It's common knowledge that dogs age faster than people. But the conventional wisdom that one dog year equals seven human years is an oversimplified view of how old your dog is in human years. Although a dog's age averages out this way, there is quite a bit of variation. For example, dogs mature more quickly than children in the first couple of years. So the first year of a dog's life is equal to about 15 human years, rather than seven. Source: WebMD

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