Borzoi are large, elegant sighthounds. A mature male stands at least 28 inches at the shoulder and weighs 75 to 105 pounds. Females will be smaller. Beneath the luxurious silky coat, Borzoi construction follows the ancient Greyhound template. Once known as the Russian Wolfhound, Borzoi were bred to be swift and tough enough to pursue and pin their ferocious lupine quarry. In their quiet, catlike way they can be stubborn, and training is best accomplished with patience, consistency, and good humor. Affectionate family dogs, Borzoi are nonetheless a bit too dignified to wholeheartedly enjoy a lot of roughhousing. The sight of a cat or squirrel on the run will quickly stir their pursuit instinct, and fenced-in running room is a must (akc.org).