FaunaHub

Porcupine

MammalRodentWild

A North American porcupine (Erethizon dorsatum) covered in quills.

North American porcupine (Erethizon dorsatum).

Image: Lynn Harper, CC0, via Wikimedia Commons.

Overview

Porcupines are large rodents covered in protective quills. Two separate groups share the name: the Old World porcupines of Africa, Asia, and southern Europe, and the New World porcupines of the Americas, which evolved their quills independently. This page is a group-level overview; the North American porcupine (Erethizon dorsatum) is used as a reference. The quills are modified hairs used purely for defence.

Habitat & Range

Porcupines occupy a wide range of habitats depending on the group and species — forests, grasslands, deserts, and rocky areas. New World porcupines, including the North American porcupine, are often tree- climbers of forests, while many Old World porcupines are ground-dwelling burrowers. Habitat and range vary widely between the two groups and among species.

Diet

Porcupines are herbivores, eating bark, leaves, twigs, stems, fruit, and other plant material; the North American porcupine famously gnaws bark and wood, especially in winter. Their constantly growing rodent incisors suit this diet. This page describes general feeding ecology, not care or feeding instructions.

Behavior

Porcupines are generally slow-moving and rely on their quills for defence. Contrary to a common myth, porcupines cannot "shoot" their quills; instead the quills detach easily on contact and can lodge in an attacker. Many porcupines are most active at night. New World species often climb trees, while Old World species tend to stay on the ground. Behaviour varies between the groups and species.

Human Interaction & Conservation

Porcupines are wild animals, not pets, and should not be handled because of their quills and stress sensitivity. Most porcupine species are common, though some face local pressures from hunting and habitat change; conservation status varies by species and should be checked against current sources. This page is educational, not care or veterinary advice.

Appearance & Recognition

Porcupines are stout rodents whose backs and tails are covered in sharp quills — modified hairs — interspersed with ordinary fur. Old World porcupines often have very long, banded black-and-white quills, while the North American porcupine has shorter quills partly hidden in dense fur. Their rounded bodies, small faces, and quill coats make porcupines easy to recognise.

Similar Animals

Porcupines are rodents, like the beaver, guinea pig, and hamster covered on FaunaHub, though the Old World and New World porcupines are only distantly related to each other. They are often confused with the unrelated hedgehog and echidna, which have spines but are not rodents.

More photos of the porcupine

A porcupine in a tree, showing its quill-covered back.

A North American porcupine.

Image: U.S. National Park Service, Public domain, via Wikimedia Commons (NPS).

Frequently Asked Questions — Porcupine

Can porcupines shoot their quills?
No — that is a myth. Porcupines cannot launch their quills. The quills detach easily on contact, so an animal that touches or attacks a porcupine can end up with quills embedded in it, but they are not actively fired.
Are all porcupines the same?
No. "Porcupine" covers two separate groups — Old World and New World porcupines — that evolved quills independently and differ in habits, with many New World species climbing trees and many Old World species living on the ground. This page is a group-level overview.
Are porcupines related to hedgehogs?
No. Porcupines are rodents, while hedgehogs are insectivores in a different group; the spiny echidna is different again. They look similar because several unrelated animals have independently evolved spines for defence.

Sources and further reading

Authoritative wildlife references used for general educational context. Conservation status should always be verified against current IUCN Red List data. External links open in a new tab.