In the feral state, they run in packs and are truly dangerous and destructive.
When I was a kid, I saw a sow go after my dad. It scared me so badly that I don’t like pigs to this day. It wasn’t just the charge, but the horribly loud “roar” that accompanied that frightened me as well as seeing my big ol’ daddy leap the fence w/a single bound!
Today, here, I have had bear tracks on my bck step and cougar in the swamp and I fear them far less than the feral hogs that are now within 20 miles of here.
I’m too old to outrun or carry anything that would stop a charging hog and so have rather limited my solo outdoor roaming as of late.