Porcupines are one of our more laid back critter friends. They are herbivores and are the and are the third largest rodent around! They use their quills as self defense when necessary but cannot shoot them at anymore. That is a myth. Interestingly enough though Porcupines have a natural antibiotic in their quills that prevents infection when quilled. Porcupines tend to live a pretty low key lifestyle preferring to stay away from activity and people.