FILE - In this March 15, 2016, file photo, Dallas Seavey poses with his lead dogs Reef, left, and Tide after finishing the Iditarod Trail Sled Dog Race in Nome, Alaska. Seavey won his third straight Iditarod, for his fourth overall title in the last five years. Four-time Iditarod champion Dallas Seavey denies he administered banned drugs to his dogs in this year's race, and has withdrawn from the 2018 race in protest. The Iditarod Trail Committee on Monday identified Seavey as the musher who had four dogs test positive for a banned opioid pain reliever after finishing the race last March in Nome. (AP Photo/Mark Thiessen, File)
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