When it comes to calculating a dog’s age, most go by the well-known formula that "one dog year equals seven human years" – however the truth is, this isn’t accurate. It's not as simple as a one-size ...

One dog year is not equivalent to seven human years, despite widespread use of the ratio for calculating the age of canine companions. Presumably, the ratio is based on the average lifespan of dogs ...

The old way to think about your dog's "human age" — the age in actual years times seven — is wrong. And researchers now have a new formula they think will calculate your dog's age more accurately.