Over 30,000 years, we've domesticated dogs to help us hunt, farm, and take us to places we've never been before.
From wolf packs to furry foxes to jungle dogs, see how canines have evolved and adapted to thrive in the Americas.
Patrick Aryee goes to Asia and Africa, following the canine's centuries-long journey across continents; he studies examples of canine cunning, from red foxes to raccoon dogs.