Great Danes may be large, but they are very well known as gentle giants! Don't let these big guys fool you, they are one of the most gentle dog breeds known to man. They are wonderful with kids and love affection. They don't like being alone and they hate the cold. Great Danes are overall very healthy dogs. They do shed a bit and can be known to drool, but nothing beats their loving, gentle nature. Great Danes are expected to live to be 7-10 years old. They weigh in at a whopping 100-200 pounds and can stand to be up to 3 feet tall!