In 1925 a sled dog named Togo led his team through danger and blinding blizzards to transport vital diphtheria antitoxin to isolated Nome, Alaska. He was best known for that wonderful effort, but in fact he already had many outstanding achievements to his credit, and continued to serve his master, the great musher Leonhard Seppala, for years to come. This is the first full biography of Togo from birth to death and beyond, meticulously researched and referenced - the story of the great sled dog who became known as the most heroic animal of all time.