Skunks can dig burrows, but they rarely bother when easier options exist. These animals are opportunists at heart, far more likely to move into an abandoned groundhog hole, crawl under a porch, or squeeze into a rock crevice than to start excavating from scratch. When they do dig, they tend to modify or expand an existing hole rather than create one from nothing. Where skunks make their dens depends on the species, the season, and whether they are male or female, with choices ranging from dense cactus thickets to the crawl space beneath a suburban shed.
Built for Digging, But Happily Lazy About It
Skunks belong to the family Mephitidae, and their body plan gives them the tools for underground work. Animals classified as semifossorial, meaning they spend part of their lives underground without being full-time burrowers, tend to have short, sturdy limbs with large muscle-attachment areas and elongated claws.1PubMed. Postcranial morphology and the locomotor habits of living and extinct carnivorans Skunks fit this profile. Their front claws are noticeably longer than their rear ones and well suited for scratching through soil, tearing apart rotting logs, and flipping over debris to find grubs. Those same claws let them widen a burrow entrance or clear out a collapsed tunnel when the need arises.
Despite having the equipment, skunks are not prolific diggers in the way pocket gophers or badgers are. Researchers studying plains spotted skunks found that one frequently used burrow system had likely been excavated originally by a pocket gopher, then taken over and modified by the skunk.2Southeastern Naturalist. Examination of Plains Spotted Skunk (Spilogale interrupta) Burrow Systems The skunk essentially inherited a ready-made tunnel network and adapted it. This pattern shows up across skunk species: they are renovators, not builders. When a camera trap in North Carolina captured an eastern spotted skunk actively excavating a den site in 2019, researchers noted it was the first recorded footage of that behavior for the species.3Southeastern Naturalist. Burrow Excavation by an Eastern Spotted Skunk and Visitation by a Long-Tailed Weasel The fact that self-digging was notable enough to warrant a published field report tells you how uncommon it is compared with the habit of simply moving in somewhere else.
The Range of Den Types Skunks Actually Use
If you picture a skunk den, you probably imagine a neat little hole in the ground. That is one possibility, but the real list is surprisingly long. Skunks use underground burrows dug by other animals, natural cavities beneath tree roots, rock piles and crevices in stone outcroppings, hollow logs, dense brush piles, and human-made structures like sheds, porches, foundations, and barns. Some spotted skunks have been documented denning in standing dead trees or in thick tangles of vegetation above ground.
A study of striped skunks on the Canadian prairies found that in autumn and winter, all skunks strongly preferred buildings as den sites.4Canadian Journal of Zoology. Local- and landscape-level den selection of striped skunks on the Canadian prairies The attraction is straightforward: buildings offer insulation, protection from wind and precipitation, and often have gaps or crawl spaces that are just the right size for a medium-bodied carnivore. In rural and suburban landscapes, human structures are some of the most thermally stable shelters available, which is why so many people discover skunks under their decks when the weather turns cold.
Underground burrows and rock piles come into heavier use at other times of year, as discussed below. The point is that skunks are not committed to any single den type. They match the shelter to the situation, and their willingness to use almost any covered space is a big part of why they thrive across such a wide geographic range.
How Spotted Skunks and Striped Skunks Differ
North America has several skunk species, and their denning habits are not interchangeable. The most widespread are the striped skunk and the various spotted skunk species (eastern, western, and plains). When researchers in west-central Texas compared western spotted skunks and striped skunks living in the same area, the differences were clear. Spotted skunks strongly favored dens surrounded by dense mesquite, shrubs, and prickly pear cactus. Striped skunks used those habitats too but were also comfortable in more open areas with less overhead cover.5Journal of Mammalogy. Denning Ecology in Sympatric Populations of Skunks (Spilogale gracilis and Mephitis mephitis) in West-Central Texas
The researchers concluded that spotted skunks are more specialized den-site selectors. Their dens were in more uniform habitat types, clustered in patches of thick vegetation that provided concealment. Striped skunks, by contrast, were generalists willing to den in a wider variety of settings. This matters because it means spotted skunk populations may be more vulnerable to habitat loss. If the dense brush and cactus patches they depend on get cleared for agriculture or development, spotted skunks lose their denning habitat in a way that striped skunks, with their anything-goes approach, do not.
A separate study of eastern spotted skunks in the Appalachian Mountains added another layer: den selection for spotted skunks is not just about habitat structure but also about weather conditions and the individual’s reproductive status.6Ecosphere. Redundancy analysis reveals complex den use patterns by eastern spotted skunks, a conditional specialist A pregnant female might choose a different type of den than a non-breeding individual, and den preferences shift with temperature and precipitation. The term researchers used was “conditional specialist,” meaning the spotted skunk is selective about dens, but the specific thing it selects for changes depending on what is going on in its life and in the weather.
Seasonal and Sex-Based Shifts in Den Selection
Skunk denning is not a fixed behavior. The type of den a skunk chooses in January can be completely different from what it picks in June, and males and females diverge in their preferences during the warmer months. On the Canadian prairies, the seasonal pattern was pronounced. During autumn and winter, both sexes chose buildings when they could find them. But in spring and summer, females shifted to underground burrows and rock piles, while males gravitated toward aboveground retreats.4Canadian Journal of Zoology. Local- and landscape-level den selection of striped skunks on the Canadian prairies
The female preference for underground dens during the warm season almost certainly ties to reproduction. A mother skunk giving birth and raising kits needs a den that is secure from predators, thermally buffered, and enclosed enough that young kits cannot wander out before they are ready. Burrows and rock crevices meet those criteria better than a loose brush pile or a gap under a deck. Males, who have no parental duties after mating, are free to use lighter, less secure shelters. This sex-based split means that if you are seeing a skunk emerge from a ground burrow in spring, there is a good chance it is a female, possibly with a litter underground.
Why Skunks Switch Dens So Often
One of the more surprising aspects of skunk denning is how frequently they move. A radiotracking study in northeastern Kansas found that striped skunks used a rotating series of dens rather than sticking with one home base. On average, a skunk stayed at a given den for only about two days before moving on to the next.7Journal of Mammalogy. Comparison from Radiotracking of Movements and Denning Habits of the Raccoon, Striped Skunk, and Opossum in Northeastern Kansas The same study found that each well-situated den was used by many different individuals, so these shelters function more like shared neighborhood rest stops than private homes.
Why bother switching so often? There are a few likely reasons. Parasites such as fleas and ticks build up in a den the longer it is occupied, so rotating dens keeps the parasite load down. Frequent movement also makes it harder for predators to learn where a skunk sleeps. And because skunks are foraging widely each night, it can simply be more efficient to crash at whatever suitable den is closest to where the night’s feeding ended rather than trek back to a single fixed burrow.
The rapid turnover also explains why you might see a skunk under your porch one evening and not again for a week. It has not necessarily been evicted. It is just making the rounds through its collection of dens and will likely come back. A striped skunk’s home range typically contains multiple usable shelters, and the animal cycles among them.
Communal Winter Dens and the Energy Payoff
Skunks are not true hibernators, but in northern regions they become far less active during winter and may stay underground for weeks at a time. During these cold months, striped skunks often den communally, with multiple individuals sharing the same burrow or building cavity. This is not purely social behavior. It is an energy strategy, and the difference in outcomes between solitary and communal winter denning is dramatic.
Researchers who tracked body temperature and fat reserves of striped skunks through winter found that solitary individuals entered short bouts of torpor, a state of reduced body temperature and metabolic rate, an average of about 50 times over a 120-day period. Their body temperature dropped to an average minimum of around 27°C during these bouts, lasting roughly eight hours each. Grouped skunks, by contrast, entered torpor only about six times over the same period, and their bouts were shallower and shorter, with a minimum temperature near 31°C and a duration of about five hours.8PubMed. Energetic consequences and ecological significance of heterothermy and social thermoregulation in striped skunks (Mephitis mephitis)
The bottom-line difference showed up in spring. Grouped skunks emerged from winter with roughly a quarter of their body weight as fat, while solitary skunks came out with less than a tenth. That is a massive gap in energy reserves right when food is still scarce and the breeding season is about to begin. Communal denning, then, is not just about warmth and companionship. It directly affects survival and reproductive readiness. The huddled bodies of denmates act as a collective furnace, reducing each individual’s need to burn fat through torpor.
This helps explain why buildings are so popular as winter dens. A building offers better insulation than most natural burrows, and the interior space of a crawlspace or barn basement can accommodate a group more easily than a narrow tunnel dug by a single rodent. A skunk choosing a winter den is choosing a survival strategy as much as a sleeping spot.
Burrow Sharing With Other Species
Skunks are not always alone in their dens, and the company is not always other skunks. The same camera-trap observation that captured an eastern spotted skunk excavating its burrow in North Carolina also recorded a long-tailed weasel visiting the same den entrance during the seven-day monitoring period.3Southeastern Naturalist. Burrow Excavation by an Eastern Spotted Skunk and Visitation by a Long-Tailed Weasel Whether the weasel entered while a skunk was present or waited for the occupant to leave is unclear, but multispecies use of the same burrow is well documented in wildlife ecology.
Groundhog burrows, in particular, serve as critical infrastructure for many small and medium-sized mammals. When a groundhog abandons a burrow system, it becomes available to skunks, opossums, rabbits, foxes, and others. In suburban environments, a single well-placed groundhog hole can see a revolving door of species over the course of a year. Skunks benefit from this dynamic because they get access to sophisticated tunnel networks with multiple entrances and chambers, all without doing any of the initial excavation themselves.
The Kansas radiotracking study found that individual dens were used by many different animals, and this included interspecific overlap: raccoons, skunks, and opossums were all documented using the same den sites, though typically not at the exact same time.7Journal of Mammalogy. Comparison from Radiotracking of Movements and Denning Habits of the Raccoon, Striped Skunk, and Opossum in Northeastern Kansas The frequent den switching described earlier may reduce conflict: with everyone rotating through on a different schedule, direct encounters stay rare.
When Skunks Den Near Your Home
Understanding how skunks choose dens has practical value if you are dealing with one on your property. The most common scenario is a skunk denning under a porch, deck, shed, or low concrete stoop. These structures mimic everything a skunk looks for: overhead protection, a tight entrance that larger predators struggle to fit through, and thermal stability. In colder months, the warmth leaking from a heated house through the foundation makes the space under a porch even more attractive.
Knowing that skunks rotate dens every couple of days gives you a window for exclusion. If you confirm a skunk has left for the night, you can install a one-way exclusion door or seal the entry point. Wire mesh buried a few inches into the ground along the base of a deck or porch is the standard long-term fix, since skunks will dig shallowly to get under a barrier that sits on the surface. Their digging ability is real, but shallow: they are not going to tunnel two feet down to bypass properly installed hardware cloth.
The seasonal pattern matters too. If a female skunk has denned under your porch in spring, there is a strong chance she has a litter. Sealing her out at that point means trapping the kits inside, which creates a much bigger problem. Most wildlife professionals recommend waiting until late summer, when the young are mobile and following the mother on nightly forays, before doing exclusion work. By autumn, the family group breaks up and the mother moves on to her winter rotation of dens, which might or might not include your property.
Reducing den attractiveness is simpler than dealing with an active occupant. Skunks gravitate toward areas with cover, so clearing brush, wood piles, and debris from near your foundation takes away the habitat features they look for. Motion-activated lights and sprinklers can discourage initial investigation, though a determined skunk that has already settled in will tolerate a lot of nuisance before it bothers to relocate. The most effective prevention remains physical barriers: seal gaps before any skunk discovers them, and you skip the problem entirely.
Why Spotted Skunks Are the Greater Conservation Concern
The den-selection research carries a conservation message that often gets overlooked. Striped skunks are habitat generalists and population-level winners. They thrive in agricultural landscapes, suburbs, and fragmented habitats precisely because they will den almost anywhere. Spotted skunks, with their dependence on dense vegetative cover and more specialized denning requirements, are in a different position.5Journal of Mammalogy. Denning Ecology in Sympatric Populations of Skunks (Spilogale gracilis and Mephitis mephitis) in West-Central Texas Eastern spotted skunks have declined sharply across much of their range over the past several decades and are now listed as vulnerable or endangered in many states.
One factor in that decline is almost certainly the loss of the kinds of places spotted skunks need to den. When dense brushland and cactus thickets are converted to pasture or row crops, the denning habitat disappears even if foraging habitat remains. A striped skunk can shift to a barn or a drainage pipe. A spotted skunk, based on the available evidence, is less likely to make that switch. Conservation efforts for spotted skunks increasingly focus on protecting and restoring the kinds of structurally complex habitats, with thick ground cover, fallen logs, and rocky outcrops, that provide the den sites these smaller skunks depend on.