"I think what really summarizes the link between dog and human evolution is survival of the friendliest," said Brian Hare, an evolutionary biologist. Learn more about the connection between dogs and humans in this collection of 60 Minutes stories. From 2014, Anderson Cooper's report on Chaser, a dog that could seemingly identify the names of over a thousand different toys. And from November of last year, Cooper's story on how dogs may have evolved to be friendlier, and his look at how trial canc