. >> brian hare an evolutionary buy ol' biologist at duke university. >> survival of the friendliest. >> what about survival of the fittest? >> so survival of the fittest is a misconstrual in the public mind of what evolution is. it's the idea like the biggest, the strongest is the idea of who wins. not at all. dogs are exhibit a of this. >> hair says it might be hard to imagine but that sweet dog you loved started out as this. a wild predatory wolf and their evolutionary story began at least 20,000 years ago when humans were hunter gatherers. >> so what we believe happened and we have science to show some of this is that wolves chose us, a population of wolves actually became attracted to humans and they were at advantage because they were eating garbage and people left around homes and wolves sort of basically gave up on hunting and attracted and friendliest towards humans. they were at a huge advantage. >> some wolves were able to feed off scraps, they weren't aggressive and over time, they became domestic. >> that's exactly right. >> to better understand how the two species diverg