Dog Age Guides
Learn About Dog Ages & Breeds
Science-backed guides on dog aging, breed lifespans, and how to understand your dog's life stage.
How Old Is My Dog in Human Years? A Complete Guide
The definitive guide to converting dog age to human years for every breed and size. Includes a breed comparison table and life stage guide.
Is the 7-Year Rule a Myth? The New Science of Dog Aging
The 7-year rule is outdated. New research — including the epigenetic clock — shows how dogs really age, and why modern calculators give different results.
Human Years vs Dog Years: A Comprehensive Conversion Chart
A complete, bookmarkable conversion chart for every dog age from 1 to 15, plus small vs large breed comparisons side by side.
How Old is 1 Human Year in Dog Years? The Critical First 12 Months
1 human year in dog years is closer to 15 — not 7. Here is what really happens during your dog's remarkable first 12 months of life.
Dog Years vs Cat Years: Why Do Cats Live Longer?
Cats and dogs age very differently. A full comparison with a cat years to human years chart and the biology behind why cats outlive most dogs.
Does Size Matter? How Breed Size Changes the Dog Age Equation
A 10-year-old Great Dane is far older than a 10-year-old Chihuahua. Here is how size shapes the entire dog age equation — and what it means for care.
How to Tell Your Dog's Age if You Rescued Them
No birth records? Learn how to estimate your rescue dog's age using teeth, eyes, coat, and behaviour — then convert it to human years.
Golden Retriever Age in Human Years — Year by Year Chart
A complete year-by-year breakdown of Golden Retriever aging, from playful puppy to wise senior, with health milestones at each stage.
Labrador Retriever Age in Human Years — Life Stage Chart
America's most popular breed, broken down by age in human years. Find out what stage of life your Lab is in and what to watch for at each milestone.
Why Do Small Dogs Live Longer Than Large Dogs?
The fascinating biology behind why Chihuahuas routinely outlive Great Danes by nearly a decade — and what it means for how we calculate dog age.
Is 1 Dog Year Really 7 Human Years? The Truth
The 1:7 rule is one of the most persistent myths in pet ownership. Where did it come from, why is it wrong, and what is the accurate method?