Assertion: spiny dogfish | /r/CapableOf | arch its back
Facets:
value: in defense
type: PURPOSE
Source sentences:
text: If attacked the Spiny Dogfish will arch its back and stick the predator with venom.
text: In defense, the spiny dogfish can arch its back and inject venom into its predators from its dorsal spines.
text: These are used defensively but if captured, the shark can arch its back to pierce its captor.