Meet the Asian carp of dry land:
In southern states like Texas, backyard encounters with feral swine have become routine. The pigs — ill-tempered eating machines weighing 200 pounds or more — roam city streets, collide with cars, root up cemeteries and provide plot lines for reality TV shows like “Hog Hunters.”
But the pig wars are moving north. In Michigan, New Hampshire, New York, North Dakota, Ohio, Oregon and Pennsylvania — states where not long ago the only pigs were of the “Charlotte’s Web” variety — state officials are scrambling to deal with an invasion of roaming behemoths that rototill fields, dig up lawns, decimate wetlands, kill livestock, spread diseases like pseudo-rabies and, occasionally, attack humans.