Ancient Canine Diversity: Insights from Recent Research

Recent studies have revealed that the diversity of dog breeds can be traced back much further than previously believed, with significant variations in size and shape emerging over 10,000 years ago. A comprehensive analysis of 643 skulls from dogs and wolves, conducted by biologist and archaeologist Allowen Evin and her team, indicates that dogs from the Mesolithic and Neolithic periods exhibited a diversity in skull shapes that was already about half as varied as modern breeds. This research, published in the journal *Science*, challenges the notion that the wide range of dog appearances is a recent phenomenon resulting from selective breeding practices that began in the Victorian era.

Ars TechnicaDogs Have Varied In Shape and Size Since the Stone Age, New Study FindsDog diversity emerged thousands of years before modern breeding - studyTime Magazine

The study utilized advanced techniques, including geometric morphometrics, to create digital 3D models of ancient canine skulls. The findings suggest that the first distinctly "dog-like" skulls appeared around 10,800 years ago in northwestern Russia. By the time of the Neolithic period, nearly half of the diversity seen in modern dog breeds was already present. Evin noted, “Some ancient dogs show skull shapes that don’t match any living breed that we have studied,” indicating that these forms may reflect early regional adaptations.

Ars TechnicaDog diversity emerged thousands of years before modern breeding - studyDogs Have Varied In Shape and Size Since the Stone Age, New Study FindsTime Magazine

Archaeological evidence, such as the burial of six dogs in Kazakhstan over 3,000 years ago, highlights the deep-rooted relationship between humans and dogs. Laurent Frantz, a professor at Ludwig Maximilian University of Munich, emphasized that dogs traveled with humans across continents, adapting to various environments and roles, including hunting and herding. This interaction likely influenced the physical characteristics of dogs, leading to the diverse forms observed today.

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While the findings are groundbreaking, some researchers argue that the exact reasons for the early diversification of dog breeds remain unclear. Dr. Cary Ameen from the University of Exeter acknowledged that various factors, including human preferences and environmental adaptations, may have contributed to this diversity, but the interplay of these elements is complex and not fully understood.

Dogs Have Varied In Shape and Size Since the Stone Age, New Study Finds

The research team concluded that dogs serve as a mirror of human history, shaped by shared migrations and evolving societies. They called for further studies to gather more specimens from 25,000 to 11,000 years ago in central and southwest Asia to enhance understanding of canine domestication.

Dogs Have Varied In Shape and Size Since the Stone Age, New Study Finds

• “By about 10,000 years ago, half of the amount of diversity present in modern dogs is already present in the Neolithic,” — Dr. Carly Ameen, University of Exeter

Dogs Have Varied In Shape and Size Since the Stone Age, New Study Finds

• “It’s likely to be a combination of interaction with humans, adapting to different environments, adapting to different types food — all contributing to the kind of explosion of variation that we see,” — Dr. Cary Ameen, University of Exeter

Dogs Have Varied In Shape and Size Since the Stone Age, New Study Finds

• “is they seem to flow more like the technology than the people.” — Laurent Frantz, Ludwig Maximilian University of Munich

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Future research aims to explore the spread of dogs into Southeast Asia and Australia, as well as their roles in ancient human societies. Understanding the evolutionary journey of dogs not only sheds light on their domestication but also on the broader narrative of human-animal relationships throughout history.

Dog diversity emerged thousands of years before modern breeding - study