Even though the mushers care more about their dogs than themselves. Over the years in total 147 dogs have died. In the book Miller stated that “traveling long distances in the extreme cold was a dangerous challenge. If the dogs ran to fast, and breathed too deeply, they could frost their lungs” (Miller 227). Although these dogs are used to the cold, they can still get really sick and hurt. These dogs have to run at least 1,049 miles, some dogs get blisters on their feet and many dogs get bloody and swollen paws. At some of the checkpoints dogs drink from buckets that have rust