they have a special tactic to hide themselve
The groundhog lives in a den or burrow. They hibernate during the winter. Actually groundhogs may dig as many as six or seven dens taking advantage of the food in the area.
Groundhog Day is celebrated on February 2 in the US and Canada. According to folklore, if a groundhog emerging from its burrow on this day fails to see its shadow, it will leave the burrow, signifying that winter will end soon. If the groundhog sees its shadow, the groundhog will supposedly retreat into its burrow, and winter will continue for six more weeks.
Groundhogs are one of the few species that enter into true hibernation, and often build a separate "winter burrow" for this purpose. This burrow is usually in a wooded or brushy area and is dug below the frost line and remains at a stable temperature well above freezing during the winter months.
Winter is just as long to a groundhog as to us, but supposedly, groundhogs can predict the season changes. According to the legend, if the groundhog on leaving its burrow does not see his shadow, it will leave the burrow , which it means that winter will soon end. If, however, it "sees his shadow" and is frightened, it will go back into the Burrow, meaning that winter will last six more weeks.
Normally just one at a time, with multiple entrances.
The North American Groundhog takes approx. 3.5 minutes to dig a 3 Ft. burrow.
Some animals that burrow in yards include moles, gophers, and groundhogs.
A groundhog lives in the ground in a burrow.
Many animals, such as rabbits, groundhogs, and moles, burrow underground to create shelter, protect themselves from predators, and find food. Burrowing helps them stay safe, regulate their body temperature, and raise their young in a secure environment.
Groundhogs create burrows in the ground by digging and excavating the dirt, which they then push out of the entrance of their burrow. The displaced dirt piles up near the entrance of the hole, creating a telltale mound of soil.
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Most groundhogs live in rocky and mountainous areas. There are also those that are low land creatures. Being one of the few species that hibernate, groundhogs usually build burrows in wooded or brushy areas that is dug below the frost line for them to remain at a stable temperature well above freezing during the winter months.