Why do we celebrate Groundhog Day?
Before we received weather reports from rodents and life lessons from time loops, Groundhog Day evolved for centuries into the bizarre holiday it is today.
THE SHADOW KNOWS: A handler hoists up Punxsutawney Phil on Feb. 2, 2009, after the famous groundhog saw his shadow, thereby predicting six more weeks of winter. (Photo: Carolyn Kaster/AP)
Freas reported on the men's groundhog hunts and barbecues, touting them as members of "the Punxsutawney Groundhog Club." He became so enthralled by local groundhog folklore that he went on to promote Punxsutawney as home to a weather-predicting groundhog, a story he then continued to repeat and embellish year after year. Other newspapers began reporting it, too, and Punxsutawney soon became ground zero for groundhog meteorology, as well as the hometown of world-renowned forecaster "Punxsutawney Phil" (pictured at right).-
"Groundhog," "woodchuck" and even "whistle pig" are different names for the same animal — Marmota monax, the largest species of ground squirrel in North America. - Using only their teeth, claws and sturdy limbs, wild groundhogs dig extensive burrows that can be up to 5 feet deep and 45 feet long.
- The name "whistle pig" comes from their noisy reactions to being disturbed, which include whistling, squealing, barking, chattering and grinding their teeth.
- While most squirrels eat the reproductive parts of plants like seeds and nuts, groundhogs mainly graze on grass and leaves, but they sometimes eat insects, snails and bird eggs, too.
- Groundhogs are one of the few true hibernators, relying entirely on body fat to make it through winter. Their heartbeat slows from about 75 beats per minute to as few as 4, and their body temperature drops from the 90s into the 40s (F).
- An internal biological clock controls when wild groundhogs wake up from hibernation, but their actual emergence from the burrow depends more on daily temperature than intuition.
- Even aside from dedicating a holiday to it, Americans and Canadians have been very good to the groundhog. The species was relatively scarce when Europeans first settled the continent, but as settlers fragmented forests to set up farms and towns, they created more of groundhogs' favorite habitat — the edge between open and woodland areas — while also killing wolves, cougars and other top predators. Although groundhogs thrived and expanded their range, however, they still usually try to avoid contact with people.
- 6 things most people don't know about Groundhog Day
- 5 ways to celebrate Groundhog Day
- Groundhog alternates step into the spotlight
- Happy Squirrel Appreciation Day


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