Bob,
Up here in Michigan we don't have near the numbers of boar you do in Texas but they are spreading. About 5 years ago while spotting the woods behind me across the river I seen what looked like a bulldozer on a full run from left to right. Took a while to decide it had to be a hog, here in a county our Dept Nat Resources said at the time they weren't in. Year later a Deer hunter shot one a couple miles away. At the time I seen it every county around me was marked as reported sightings and or kills.

On the West side of the State near Muskegon in 2007 friends of my cousins had been chased in to their house by a big one. 2 years later 2009 while having dinner it came back in their yard. They got it and 3 smaller ones. The big one weighed 514 Lbs and measured 6' 3" from snout to rump. They had to drag it with their 4 x4 . He worked for the local paper, it became known as 'Hogzilla'.

Also that year a call came in to the police and game wardens of a hog attacking a truck parked on the side of the road. This was north but not far from the kill above. They killed it weighing 630 Lbs.

I still have a old link to the story but the main picture is gone:
Hogzilla: Local couple slays four feral pigs, including 514-pound beast - mlive.com

I'm sure no big deal to you, just thought I'd share. Up here you hear guys just sorta hee haw about hogs. I've passed on stories told to me from friends from Alabama about people getting killed in their backyards. Most (not all) but most up here are in for some hurt if these hogs aren't thinned.