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What is Average Size Of A North American Porcupine?

April 5, 2026

Quick Answer

The average size of a North American porcupine is approximately 25-40 pounds and 20-27 inches in length, including its tail.

Physical Characteristics

North American porcupines have a stocky build and a rounded body, with short legs and sharp claws for climbing and defense. Their distinctive feature is the presence of around 30,000 to 40,000 sharp, barbed quills on their back, sides, and tail, which serve as a defense mechanism to deter predators. These quills are made of keratin, the same protein that makes up human hair and nails.

Habitat and Distribution

Porcupines inhabit a variety of environments, including forests, mountains, and deserts, in the western regions of North America. They are typically found in areas with rocky outcroppings, as they often climb trees to escape danger or to forage for food. In terms of specific distribution, they can be found from British Columbia, Canada, to the western United States, including states such as Washington, Oregon, California, Nevada, Utah, Arizona, New Mexico, and Texas.

Hunting Considerations

When hunting porcupines, it’s essential to use caution due to their defensive quills. Hunters should always wear protective gear, including gloves, a face mask, and safety glasses. The best time to hunt porcupines is typically during the spring and fall, when they are more active. It’s also crucial to follow local regulations and obtain the necessary permits before engaging in porcupine hunting. Effective hunting strategies include using a combination of tracking skills, camouflage, and calling techniques to locate and approach porcupines.

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