Aging is a natural part of life. Unfortunately, it happens a whole lot earlier for canines than it does for humans. Read on to find out when your little one is considered a senior dog and 12 common signs your fur kid is getting up there in years. When Does a Dog Become a Senior? First of all, we can toss the myth that one human year is equivalent to seven canine years. Dogs definitely age at a rate faster than humans, but it’s not as simple as the familiar 1:7 ratio. Actually, in the f...