the porcupine erithizon dursatum is a large herbivore mammal noted for the barbed quills on its back used for defense and its ability to chew through tree bark in order to get its food

672950002 a wild porcupine erithizon dursatum sits in a tall tree on a national wildlife refuge just outside canadian texas united states

Size: 2734x4091 / 32.0MB

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Mammals: all other mammals