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North American porcupine (Erethizon dorsatum), Amistad National Recrea...
This rodent may have as many as 30,000 quills on its body, including everywhere except on its stomach. Quills are hairs with barbed tips at the end, solid at the tip and base but hollow for most of the shaft. T... More
North American porcupine (Erethizon dorsatum), Amistad National Recrea...
This rodent may have as many as 30,000 quills on its body, including everywhere except on its stomach. Quills are hairs with barbed tips at the end, solid at the tip and base but hollow for most of the shaft. T... More