We have reviewed data from multiple studies to conclude that a breed-based calculator is best. Studies Used to Build Our “Dog Years to Human Years” CalculatorĮstimating a dog’s age in human years is not simple. See this infographic to find out your dog’s age in human years based on size:īut if you don’t know when your dog was born, how can you best estimate your dog’s age? Read our post on “ How Old Is My Dog?” for easy tips to estimate how old your dog really is. To make it a little easier, we have put together this table that translates ‘dog years’ to ‘human years’ for small, medium and large breeds. If your dog is mixed breed or if you don’t know your dog’s breed, the next most important factor to consider is size/weight. If Your Dog is a Mixed Breed, Use “Size” to Estimate Human Years:Īll in all trying to figure out how old your dog is in ‘dog years’ v ‘human years’ isn’t an exact science. If your dog is a mixed breed, a reliable way to convert your dog’s age to human years is to use your dog’s size or weight. Small breeds live as much as 50-80% longer than larger breeds and experience the negative effects of aging later in life compared to large breeds. We have taken these key factors into account in our calculator below: Select your dog's age in years (using the slider): Select breed: Select sex: Select neutering status: Research also shows that neutering status, and, to a lesser extent, sex are important factors to take into account. When estimating how old your dog is in human years, the primary factor to consider is your dog’s breed. Convert Dog Years to Human Years Based on Your Dog’s Breed In reality, our calculator below shows that 45 years old is a better estimate (Chihuahuas have an average life expectancy of 15.5 years). For example, a 10-year-old male neutered Chihuahua would be 70 years old using the 7x rule. However, this 7x ratio is NOT true for most breeds. Many people think that a dog year is equivalent to 7 human years. Studies Used to Build Our “Dog Years to Human Years” Calculatorĭon’t Use the 7x Rule to Calculate Your Dog’s Age in Human Years.If Your Dog is a Mixed Breed, Use “Size” to Estimate Human Years:.Convert Dog Years to Human Years Based on Your Dog’s Breed.Don’t Use the 7x Rule to Calculate Your Dog’s Age in Human Years.“I have a six-year-old dog - she still runs with me, but I’m now realizing that she’s not as ‘young’ as I thought she was,” Ideker is quoted as saying.
Researchers also believe that observing changes in the methylation patterns before and after the use of anti-aging products could help veterinarians make more informed decisions in terms of diagnostics and treatment.Ī graphic in the study makes the age comparisons intuitive and provides some helpful context for dog owners, including the scientists themselves. The new formula “is the first that is transferable across species,” and scientists plan to test their findings on other dog breeds to study the impact of longevity on their findings, according to a release. The rate of aging decreases after dogs turn 7. “This makes sense when you think about it - after all, a nine-month-old dog can have puppies, so we already knew that the 1:7 ratio wasn’t an accurate measure of age,” lead author Trey Ideker is quoted as saying.īased on the study, a one-year-old dog compares to a 30-year-old human, a four-year-old dog to a 52-year-old human. Tracking molecular changes in the DNA of Labrador retrievers, and in particular “the changing patterns of methyl groups” in their genome, according to a release, the study shows how dogs age at a much faster rate than humans early in their lives, then slow down after reaching maturity. Researchers at the University of California San Diego School of Medicine have developed a new formula that takes into account that variance. And that’s because the scientists behind a new study say dogs and humans don’t age at the same rate. How do you compare a dog’s age to that of a person? A popular method says you should multiply the dog’s age by 7 to compute how old Fido is in “human years.”īut new research published Thursday in the Cell Systems journal debunks that method.
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