Largest Mastiff Breed is the tallest breed of dog. The Great Dane dog by the name of George is the tallest largest dog ever recorded. He's 7 feet long, 43 inches from paw to shoulder and weighs at 252 lbs.
Meet Simba, a German mountain dog who belongs to a giant breed called "Leonberger". These magnificent creatures can weigh 170 pounds, but are incredibly disciplined, loyal, and gentle. I WOULD THINK WAY MORE THAN 170 POUNDS!