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Science of Canine Aging

The Vet Standard mode follows weight-based guidelines. Data shows that a Chihuahua ages much slower than a Great Dane. Our algorithm adjusts for these metabolic differences.

Dog Aging Chart

DNA Epigenetic Study

The DNA Mode utilizes the 2020 UCSD study on DNA methylation to track cellular aging via a logarithmic conversion:

16 × ln(dog_age) + 31
= Human Age

Which Result is Right?

Vet Standard (Practical)

Best for daily care, nutrition changes, and senior checkup schedules.

DNA Mode (Biological)

Best for understanding how fast your dog's cells mature in early life.

About This Project

DogsYearsToHuman.com was created to bridge the gap between old "rule-of-thumb" myths and modern veterinary science. For decades, people believed that 1 dog year always equaled 7 human years, but we now know that biological aging is far more complex.

Our mission is to provide dog parents with a high-precision tool that considers breed-specific weight classes and the latest epigenetic DNA research. By understanding your dog's true biological age, you can make better decisions regarding their nutrition, exercise, and senior care.

OUR SOURCES

  • • American Animal Hospital Association (AAHA) Life Stage Guidelines
  • • UCSD Jacobs School of Engineering (2020 Epigenetic Study)
  • • AVMA Canine Weight and Aging Research

Why DogsYearsToHuman.com?

We built this tool to replace the outdated "7-year rule" with actual veterinary data. Our goal is to help pet owners understand their dog's life stage so they can provide better senior care, timely checkups, and appropriate nutrition. Every result is calculated using peer-reviewed canine aging research.

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