Modern North American porcupines are at least twice the size of their southern cousins and have stronger jaws. But how long have they looked that way?
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The team found evidence of about 50 lions that had been injured or killed by porcupines since the 17th century.
Tiny barbs on porcupine quills are what help the quill spenetrate flesh. The barbs are similar to the edge of a serrated…
