Sled dogs are a very popular topic among children, and in Spring 2013 the Iditarod will be celebrating its 40th anniversary!The Iditarod has been called the "Last Great Race on Earth." Spanning over 1,150 miles of the roughest terrain in the world, this race crosses jagged mountain ranges, frozen rivers, forest, tundra, and miles of windswept coast. Add to that the below-zero temperatures, winds that cause complete loss of visibility, long hours of darkness, treacherous climbs, and you know this nickname is no joke.A race this rugged would not even be possible for the human competitors (or "mushers") without their sled dogs! With between 12 to 15 per team and over 50 teams competing, there are nearly 750 dogs that compete in this race every year. Doggy-lovers and children everywhere will love to learn about these dogs and just how exactly they manage to compete in this grueling race. MUSH! will teach young readers about the Iditarod, the mushers, and the dogs whose history dates back to the famous Balto. Full-color photos will be used throughout to complement the informative text.