Few sporting events attract as much attention, or create as much spectacle, as the Iditarod Trail Sled Dog Race. Each March, despite subzero temperatures and white-out winds, hundreds of dogs and dozens of mushers journey to Anchorage, Alaska, to participate in "The Last Great Race on Earth," a grueling, thousand-mile race across the Alaskan wilderness.
While many veterinarians apply, only a small number are approved to examine the elite canine...