ByLinda Carroll
Experts believe a new equation developed to measure how a dog ages finds the family pup may be a lot older than we realize. This news contradicts the common wisdom has long held that each dog year is equivalent to seven human years.
Findings from researchers studying chemical changes to canine DNA found that dogs age very quickly during their first five years and much more slowly later on.
Results recently published calculate that a 5-year-old dog would be pushing 60 in human years.
Trey Ideker, the study’s senior author and a professor of genetics at the University of California, San Diego, School of Medicine noted, “Puppies age super quickly. By the time a dog is a year old, at a molecular level, he’s much more like a 30-year-old human. Retrospectively, we did know these things. It didn’t make any sense that the equivalent to a 7-year-old human would be able to have puppies.”
The researchers findings also revealed that dogs, just like humans, have chemical marks on their DNA, called methylation marks, that change with age.
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