How old is a 10 year old dog?
When a dog hits the three year mark, he ages 4 years to every 1 human year bringing the ratio to 4:1. So a 10 year old dog is basically the equivalent of a 53 year old human. Using the simple equation, this same 10 year old dog would be 70 years old.
Is 10 years a long time for a dog?
The aging profile of dogs varies according to their adult size (often determined by their breed): smaller dogs often live over 15–16 years, medium and large size dogs typically 10 to 13 years, and some giant dog breeds such as mastiffs, often only 7 to 8 years.