That is a domestic pig that must have gotten out. It is definitely not wild yet. Easiest indicator are the ears. True feral hogs do not have any flappiness in their ears... HOWEVER, it will be feral soon lol...
I agree that this hog was once a domestic, but appears that someone let him out, probably due to the fact that they could no longer afford to feed him, but he is turning wild by the looks of his tail. He will go between 285-300 lbs. I would shoot'em too!