There are other quills under the skin which will have to be removed by surgery. The quills are inside the mouth as well, Acer must have bitten down on the Porcupine, as the quills were through the tongue, lips and into the roof of the mouth. They were also in his gums. You can see how swollen Acer's lips are, even with most of the porcupine quills pulled, there are quills under the skin. The quills on the abdomen were the ones that caused the complications.
Porcupines have strong, thick tails which they can slap against an antagonist.
We think that these quills were driven deep by a strike from the Porcupine's tail. All Rights Reserved.