Groundhog Day Really About Whether He'll Find Mate

When Punxsutawney Phil sticks his head out on February 2, he's less interested in meteorology than in matrimony.

Illustration of a Bohr atom model spinning around the words Science Quickly with various science and medicine related icons around the text

Join Our Community of Science Lovers!


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


February 2, 2007 -- Groundhog Day Really About Whether He’ll Find Mate

According to legend and virtually every TV station in the country, today groundhogs stick their furry little heads out of the cold winter ground, and look around to see if winter is over.  But wait - a couple of years ago a Penn State researcher took the radical step of observing the groundhogs to see what’s really on their minds when they peruse their surroundings this day.  The researcher studied 32 of the chunky rodents, and found out that the first groundhogs to pop up after a roughly four-month hibernation are all males. And they're not checking the weather.  No, they're looking for female groundhogs, in sort of an exercise in speed dating.  Remember, it's usually really cold in Pennsylvania in February.  So the male critters mark territory, go on a few quick trial dates - and then go back to sleep for another month.  Hey, in freezing temperatures, you woodchuck being awake too.  Weeks later, the groundhogs wake up when it warms up, reconnect with their February valentines, start little groundhog families, and live Happily Ever After.  Just like in the movies.  (Clip from movie Groundhog Day: “Okay, campers, rise and shine, and don’t don’t forget your booties, ‘cause it’s cold out there today!”)

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe