词路径
- entity
- physical entity
- object
- physical object
- whole
- unit
- living thing
- animate thing
- organism
- being
- animal
- animate being
- beast
- brute
- creature
- fauna
- chordate
- vertebrate
- craniate
- mammal
- mammalian
- placental
- placental mammal
- eutherian
- eutherian mammal
- rodent
- gnawer
- porcupine
- hedgehog
下位词
- New World porcupine
- Old World porcupine