The Rottweiler
A Loyal, Loving and Confident Guardian
The Rottweiler is a robust working breed of great strength descended from the mastiffs of the Roman legions. A gentle playmate and protector within the family circle, the Rottie observes the outside world with a self-assured aloofness. A male Rottweiler will stand anywhere from 24 to 27 muscular inches at the shoulder; females run a bit smaller and lighter. The glistening, short black coat with smart rust markings add to the picture of imposing strength. A thickly muscled hindquarters powers the Rottie's effortless trotting gait. A well-bred and properly raised Rottie will be calm and confident, courageous but not unduly aggressive. The aloof demeanor these world-class guardians present to outsiders belies the playfulness, and downright silliness, that endear Rotties to their loved ones. (No one told the Rottie he's not a toy breed, so he is liable plop onto your lap for a cuddle.) Early training and socialization will harness a Rottie's territorial instincts in a positive way.
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9 Things you didn't know about Rottweilers. (Article from AKC)