My setter got into a porky once out in MT. She was a year old, we thought it was going to be a group of sharpies. She lunged once and got a mouthful of quills, shook her face off in confusion, and I caught her by the collar just as she was in the second lunge for revenge. She's a very sweet dog but that porky really lit a fire in her.
Haven't had a problem since (knock on wood) but if I did I wouldn't hesitate to treat it like snake proofing. Just gotta make sure you take all the same precautions you do with snake proofing. You don't want to give the dog the wrong impression.
