Ancient DNA Confirms Humans Had Dogs 15,800 Years Ago — Long Before Farming Existed

Two new genetic studies published Wednesday in the journal Nature have identified the earliest-known dog in the archaeological record, dating to approximately 15,800 years ago — roughly 5,000 years older than the previously confirmed oldest domesticated dog, and thousands of years before agriculture existed anywhere on Earth. The findings provide what researchers describe as the first definitive genetic evidence that dogs were an established part of human culture during the Paleolithic period, well within the Ice Age.

The Oldest Known Dog

The earliest dog identified in the new research comes from the Pınarbaşı rock shelter site in Turkey, used by ancient human hunter-gatherers. The animal's genetic material, extracted from bone fragments, dated the dog to 15,800 years ago, according to Reuters, which cited the published Nature papers directly.

William Marsh, a postdoctoral researcher in the Ancient Genomics Laboratory at the Francis Crick Institute in London and co-lead author of one of the two studies, said the DNA evidence suggests dogs were already present in various locations across western Eurasia by approximately 18,000 years ago and were genetically quite different from wolves by that point. "We putatively predict that dog and wolf populations diverged a lot earlier, likely before the last glacial maximum, so before 24,000 years ago," Marsh told Reuters. "Although saying that, there is still a great degree of uncertainty."

At Pınarbaşı, excavations had found both human and dog burials at the same site — with dogs interred alongside humans — and evidence that the people there fed their dogs fish, Marsh told Reuters. A second dog identified in the study, from Gough's Cave near Cheddar in southwestern England, was found in a context associated with ritualized human post-mortem practices including cannibalism as a funerary behavior. "Similar post-mortem modification, albeit not definitively for consumption, was found on the dog remains," Marsh said, as quoted by Reuters.

The Larger Study: 216 Ancient Remains Across Nine Countries

The second study, led by geneticist Anders Bergström of the University of East Anglia, conducted what researchers described as the largest-ever genetic survey of ancient canine remains in Europe. Bergström's team analyzed 216 specimens ranging from 46,000 to 2,000 years old, collected from sites in Belgium, Denmark, France, Germany, the Netherlands, Scotland, Sweden, Switzerland, and Turkey. From that sample, researchers identified 46 dogs and 95 wolves, with the remainder inconclusive, per Reuters.

The oldest dog found by Bergström's team was dated to 14,200 years ago, from Switzerland's Kesslerloch Cave. Those early European dogs were found to share a common origin with dog populations in Asia and elsewhere in the world, indicating that dogs were domesticated in a single event — or a tightly connected series of events — rather than independently on multiple continents, Reuters reported.

Bergström said the findings underline how long dogs have been present across human history. "Dogs have been by our side as humans underwent major lifestyle transitions and complex societies emerged," he said, as quoted by Reuters. "I think it's also interesting that, unlike most other domesticated animals, dogs do not always have very clearly defined roles or purposes for humans. Perhaps their primary role is often just to provide companionship."

Why the Finding Matters

Dogs are the first animal known to have been domesticated by humans — predating goats, sheep, cattle, and cats by thousands of years. Prior to this research, the timing and geography of that domestication remained genuinely contested among scientists, with various proposals placing the event anywhere from 15,000 to 40,000 years ago, and in locations ranging from East Asia to the Middle East to Europe.

The new studies confirm with genetic certainty that dogs were already a global presence alongside hunter-gatherers before agriculture emerged in the Fertile Crescent approximately 10,000 to 12,000 years ago. That means the human-dog relationship predates the entire agricultural revolution, writing, cities, and every civilization that followed. The dog did not emerge alongside settled human society — it was already there, traveling with nomadic hunter-gatherers across ice-age landscapes.

The Pınarbaşı and Gough's Cave dogs were genetically found to be more closely related to the ancestors of modern European and Middle Eastern breeds — boxers and salukis, for example — than to Arctic breeds like Siberian huskies, according to Reuters. The Independent reported that modern European dog breeds broadly, from bulldogs to Labradors, share much of their ancestry with dogs that lived alongside ancient hunter-gatherers in Europe.

What the Dogs Looked Like and Did

These early dogs would not have resembled modern breeds. Having diverged from gray wolves only thousands of years earlier, they likely still closely resembled their wolf ancestors in appearance, according to Marsh and Bergström as cited by Reuters. Their roles with humans may have included assistance with hunting, as sentinels or watchdogs, and companionship. "Unlike the many exotic dog breeds around today, these early dogs still likely closely resembled the wolves from which they descended," the researchers said, per Reuters.

The ability to genetically distinguish ancient dogs from ancient wolves is a significant methodological advance that made this research possible. The skeletons of early dogs and wolves were nearly indistinguishable to the naked eye, meaning paleontologists analyzing bones alone could not reliably tell them apart. Genetic analysis, applied to this large sample for the first time, resolved the ambiguity.

What Remains Unknown

"The questions of when, where and why people domesticated dogs still remain largely unanswered," Bergström said, as quoted by Reuters. "We think it probably happened somewhere in Asia, but more precisely remains to be determined." The two Nature papers represent a major step forward in dating the relationship, but the exact geographic origin and social circumstances of the first domestication event — whether it was one hunter-gatherer band, multiple over a period of time, or something else entirely — are still open questions that future genetic research from Asian archaeological sites may help resolve.

Sources: Reuters (March 25, 2026); The New York Times (March 25, 2026); The Guardian (March 25, 2026); The Independent (March 25, 2026); Phys.org (March 25, 2026). Primary research published in Nature (March 25, 2026).