I raised two feeder pigs together one barrow and one gilt. I butchered the barrow about three weeks ago because he was bigger than the gilt thinking she would be fine by herself for awhile while she fattened up some more.
This past weekend she started breaking out of her pen constantly and no amount of reinforcement would keep her in. I moved her to a stall in the barn and she quickly broke the door hinges in two! Then took off into the neighbors field.
I went to the house to gather reinforcements (read teenage child) and while I was there I grabbed the gun because worst case scenario if we couldn't pen her up we would butcher her then and there.
We barely started looking for her and she started to full on charge me. I yelled at her to stop a couple times and she was not going to stop. luckily I had the gun with me and was able to shoot her just 3 feet from me.
The lesson I learned here was that pigs truly do get lonely and
should not be raised alone. I think what happened was she came into heat and went looking for a mate. Always be vigilant around grown pigs most of the time they are docile but have the potential to be dangerous.