VIDEO | by GeoBeats

Scientists Study Intelligence Behind Porcupine Quills

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VIDEO DESCRIPTION:
Porcupines have a unique defense method that they are famous for: sharp quills that are an effective deterrent against predators.Scientists ...
have discovered that porcupine quills have microscopic barbs that make it easier for the quill to penetrate flesh, and also make it harder to pull the quill out.
Posted: 12/12/2012 | Views: 4,260 | Duration: 01:15
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