If you dream of a porcupine, it suggests you may find yourself resistant to fresh opportunities and guarded toward new people entering your life, keeping others at a distance with a cold or prickly exterior. For a young woman, dreaming of a porcupine can signal anxiety or unease about a romantic relationship. If the porcupine in your dream is dead, it signals that you are letting go of old grudges and negative attachments that have been weighing you down.