If you haven't gotten acquainted with wild porkers yet, then here's a pic of a hog's lower jaw.

It doesn't take too much imagination to think what kind of damage they can do with tusks like that. The upper jaw has whetting teeth that keep those things razor sharp. They're for ripping and shredding. You can often find a group of hogs by hearing them squeal and grunt when there's a fight going on. They don't have a defined breeding season like deer and such do. They fight when a female goes into heat in their area. Or they fight over food. Or they just fight for no apparent reason. They're experts with their weapons.