15 Fascinating Facts About Groundhogs

A lot of us probably don’t give much thought to groundhogs until February 2 rolls around each year, but here are some things you might not know about these critters whose shadows, according to Groundhog Day legend, predict how much longer winter will last – and why it’s bad news either way for the most famous groundhog, “Punxsutawney Phil.”

1. They’re called whistle-pigs.

Groundhogs are also called whistle-pigs (for the high-pitched warning sound they make), ground beavers and woodchucks. Incidentally, the name woodchuck has nothing to do with wood. It’s derived from the Native American word “wuchak,” which means “digger.”

2. They’re essentially giant squirrels.

They’re rodents (marmots) that are very closely related to squirrels. ”They are giant ground squirrels is what they are,” Richard Thorington, curator of mammals at the Smithsonian National Museum of Natural History, told National Geographic.

3. They live in giant burrows with several “rooms”…

Groundhogs build huge burrows for themselves that can be as long as 66 feet. These homes have multiple levels with several “rooms” and exits. “They have a burrow for hibernating, and then they have another section of the burrow that’s more like their summer home where they can come out more easily,” Stam Zervanos, a retired Pennsylvania State University biology professor, told National Geographic.

4. …Including separate “bathrooms.”

Just like our homes, the burrows have separate “bathrooms” in which groundhogs relieve themselves.

5. They may build multiple burrows.

It seems like a lot of work, but groundhogs may build more than one burrow. They can move around from burrow to burrow, but most stay in the same territories every year.

6. They’re climbers.

Groundhogs can climb trees to escape from predators like dogs, wolves and coyotes.

7. They have good taste in food.

Although they weigh less than 14 pounds, groundhogs can eat over a pound of vegetation every day. As for their diet, groundhogs are gourmets. “They’re selective,” Thorington told National Geographic. “They’ll go for your best cabbages and best foods that you have out there.”

8. Farmers aren’t big fans of groundhogs. 

For this reason, farmers are no fans of these critters. Not only do groundhogs eat the best of their crops, but tractors can easily break an axle driving over their burrows.

9. Groundhogs are not social butterflies.

They prefer to be alone, and that includes moms. “The mother nurses the young, and then shortly after they’re weaned, they tend to go off on their own,” Thorington said, adding that groundhogs are “about as asocial as you can get.”

10. They greet each other with Eskimo kisses. 

According to Scientific American, one groundhog touches his or her nose to the mouth of the other groundhog.

11. Groundhogs hibernate from late fall until early spring.

Males wake up early to check out their territory for a mate, “and there’s some competition for that territory,” Zervanos told National Geographic. “They try to defend that territory, and they go from burrow to burrow to find out if that female is still there.” Once a male finds a female he can mate with … nothing happens. He returns to his burrow and goes back to sleep for a month or so.

12. Their mating season lasts only 10 days.

They mate in early March. Thanks to their natural good timing, groundhogs are able to stop hibernating just in time to produce more groundhogs.

13. The Groundhog Day tradition originated in Europe.

In Europe, other animals predicted how long winter would last. “When the Europeans came over here, they didn’t have any hedgehogs or badgers to lay the blame on, so I think the groundhog got it by being here and being a good size,” Thorington said.

14. Groundhog Day isn’t much fun to celebrate for “Punxsutawney Phil” in Pennsylvania.

Instead of being allowed to hibernate, the chosen groundhog is put on a display in a local library. On February 2, he’s subjected to a stressful parade and news conference.

15. A prior tragedy was fatal for a famous groundhog. 

During a Groundhog Day celebration in New York City in 2014, Mayor Bill de Blasio dropped Chuck, a famous groundhog from the Staten Island Zoo. Chuck died from his injuries. This seems like a really good reason to drop the use of live animals on Groundhog Day in Pennsylvania, New York and everywhere else, doesn’t it?

Photo credit: thepiper351


Kelsey S
Kelsey S4 months ago


Lisa M
Lisa M4 months ago

They are precious!

Lisa M
Lisa M4 months ago

Thanks for sharing!

One Heart i
One Heart inc4 months ago


David C
David C4 months ago


Paola S
Paola S5 months ago

thanks for sharing

Jan S
Jan S5 months ago

Thank you

Leanne K
Leanne K6 months ago

The american version of our wombats..

Carole R
Carole R6 months ago

Groundhogs are so cute. We have a family under our back porch. They live there quite happily.

June M
June M6 months ago

Thanks for sharing Laura