1. What is the Dog Age Formula?

The logarithmic formula for dog age conversion was developed based on DNA methylation studies. It provides a more accurate conversion than the old "multiply by 7" rule, especially for adult dogs.

2. How Does the Calculator Work?

The calculator uses the logarithmic formula:

Where:

• \( \ln \) — Natural logarithm
• Dog Age — The actual age of the dog in years

Explanation: The formula accounts for the fact that dogs mature quickly in their first years but then age more slowly compared to humans.

3. Importance of Breed Size

Details: Smaller dog breeds tend to live longer than larger breeds. The calculator adjusts the result based on breed size:

• Small breeds (≤20 lbs): ×0.9 (age slower)
• Medium breeds (21-50 lbs): no adjustment
• Large breeds (51-90 lbs): ×1.1
• Giant breeds (>90 lbs): ×1.2

4. Using the Calculator

Tips: Enter your dog's age in years (can include decimals for months) and select the appropriate breed size category based on adult weight.

5. Frequently Asked Questions (FAQ)

Q1: Why not just multiply by 7?
A: The "multiply by 7" rule is inaccurate because dogs mature much faster than humans in their early years but then age more slowly.

Q2: Why do smaller dogs live longer?
A: The reasons aren't fully understood but may relate to growth rates, metabolism, and genetic factors associated with size.

Q3: How accurate is this calculator?
A: It provides a good estimate based on current research, but individual dogs may vary based on genetics, health, and lifestyle.

Q4: Does this work for puppies?
A: The formula works best for dogs over 1 year old. Puppies mature extremely quickly in their first year.

Q5: What about mixed breed dogs?
A: Estimate based on the adult size of your mixed breed dog. If uncertain, choose the size category that seems closest.