Dogs Have Been Our Companions Far Longer Than We Ever Realized
For thousands of years, dogs have trotted alongside humanity through every major chapter of history, but new research suggests this bond stretches back far deeper into the past than scientists previously understood. Groundbreaking genetic studies have now identified the oldest known dog on record, an animal whose remains date back approximately 15,800 years. The findings are reshaping how researchers think about the origins of domestication and the profound, ancient connection between humans and their canine companions.
The oldest known dog was identified through bones recovered at Pinarbasi, a rock shelter site in Turkey that was once used by ancient hunter-gatherers. According to researchers, this animal predates the previous oldest genetically confirmed dog by around 5,000 years, a discovery that places domestic dogs firmly in the human story long before farming or settled civilization took hold. The findings were presented in two separate scientific papers published simultaneously in the journal Nature.
William Marsh, a postdoctoral researcher at the Ancient Genomics Laboratory at the Francis Crick Institute in London and one of the lead authors of one of the studies, explained that DNA evidence points to dogs being present across various locations in western Eurasia at least 18,000 years ago, already genetically distinct from wolves by that point. “We assume that dog and wolf populations diverged much earlier, probably before the Last Glacial Maximum, so more than 24,000 years ago,” Marsh said, adding that “there is still a large degree of uncertainty” surrounding that estimate.
To conduct the largest study of its kind, geneticist Anders Bergstrom of the University of East Anglia in England and his team developed a new method for genetically distinguishing wolves from dogs among 216 ancient remains spanning from 46,000 to 2,000 years ago. Those remains were drawn from sites across Belgium, Denmark, France, Germany, the Netherlands, Scotland, Sweden, Switzerland, and Turkey. From that massive dataset, the team successfully identified 46 dogs and 95 wolves. Because the skeletons of dogs and wolves in the early stages of domestication were nearly identical, genetic testing is essential for telling them apart in ancient archaeological material.
The oldest dog in Bergstrom’s sample dated to roughly 14,200 years ago and was found at Kesslerloch Cave in Switzerland. Together, the findings across both studies show that dogs were already widespread and deeply embedded in human culture long before the advent of agriculture, overturning the idea that domestication was tied to the rise of farming communities.
Perhaps the most poignant detail to emerge from the research comes from the Pinarbasi site itself, where hunter-gatherers appear to have held their dogs in deep regard. “At Pinarbasi we have burials of both humans and dogs, with dogs being buried alongside people,” said Marsh. There is also evidence that the people at Pinarbasi fed their dogs fish, suggesting a genuine bond of care rather than a purely utilitarian relationship. Gough’s Cave in England, near the town of Cheddar, yielded remains of dogs dating to the same early period alongside human bones that bore marks of post-mortem processing, including what researchers interpret as evidence of cannibalistic funerary practices. Similar modifications, though not definitively linked to consumption, were found on the dog remains at the same site.
The dogs identified from both Pinarbasi and Gough’s Cave appear more closely related to the ancestors of modern European and Middle Eastern breeds, such as boxers and salukis, than to Arctic breeds like Siberian huskies. Beyond companionship, ancient dogs likely assisted with hunting and may have served as a kind of early warning system, alerting their human families to approaching threats. Unlike the highly specialized breeds common today, these early dogs would still have looked remarkably similar to the wolves from which they descended.
Despite the significance of the discoveries, major questions remain. Bergstrom noted that “the questions of when, where, and why humans domesticated dogs remain largely unanswered,” adding that the prevailing thinking places the origin somewhere in Asia, though the specific location has yet to be determined. What the research does make clear is that the human-dog relationship is one of the oldest and most enduring partnerships in natural history. “Dogs were there as humans went through major life transitions and as complex societies emerged,” Bergstrom said. He also noted that unlike most other domesticated animals, dogs don’t always have a clearly defined role or purpose, suggesting that “their primary role has often simply been to provide companionship.”
The dog genome is actually one of the most studied of any species, partly because dogs get many of the same diseases as humans, making them uniquely valuable for medical research. The Pinarbasi rock shelter in Turkey has been occupied by humans on and off for thousands of years, making it one of the richest sites for understanding prehistoric life in the ancient Near East. Gray wolves, from which all dogs ultimately descend, once roamed across nearly the entire Northern Hemisphere, from the Arctic tundra all the way down to the Arabian Peninsula.
What do you think about the ancient bond between humans and dogs — share your thoughts in the comments!
