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A groundbreaking archaeological study reveals humanity’s profound impact on animal body sizes across millennia. Researchers have uncovered evidence showing how human activities deliberately enlarged domestic animals while simultaneously shrinking wild species over the past thousand years.
Scientists from the University of Montpellier examined over 225,000 animal bones from 311 archaeological sites across Mediterranean France, spanning an unprecedented 8,000-year timeline. The study, published in the Proceedings of the National Academy of Sciences, demonstrates a dramatic shift in animal evolution beginning around 1,000 years ago during the Middle Ages.
For most of human history, wild and domestic animals evolved in sync with natural forces like climate and vegetation. However, the medieval period marked a turning point when human selection became the dominant evolutionary driver. Domestic animals were systematically bred for larger sizes to produce more meat, milk, wool, and labor power.