Man's First Friend
They have shared our lives for 20,000 years. Along the way, they’ve helped us find food, kept our livestock, protected us from our enemies, guided us in extreme conditions, and saved us from peril. Now, they comforts us, relieving loneliness and helping us cope with old age. How did dogs come about? Watch the full 90-min documentary and look for our segment on the avalanche dogs, available in UHD, on CuriosityStream.