What You Need to Know About Pet Ageing
The "times 7" rule is a myth: dogs mature exponentially in the first 2 years.
A 1-year-old dog is equivalent to 15 human years; a 2-year-old is equivalent to 24 human years.
Large dogs age faster than small ones after 2 years.
Cats follow a more linear curve: each feline year equals 4 human years after age 2.
# The Scientific Truth About Your Pet's Age
Did you know that a 2-year-old cat already has the maturity of a 24-year-old person? Discover why the rule of multiplying by 7 is a myth. The old myth that "1 dog year equals 7 human years" is an oversimplification. The biological reality is much more fascinating: pets mature at a dizzying speed during their first two years of life, reaching sexual and physical maturity very quickly. After that, this ageing curve flattens and slows down.
# The Science Behind the Calculation
This tool uses the official guidelines of the American Animal Hospital Association (AAHA) and the latest studies on canine DNA methylation to give you the most accurate estimate possible.
| Species | Year 1 | Year 2 | Year 3+ |
|---|---|---|---|
| Cat | 15 human years | 24 human years | +4 years per year |
| Small dog | 15 human years | 24 human years | +5 years per year |
| Medium dog | 15 human years | 24 human years | +6 years per year |
| Large dog | 15 human years | 24 human years | +7 years per year |
| Giant dog | 15 human years | 24 human years | +8 years per year |
# Life Stages: What to Expect?
Knowing your pet's real age helps you understand their medical and emotional needs at each phase.
Puppy / Junior (0 - 1 year)
This is the stage of explosive growth. Their bones grow, their teeth change and their brain absorbs information like a sponge. Vaccination and early socialisation are critical here.
Adult (2 - 6 years)
Physical and mental prime. Their personality is now defined. This is the golden moment to enjoy intense physical activities and maintain their ideal weight to prevent future diseases.
Senior (+7 years)
Grey hairs start appearing on the muzzle and they sleep more. Metabolism slows down. From here, veterinary check-ups should be every 6 months. Watch for arthritis and dental health.