Assertion: hedgehog's predator | /r/CapableOf | see their faces
Facets:
Source sentences:
text: Hedgehogs are notoriously shy and use their uniquely strong back muscles to roll up tightly into a ball, hiding their faces and causing their spiny quills to point outwards so that predators can’t see their faces or limbs.
text: As a defense mechanism, hedgehogs roll their bodies into tight little balls when threatened, causing their spines to point outward so that predators are unable to see their faces or limbs.