quills are part of a porcupine
crested_porcupine is porcupine. brush_tailed_porcupine is porcupine. porcupette is porcupine. porcupine is rodent. porcupines has quills_for_protection_against_predators porcupine_quills has barbs prehensile_tailed_porcupine is porcupine.