We once tried to fatten up a smaller (about 70-80 pound) boar hog that we had trapped. He would only eat enough to stay alive and never really gained any weight. I had named him Wilbur and my wife finally made me agree to turn him loose (we already had plenty of sausage in the freezer from Wilbur's brethren). My hog trapping partner suggested that we castrate him before we let him go so if we came across him later, he would taste better. So, I went to Wilbur and told him that I had some good news and some really bad news. :-0 After we cut him, that poor hog just hunkered down in a corner of the pen and we had to drag him out to set him free. Never did see him again as far as we could tell. Guess he decided he'd had all he wanted of my place.