How were Dogs Domesticated?

Dog history is really the history of the partnership between dogs and humans. That partnership is based on human needs for help with herding and hunting, an early alarm system, and a source of food in addition to the companionship many of us today know and love. Dogs get companionship, protection and shelter, and a reliable food source out of the deal. But when this partnership first occurred is at the moment under some controversy.
Dog history has been studied recently using mitochondrial DNA, which suggests that wolves and dogs split into different species around 100,000 years ago; but humans had anything to do with that, no one really knows. Another recent study suggests that the entire population of dogs today are descended from three females near China about 15,000 years ago: these two competing studies probably represent a reworking of the genetic clock as scientists become more familiar with the process.

Archaeological evidence for dog domestication isn't quite that old. A burial site in Germany called Bonn-Oberkassel has joint human and dog interments dated to 14,000 years ago. The earliest domesticated dog found in China is at the early Neolithic (7000-5800 BC) Jiahu site in Henan Province. European Mesolithic sites like Skatelhom (5250-3700 BC) in Sweden have dog burials, proving the value of the furry beasts to hunter-gatherer settlements. Danger Cave in Utah is the earliest case of dog burial in the Americas, at about 11,000 years ago.