Tag Archives: porcupine facts

Porcupine Quills are Just Extremely Enlarged Hairs

A porcupine’s quills are just extremely enlarged specialized hairs that have unusually (compared to other mammals) thick layers of keratin, which is the main structural component of hair and finger nails, among other things.  These thick layers of keratin make porcupine quills extremely rigid and good for poking things. A Cat’s whiskers are also just specialized hairs.  With cats, these […]

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