The well-known 1:7 ratio for dog and human years isn't a reliable way to determine your dog's age, according to researchers, since canines and humans age differently For years pet owners have gone by ...

Scientists have created a graph based on a new formula which estimates a dog's age in "human years." They say their work published in the journal Cell Systems debunks the commonly held belief that ...

For years pet owners have gone by the rule that if you multiply your dog's age by 7, you will get their true age — so if your dog is 8 years old, their physiological age is likely closer to 56.