DESTNE, CZECH REPUBLIC - JANUARY 23: A dog licks its leg before stage start during The Sedivackuv Long 2015 dog sled race in the Orlicke mountains on January 23, 2015 near the village of Destne v Orlickych horach near the Czech-Polish border. The four-day Sedivackuv Long with 88 mushers with 500 dogs is the longest dog sled race in the Czech Republic and one of the hardest races of its kind in Europe. (Photo by Matej Divizna/Getty Images)

DESTNE, CZECH REPUBLIC - JANUARY 23:  A dog licks its leg before stage start during The Sedivackuv Long 2015 dog sled race in the Orlicke mountains on January 23, 2015 near the village of Destne v Orlickych horach near the Czech-Polish border. The four-day Sedivackuv Long with 88 mushers with 500 dogs is the longest dog sled race in the Czech Republic and one of the hardest races of its kind in Europe.  (Photo by Matej Divizna/Getty Images)