I've only had three incidents in 35+ years of hog hunting, but here they are:

When I was a kid, I was on a buggy hunting with my brother and his neighbors. One of the neighbors shot a big boar in the chest with a 44 Mag. He went down, and when we were about 20 yards away, he got back up - mad. He snorted, pawed the ground and chased all of us up pine trees. Lucky there were trees we could climb.

I was alone, walking thru thick palmetto scrub during archery season, and heard some grunting and blowing. Looked carefully around me and saw the back of a boar over the top of the palmettos. He knew I was around, and was making a lot of commotion trying to scent me. It was probably the biggest pig I've ever seen - a good 350 pounder - and that arrow looked mighty puny. I backed out as quickly and quietly as I could. I was lucky. If he would have got a sence of my direction he would've come at me like a train and I had nowhere to go.

Was walking around very slow and quiet in an area loaded with hog sign. I heard a bunch of racket in the scrubs, and six very small piglets ran out into an open area in front of me, followed by mama. She saw me and instantly turned and charged. I stepped to the side and ducked. She missed my legs by about five feet, sparayed mud everywhere turning around , and came back to try again. I didn't want to kill her because the piglets would have died, so I put a shotgun slug into the mud right in front of her. She backed off and so did I, we had a short standoff, then she grunted and went back to her babies. Get between a sow and her babies, and you're going to have problems.

I'm still hunting them, although not too much with a bow anymore. My wife bought me a Marlin 45/70 Guide Gun for my hog hunting. Puts them down with authority. Thats the kind of excitement that keeps us going back to the woods.