Whether you're a dog person or not, you've probably heard that one human year is equal to seven dog years. But where did that come from and is it even true?

Today, we're taking a closer look at man's best friend and finding out if they really age that fast.

Sources:

https://www.almanac.com/content/dog-age-chart-dog-years-human-years

https://www.smithsonianmag.com/smart-news/theres-new-better-formula-calculating-dog-years-180973575/

https://www.smithsonianmag.com/smart-news/one-human-year-does-not-equal-seven-dog-years-180952929/

https://www.purdue.edu/newsroom/releases/2019/Q4/calling-all-dogs-and-dog-owners-your-input-is-needed.html

https://www.inverse.com/article/51806-why-dogs-don-t-live-as-long-as-humans

https://www.sciencemag.org/news/2015/12/feature-dog-lives-300-years-solving-mysteries-aging-our-pets

https://www.psychologytoday.com/us/blog/canine-corner/201701/why-do-large-dogs-have-shorter-life-spans-small-dogs

https://www.pedigree.com/dog-care/dog-age-calculator

https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/metabolism

https://www.businessinsider.com/crazy-things-people-used-to-think-were-healthy-2012-9#radioactive-drinks-1