Porcupines belong to Wisconsin’s wooded north. Of 588 records, the strongest county showings run through Vilas, Oneida, Forest, Douglas, and Bayfield, with Door County and the central forests around Sandhill Wildlife Area carrying the species farther south. Northern Highland State Forest, the Brule River State Forest, and Whitefish Dunes State Park mark the wooded core of the range.
A slow climber that lives on bark
The porcupine is the second-largest rodent in North America after the beaver, a deliberate climber that braces against trunks with strong claws and a stout tail. Through winter it feeds on the inner bark of hemlock, pine, and aspen, often returning to the same trees until the girdled, stripped patches advertise its presence. Its roughly 30,000 quills, loosely attached and barbed, deter most predators, though the animal cannot throw or shoot them. Its famous appetite for salt draws it to roadsides, cabins, and anything sweated on or painted.
Out of the trees when the green comes up
Porcupines do not hibernate, and Wisconsin counts crest in May and June, when they leave their winter haunts to feed on fresh leaves, sedges, and ground vegetation, and slow-moving animals become easy to spot along trails and back roads. In the cold months they stay close to dens in rock ledges, hollow logs, and root tangles, with piles of pellets below favored feeding trees.
Status in Wisconsin
The porcupine is native to Wisconsin, and USGS NAS does not list it as nonindigenous in the state. It carries no special state-level conservation listing, and the IUCN treats the species globally as Least Concern.
Full species profile
