I read about that, and I think Michigan has made their rules way too broad. In an effort to curb a problem they have overstepped their bounds and ignored the rights of people who don't really want to raise thousands of identical pink pigs, like the commercial operators do.

That said, feral hogs ARE a menace--we have them here in the Ozarks, and they are horrible--destructive of native plants, they eat EVERYTHING, including ground nesting birds, fawns, snakes, turtles, you name it, and they spread disease to commercial hog operations.  If you have ever seen a pasture or woods where they have been rooting, you would be appalled--it looks like a giant rototiller has gone thru.

I attended a seminar on our wild hog problem--one of the presenters said they had 8-10 piglets per litter, and 20 of them would live.  He was kidding of course, but they are prolific, and rebreed quickly to produce more offspring.  He told us that the wild hogs spread some disease (sorry, I don't remember what it was) and if a commercial operation has a case of this disease, the entire state is quarantined--a big financial blow, no matter what you think of commercial hog operations.

Many of the hogs in the Ozarks are offspring of domestic hogs--years ago, folks raised hogs in the woods and would have a roundup a couple times a year to harvest or to earmark their own hogs.  Of course, there were escapes.

Other hogs (Russian wild boars) have been purposefully introduced for hunting (and are still being introduced, according to the Dept. of Natural Resources) or they escaped from private hunting reserves.

Domestic hogs go feral easily, if they escape or are dumped, and over time, the offspring get hairier, darker colored, and babies are striped just like 'wild boars'.  Here, you can shoot them any time, trap them with baited traps, and there are no rules about wasting meat--you can leave the carcasses lay in the woods.  (Boars are practically inedible--rank tasting and smelling meat.)