Take the number you derived in Step 1 and multiply it by 16 and then add 31.

Enter your dog’s age in a scientific calculator to determine the natural logarithm of your dog.

From the data collected, researchers came up with a formula to determine your dog’s age that’s comparable to human age.įormula: The study matched the methylation profiles of Labrador retrievers between 4 weeks old and 16 years old with that of humans. Essentially, the process aligns the timing of physiological growth milestones between the two species. This process is called methylation which allows for the tracking of biological growth and development of both humans and canines.īy measuring the methyl group accumulation in the DNA molecules over time, researchers can calculate the speed at which dogs and humans are ageing. As humans and dogs age, methyl groups attach to their DNA. Researchers believed that they found a more accurate way of calculating a dog’s age by taking into account the evolutionary changes in both humans and dogs. William Fortney, a vet at Kansas State University, suggests that the 7:1 ratio may have been a marketing ploy to educate people on how ageing is quicker for canines compared to humans so that they are encouraged to bring their dogs to the vet at least once a year. This shows that the old formula is more of a random thing and not rooted in science. Take the case of the world’s oldest dog who lived for 29 years, which is equivalent to 203 human years. If the ratio is true, it would support the idea that humans can live for hundreds of years, which is not the case. No one knows where the 7 to 1 ratio originated from but an inscription in Westminster Abbey in 1268 seem to indicate a calculation based on a 9 to 1 ratio.Īlthough 7:1 ratio is widely used, it does not reflect the reality of short life span of humans. The “dog years rule” is based on the myth that every year a dog spends in this world is equivalent to seven years for a human. One Human Year is Not Equivalent to Seven Dog Years Find out how old your dog is in human years using the new formula.

Researchers have found a new way to convert dog years to human years. This has been the universal formula used for many years, but it turns out it’s not as accurate as everyone thought it was.

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All Husse feeds, treats and supplements are made only from the highest quality, carefully selected ingredients. Husse's main goal is to promote a healthy lifestyle for animals. Husse is a Swedish producer of food for dogs, cats and horses with over 30 years of experience on the market. Husse - Swedish food for dogs, cats and horses

2 dog years to human years