Assertion: hedgehog | /r/CapableOf | roll their bodies
Facets:
value: into balls
type: OTHER
value: as a defense mechanism
type: PURPOSE
value: into tight little balls
type: TRANSITIVE-OBJECT
Source sentences:
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.
text: When hedgehogs are frightened, they roll their bodies up into balls.