Gerrit Vyn / Porcupine (Erethizon dorsatum) on tundra. North Slope, Alaska, USA. September.
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George Sanker / North American porcupine (Erethizon dorsatum) feeding. Yellowstone National Park, Wyoming, USA. May.
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George Sanker / North American porcupine (Erethizon dorsatum) feeding. Yellowstone National Park, Wyoming, USA. May.
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George Sanker / North American porcupine (Erethizon dorsatum) feeding on riverbank. Yellowstone National Park, Wyoming, USA. May.
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Paul Williams / North American porcupine (Erethizon dorsatum), leaving its rocky den, Vermont, USA. (Habituated rescued individual returned to the wild)
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Paul Williams / North American porcupine (Erethizon dorsatum), leaving its rocky den, Vermont, USA. (Habituated rescued individual returned to the wild)
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Paul Williams / North American porcupine (Erethizon dorsatum), leaving its rocky den, Vermont, USA. (Habituated rescued individual returned to the wild)
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Paul Williams / North American porcupine (Erethizon dorsatum) with a maple syrup tapping tube. These tubes are used to carry sap to large tanks. Porcupines have learned to bite the tubes so that they can drink the li...
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Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)
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Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)
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Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)
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Paul Williams / Bite marks on a tree caused by a North American porcupine (Erethizon dorsatum), Vermont, USA. (Habituated rescued individual returned to the wild)