The proof is in images of those animals taken by cameras his urban ecology students plant in groundhog dens around Springfield.

Getting to know groundhogs The groundhog is Southeast Missouri's largest native rodent. Also going by the names woodchuck and whistle-pig, it is a distant relative of the squirrel.

Groundhog Day is just goofy superstition, although it does have a link to reality Walnut Creek reader wonders about the tradition and asks, ‘Where’s our groundhog?’ ...

Groundhog Day is a popular tradition in the U.S. based in a centuries-long legend that a groundhog can predict the weather for the next six weeks. If he emerges from his den and sees his shadow ...

Groundhog French Creek Freddie will emerge from his den to predict whether winter will continue for another six weeks at West Virginia’s annual Groundhog Day.

An as-yet-untagged groundhog known as Brown Barn, one of seven born to Barnadette, whose den is under a barn. When young groundhogs do leave Gilsland Farm, they tend to end up run over or shot.

Groundhogs do not simply crawl into their dens and hibernate, but rather they experience a series of torpor and arousal events throughout winter.

When coyotes move in, groundhog numbers go down, he said. Traditional groundhog dens in open meadows and hayfields aren’t as numerous as they once were, he said.

Groundhogs seem to have a penchant for living near humans. Scott Pitta of Wisconsin Dells said groundhogs liked to den under his decommissioned outhouse.

The groundhog has spoken: Six more weeks of winter, according to Punxsutawney Phil, the world's most famous weather-prognosticating groundhog.