There is no direct equivalency between the age of a human and a dog. While both humans and dogs age, they do so at different rates. Dogs mature and age more quickly than humans, so it would not be accurate to equate a 3-year-old human with a specific age in dogs. The general rule of thumb is that one dog year is often estimated to be equivalent to about 4-7 human years, but this can vary depending on the dog's size and breed.
