Assertion: hedgehog's spine | /r/HasProperty | stiff hollow hairs
Facets:
Source sentences:
text: The spines of a hedgehogs, are stiff hollow hairs, they are not poisonous or barbed and cannot be easily removed, they fall out naturally when a hedgehog sheds its baby spines and grows adult spines a process called "quilling".
text: The spines of a hedgehogs, are stiff hollow hairs, they are not poisonous or barbed and cannot be easily removed.