The connection between human and dog runs deep. Early signs of domestication date back to 33,000 years ago and unambiguously domesticated dogs are common in the archaeological record beginning 15,000 years ago. The pairing makes for a striking case in coevolution — no other species has been so thoroughly integrated into human society. Dogs are our sentinels and shepherds, hunting partners and cancer detectors. And more importantly, to those of us who have had dogs in our lives, they are our dearest friends.
Though in many ways we take their presence for granted, the story of this unprecedented interspecies alliance is complex. In recent decades, we have brought the full force of the scientific method to bear on the origins of our beloved companions. Insights from disciplines as diverse as psychology and archaeology, genetics and biology have filled out the pencil sketch of our shared history brushstroke by brushstroke, resulting in a portrait both surprising and familiar.
The Tenderness of Wolves: Wolf to Dog Evolution
Until relatively recently, the tale of how dogs and humans came to be so intimately acquainted took the form of a parable: Early hunter-gatherers adopted wild wolf pups, abducting them from their dens or perhaps fostering them after killing their parents. Raised by humans and selectively bred over generations for docility and tractability, these lupine changelings morphed into something close to the canines we know today. Like most just-so stories, this appealing etiology has disintegrated under scrutiny.
For one, modern studies of wild wolf pups raised in captivity demonstrate that this would have almost certainly been impractical — the hardscrabble lifestyle of early humans was tough enough. Regardless of how much attention, training and affection are lavished on captive-raised wolf puppies, they remain wolves. They don’t take to training well and are in constant contest with their trainers for dominance.
