Watch Amazing Dogs live

In Smithsonian Channel's three-part series, "Amazing Dogs," biologist Patrick Aryee follows the twists and turns of the canine family tree, traveling from the Americas to Asia and Africa. He meets dangerous and wondrous wild dogs, including the Arctic fox, the maned wolf and the racoon dog. He also meets the fastest, strongest and most unusual-looking domestic dogs on the planet, including the Bankhar, the Saluki and the Inuit sled dog. Aryee studies these spectacularly varied creatures, from the wolf to the fox to the much-loved family pet, and discovers how dogs evolved to change the course of human history.