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Scientists have developed a new, more accurate way to count a dog’s age in human years. Until now, people have generally believed that one year in a dog’s life equals seven years of human life. But when scientists compared chemical marks on dog and human DNA to see where they matched, they found surprising results about the relationship between dog and human ages. Listen to hear a scientist explain how the new technique works and what the research on canine aging means for dogs and their human friends.
Story Length: 4:27
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