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When Did Dogs Become Man’s Best Friend?

At some point, dogs evolved to become man’s best friend? When did this take place?

These Epic Dog Portraits Will Melt Your Heart: http://dne.ws/1CQjPRd

Read More:
The Incredible Explosion of Dog Breeds
http://www.livescience.com/8420-incredible-explosion-dog-breeds.html
“From a teacup-size Chihuahua to a Great Dane, there is an incredible amount of variety among dog breeds. But all breeds belong to a single species, so scientists have studied the breeds to better understand the workings of evolution.”

Evolution of the Dog
http://www.pbs.org/wgbh/evolution/library/01/5/l_015_02.html
“Recent molecular evidence shows that dogs are descended from the gray wolf, domesticated about 130,000 years ago. But if they all share a common ancestor, why do toy poodles and Great Danes seem to have little in common?”

Wolf to Dog: Scientists Agree on How, but Not Where
http://www.nytimes.com/2013/11/14/science/wolf-to-dog-scientists-agree-on-how-but-not-where.html?_r=0
“Scientists have long agreed that the closest living relatives of dogs are wolves, their link confirmed by both anatomy and DNA. Somewhere, at some point, some wolves became domesticated.”
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