Groundhog (Marmota monax) lives in grassy meadows across North America. It feeds on grass and leaves. Its conservation status is Least Concern.
Fascinating facts about the Groundhog
- Groundhogs can grow as long as a small subway car, measuring between 41.8 and 68.5 cm from nose to tail tip, while their heft rivals a sack of flour at 2 to 6.3 kg. Males tip the scale a bit higher, averaging 3.83 kg year-round, and bulk up to 5.07 kg in autumn before shedding weight after hibernation. These dimensions make them the biggest sciurid in their range.
- A single groundhog burrow can rival a small garden shed, displacing an average of 6 cubic feet (0.17 m³) of earth. Some tunnels stretch a staggering 24 feet (7.3 m) long, with side galleries adding extra length, while the average of eleven studied dens was 14 feet (4.3 m). These extensive networks not only shelter the maker but later become underground apartments for rabbits, foxes, and dozens of other critters, amplifying the groundhog's role as a landscape engineer.
- When groundhogs slip into true hibernation, their bodies become almost ice-cold, dropping to as low as 35 °F (2 °C). Their heart slows to a whisper of 4-10 beats per minute and they breathe just once every six minutes. Over the winter they can shed up to half their body weight, emerging in spring with a thin fat reserve that fuels them until fresh greens appear. This metabolic shutdown lets them survive months without food, a rare feat among mammals.
- Groundhogs act as nature's soil aerators, constantly turning over subsoil and mixing organic matter, which improves water infiltration and nutrient cycling. Their digging creates a network of cavities that later become shelters for a host of species, from cottontail rabbits to river otters, boosting local biodiversity. By reshaping the earth, they help maintain healthy woodlands and plains, earning them the title of a crucial habitat engineer.
- A groundhog couple shares a single den for the entire 31- to 32-day pregnancy, after which the female delivers 1-9 pups, most litters containing 3-5 youngsters. Newborn kits weigh just 26-27 g and stay in the nest for roughly 44 days before venturing out. This rapid early development lets the young become independent by two months.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeNorth America
HabitatGrassy meadows
DietGrass and leaves
About the Groundhog
As the sun rises over the rolling hills and verdant meadows, a stout and indefatigable figure emerges from its underground realm, the groundhog stretching its compact body and shaking off the slumber, its beady eyes scanning the surroundings with a mix of caution and curiosity. With a waddling gait, it moves through the landscape, its short legs carrying it with purpose and determination, as it sets out to forage for the lush grasses and leaves that sustain it. In this tranquil tableau, the groundhog is a master of its domain, a humble yet resilient creature that has thrived in this environment for centuries, its very presence a testament to the enduring power of nature.
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Groundhog photographed on Feravox
