Northern Dancer was a Canadian Thoroughbred racehorse born in 1961, known for his exceptional speed and stamina. He gained fame by winning the 1964 Kentucky Derby and the Preakness Stakes, becoming a key figure in horse racing history. His remarkable performances on the track earned him the title of Horse of the Year. After retiring from racing, Northern Dancer became a highly influential sire, producing numerous successful offspring. His lineage has significantly impacted the breeding of Thoroughbreds, with many champions tracing their ancestry back to him. Northern Dancer's legacy continues to shape the sport today.