Click here to learn more.
A. The old “dog years” formula (one year of a dog's life is equal to seven years of human life) never really worked for any dog, based on a comparison of the general lifespan of humans vs. dogs. Cats age at a more predictable rate than dogs do, mostly because we don’t see the range of size and body types we do in dogs, but the 1-to-7 formula doesn't work for them either.
Consider two 10-year-old dogs, a Great Dane and a Chihuahua. Under the 1-equals-7 formula, they’d both be considered the equivalent of a 70-year-old person. And while that’s probably not too far off the mark for the Great Dane (10 years for a Dane is indeed near the outer edge of life expectancy), the Chihuahua is likely still acting middle-aged.
But even the Great Dane didn’t match the old formula when he was young. In the first year of his life, he would have attained most of his height, something no human 7-year-old ever does.
It’s more accurate to think of the first year of a dog’s life getting him just over the first big jump of adolescence, with the second year bringing him close to full adult maturity physically, although as in humans, mental maturity may still be on the horizon. From there, it really does depend on the kind of dog in question. I think it’s more important to focus on the individual dog, with the knowledge that size and breeding matter when it comes to aging. Roughly put, you can consider your dog to be a senior citizen at 7 if he’s that Great Dane, but not until 11-plus if he's the Chihuahua.
Like this article? Have a point of view to share? Let us know!
Thank You For Signing Up
for the Petwire newsletter, sending you all the pet news each week directly to your inbox.
Get the latest pet news, tips, tricks, and expert advice sent right to your inbox!
Jonie, a Lab-Pit Bull mix, was found in a
Georgia neighborhood carrying an
appreciative Chihuahua in her mouth.
We talked to the Humane Society and the
ASPCA to get tips on what you can do to
help if you see a pet trapped in a…
Dr. Ann Hohenhaus breaks down the
similarities and differences in the ways
cancer can affect humans and animals.
Begging on cue is an adorable trick in
which your dog balances on his rear and
hind legs with his upper body upright.
The Kooikerhondje is a fun-loving and
intelligent red and white Dutch retriever
who was bred to lure ducks into a…
If the video doesn't start playing momentarily,
please install the latest version of Flash.