Oregon’s 2,224 porcupine records center hard on the east side of the Cascades. Deschutes County holds about 1,500 of them, with Jefferson and Crook next, and the Oregon Badlands Wilderness Area alone accounts for 104 records, a strong showing for a slow, mostly nocturnal rodent in juniper and ponderosa country.
A rodent that lives by its teeth
The porcupine is North America’s second largest rodent, built for gnawing. Through winter it feeds on the inner bark and needles of conifers, often denning in a rock pile or hollow log by day and climbing to feed by night, while summer brings a greener diet of leaves and forbs. East-side records out of Deschutes National Forest and Crooked River National Grassland fit that conifer-and-juniper feeding pattern, though animals turn up in Coos County forest on the coast as well.
Quills and a patient temperament
Roughly 30,000 barbed quills cover the porcupine’s back and tail, and they detach on contact rather than being thrown. Few predators press the attack, so the animal rarely hurries, which is part of why people encounter it so often at close range. It does not hibernate, and the Oregon calendar stays active in every month, with modest highs in April and again in September as animals roam farther from their dens.
Status in Oregon
USGS NAS does not list the porcupine as nonindigenous in Oregon, and it is treated as native to its mapped Oregon range. The species is not specifically listed under Oregon’s state-level conservation framework and is ranked Least Concern globally by the IUCN.
Full species profile
