History of Dog Domestication:
Dog history is really the history of the partnership between dogs (Canis familiaris) 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 12,000 to 30,000 years or more ago: but whether humans had anything to do with that, that question is still debated by scientists.