I’ve had a few pigs too.Had a pig once. Started out little, like a small dog. Then it grew, and grew. We kept it in a pen, there was no way you could let it out as it was as strong as an ox. You just couldn't control it. It was never aggressive. Just so strong.
It escaped one day. Someone left the door open. We were able to follow its trail down the road as it was digging up everything with its snout. It eventually went into someones property. If they knew they would have just let us know but they had no idea what was going on. So they called the ranger. Would have been some sort of job getting it into a vehicle. Had to pay $50 to get it out of the pound.
Eventually it got old and had bad arthritis. It needed to be put down so we had to get a vet out. It took forever, the vet said it was given enough drugs to kill a clydesdale horse. That's how big it was. It just wouldn't go down and they had to keep injecting.
Oh you meant real pigs. Sorry, carry on.