For decades, we believed that one dog year equals seven human years. Recent research from UCSD suggests the calculation is much more complex, involving DNA methylation changes.
Dogs age incredibly fast in their first two years. A 1-year-old dog is roughly equivalent to a 30-year-old human! After age two, the rate of aging slows down significantly.
This means a 10-year-old dog isn't "70"—they are actually closer to 60 or 65 depending on their size. Large breeds tend to age faster than small breeds. Want the exact number for your pup? Try our Pet Age Converter.