GREAT FALLS— Brett Bruggeman is a Great Falls dentist who specializes in root canals. But, what may come as a surprise, is that he owns 36 sled dogs and is a musher who competes in sled dog races. Brett and his son, Spencer, coincidentally were both reading books about sled dogs at the same time about seven years ago. Spencer, being born with a birth defect in his right leg, left him unable to do traditional sports. After reading these books on sled dogs, they both realized they wanted to start a sled dog team. This is when Skinny Leg...