Icana is looking sharp for #WorldPorcupineDay, but let's stick to the point. Contrary to popular belief, this por-cute-pine cannot shoot her quills. In fact, quills are just modified hairs made out of keratin, the same substance found in our own hair and fingernails. These spiky, oversized rodents have muscles at the base of each quill that allow them to stand up when the animal is excited or alarmed. #QuillYouBeMine #porcupuns #PorCUTEPine #SanDiegoZoo 📷 Debbie Beals