The Pack: Season 1 Season 1, Ep 0
12 teams consisting of a dog and their person travel around the world competing in a variety of challenges. Hosted by Lindsey Vonn and her King Charles Spaniel Lucy. (Amazon) [more inside]
The story of the sled dog, Togo, who led the 1925 serum run, but was considered by most to be too small and weak to lead such an intense race.