Borzoi are large, elegant sighthounds whose construction follows the ancient Greyhound template. A mature male will stand at least 28 inches at the shoulder and weigh 75 to 105 pounds. Females will be smaller. Once known as Russian Wolfhounds, Borzoi were bred to be swift and strong enough to pursue and pin their ferocious lupine quarry. A Borzoi in full stride is a majestic sight: a princely package of strength, grace, and glamor cruising at 35 to 40 miles per hour.