasia between 14,000 and 29,000 years ago. In this region wolves likely facilitated their own domestication by trailing nomadic people in northern Eurasia and consuming the remains of game animals that hunters left behind.

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Most studies agree that domestication was not a single discrete event. It was a process that unfolded over thousands of years—likely involving dog populations that appeared in different parts of Eurasia at different times, with dogs and wild wolves continuing to interbreed with one another and with early dog populations being replaced by later ones. Some genetic studies have documented evidence of early domestication events in specific regions. One study contends that wolves were domesticated 16,300 years ago to serve as livestock in China, whereas another reports that early dogs dating from about 12,000 to 14,000 years ago came from a small strain of gray wolf that inhabited India. Genetic evidence also reveals that dogs did not accompany the first humans to the New World more than 15,000 years ago, suggesting instead that dogs came to the Americas only some 10,000 years ago. One study even suggested that some dogs have descended not from the wolf but rather from the jackal. These dogs, found in Africa, might have given rise to some of the present native African breeds.

No matter what their origins, all canids have certain common characteristics. They are mammals that bear live young. The females have mammary glands, and they suckle their offspring. The early breeds had erect ears and pointed or wedge-shaped muzzles, similar to the northern breeds common today. Most of the carnivores have similar dental structures, which is one way paleontologists have been able to identify them. They develop two sets of teeth, deciduous (“baby”) teeth and permanent teeth.

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Canids walk on their toes, in contrast to an animal like the bear, which is flat-footed and walks on its heels. Dogs, like most mammals, have body hair and are homeothermic—that is to say, they have an internal thermostat that permits them to maintain their body temperature at a constant level despite the outside temperature.

Fossil remains suggest that five distinct types of dogs existed by the beginning of the Bronze Age (about 4500 bce). They were the mastiffs, wolf-type dogs, sight hounds (such as the Saluki or greyhound), pointing dogs, and herding dogs.