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Scientists develop a dog-aging calculation that works

Dogs reach sexual maturity and old age faster than humans, but the popular idea that one year in a dog's life equates to seven for people has little basis in reality. To gain a clearer understanding of dog ages, a University of California at San Diego-led team looked at DNA methylation as a kind of epigenetic clock in Labrador retrievers, and when researchers matched it to human epigenetic data, they were able to create a formula for comparing dog and human ages.

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