Common wisdom has long held that each dog year is equivalent to seven human years. But a new equation developed to measure how a dog ages finds the family pup may be a lot older than we realize.

Trying to figure out your dog’s age in human years? People used to say just multiply by seven. A new study says that is not accurate. Researchers at the University of California San Diego School ...

Scientists have come up with a new formula to calculate a dog's age in human years — and it is much more complicated than multiplying its real age by seven. Well, a new study suggests it's a ...