How Old is My Dog in Human Years?

You’ve probably heard of the phrase: 1 dog year equals 7 human years. Although this is a general rule of thumb, it’s not all together true. Dogs mature much quicker than us humans, so it’s not surprising that the first year of your Pup’s life is equivalent to the first 15 of yours.

There is also variation within different sizes and breeds of dogs. Generally, smaller dogs mature quicker than larger dogs, and they tend to live longer. It is not uncommon for a Chihuahua to live upwards of 16 years, whereas an Irish Wolfhound has a lifespan of approximately 6-8 years.

So why is there such a variation in life expectancy between breeds?

Scientists don’t have a definite answer to this question, but there have been studies investigating this. German biologist Cornelia Kraus published a study in The American Naturalist, which indicates larger dogs may age at an accelerated rate compared to their smaller counterparts. It is almost as if their “life unwinds in fast motion”.

We’ve put together a chart to help you figure out how old your dog is in human years:


How old is your dog in human years? Let us know in the comments below!

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