frequently asked questions

Everything you need to know.

The answer varies depending on the dog's life stage. The first human year equals about 15 dog years. The second human year adds another 9 dog years. After that, each human year is typically equivalent to 4 or 5 dog years, heavily dependent on the dog's size and breed.

Dog years are a way to calculate and understand a dog's biological age and maturity level in human terms. Because dogs have much shorter lifespans and mature faster than humans, this metric helps owners provide age-appropriate diet, exercise, and healthcare.

The meaning of 'dog years' refers to the human-age equivalent of a dog's chronological age. It represents the physiological, developmental, and mental stage of a dog compared to a human life, giving pet parents a better perspective on their dog's aging process.

To figure out exactly how old your dog is in dog years, you must factor in their breed size and current age. Generally, the first two years of a dog's life age them to about 24 in human years. After that, they age 4 to 5 years per human year. You can use our breed-specific calculator above to get the exact number.

You can calculate dog years using modern veterinary formulas rather than the old "multiply by 7" myth. The standard method is: Year 1 = 15 years, Year 2 = 9 years, and Year 3+ = 4 to 5 years per year (depending on whether the dog is small, medium, large, or giant).

A 3-year-old dog is generally between 28 and 31 in human years (or dog years). Small breeds are closer to 28, medium breeds are around 29, and giant breeds age slightly faster and are closer to 31 human years at this stage.

When a dog reaches 3 chronological years, they are effectively in their late twenties or early thirties in human years. They are considered fully mature adults at this stage, requiring maintenance adult dog food and consistent exercise.

A 13-year-old dog is well into their senior years. In dog years (human equivalent), a small 13-year-old dog is roughly 68 years old. A medium dog is about 74, while a large or giant breed is considered 82 to over 90 years old.

At exactly 1 chronological year, a dog is approximately 15 years old in dog years (human equivalent). They have passed through the puppy stage and are now considered teenagers, reaching sexual maturity and nearly their full adult size.

No, the idea that 1 human year equals 7 dog years is a long-standing myth. Dogs age much faster in their first two years (reaching about 24 human years by age 2) and then their aging slows down to about 4 or 5 equivalent years for every human year.

The most accurate way to calculate your dog's true age is to use a calculator that accounts for their specific weight or breed. Because small dogs age slower in their later years than large dogs, a flat mathematical formula isn't completely accurate without knowing the dog's size.

The '1 year is 7 dog years' rule was created decades ago simply because the average human lived to be about 70, and the average dog lived to be about 10. While it made for easy mental math, modern science has proven it to be highly inaccurate.

Yes, but only after the dog has reached 2 years of age. The first year of a dog's life is equivalent to 15 human years, and the second year is 9. Only from year 3 onward does a dog age at roughly 4 to 5 dog years for every 1 human year.

A 13-year-old dog is an elderly senior. Depending on their breed, they are between 68 and 90 years old in human terms. At this age, they require specialized senior diets, frequent veterinary checkups, and gentle exercise.