They also eat some wood. C. Porcupines cannot shoot their quills. Porcupines cannot shoot their quills. The porcupine must slap the attacker with its tail. Quills are loosely attached and, once embedded in an animal, will work their way in deeper.
Quills have barbs on one end.
False Black bears in some areas do not hibernate all winter. Black bears are not true hibernators. They will go into a deep sleep for a few months, but are not completely dormant. They can rouse from their sleep and walk around. All of the above.