Assertion: porcupine | /r/CapableOf | draw up the skin of the back
Facets:
Source sentences:
text: When threatened, the porcupine draws up the skin of the back to expose quills facing all directions, and it then presents its formidable bristling back.
text: When threatened, the porcupine draws up the skin of the back to expose quills facing all directions, and it then presents its formidable bristling back.