For centuries people have believed dog's age seven times faster than humans, but according to experts, that simply isn't true.

For years it was believed that one human year equated to seven years in a dog's life.

Throughout time many have questioned the validity of this claim, and experts are now saying once and for all that it's untrue.

Different breeds of dogs age at different rates, and some are known for their longevity compared to others.

In 1953, a scientist determined that canines don't mature at the same rate their whole lives. Instead, they mature much faster than us, aging around 15 human years in their first year, and then slowing down to roughly 5 human years every year after that.

It was then determined that the first year of a dog's life aged it to approximately 15 years old in human years, but afterwards the aging process slowed down.

Therefore, on average, one human year equates to four years in a dog's life.

Even that science is nuanced, because larger dog breeds have shorter life spans than smaller breeds.

While no definitive answer has been given on how to tell a dog's age, it's clear the seven to one ratio is incorrect.

How many years it will take until that myth goes away is equally undetermined.