What's One Dog Year In Human Years?

What's One Dog Year In Human Years?

You've probably heard that one dog year is equivalent to seven human years. In fact, there's no such thing as a consistent "dog year." Different dogs age at different rates, depending on their breed and size. Dogs also age much more quickly than humans in their first year of life; a dog celebrating his 1st birthday might as well be a teen celebrating his 15th! Larger dog breeds start to age faster than smaller ones at around 6 or 7 (human) years. A 12-year-old small dog has about 64 human years under his belt, whereas a 12-year-old big dog is closer to a 77-year-old human.


Key Facts In This Video

  • 1

    Smaller dogs age less every calendar year than larger dogs, whose lifespans are typically shorter. (0:34)

  • 2

    Camels store fat, not water, in their humps. (1:34)

  • 3

    Elephants are not afraid of mice, though their poor eyesight means that can be startled by quick movements from any animal. (2:34)

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Human Biology


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