Wolves
How Dogs Evolved Into 'Our Best Friends'
Naturalist Mark Derr says our friendship with dogs and wolves goes back thousands of years more than previously believed. His new book explores how the relationship between humans and wolves developed.
Living with Wolves
Researcher David Mech tracks and studies wolves. He was able to earn the trust of a pack in the Arctic, which granted Mech and his team unprecedented access to the animals. He witnessed the care of their pups and joined them on their hunt.