The eternal linguistic struggle of scientists! Three porcupines, three spellings - "porcupane," "porcupene," and "porcupyne." It's like the scientific naming convention went on vacation and left us with this delightful mess. Even biologists who can memorize the Latin names of 500 species still Google "porcupine" every single time they write a paper. Nature might be precise, but English spelling certainly isn't!