Wild hogs cause extensive damage to crops, wildlife habitat, contribute to erosion and water pollution, and carry diseases harmful to livestock and other animals as well as humans.  The damage they cause has become more common and widespread during the last fifteen years. They have gone from being present in 15 counties in Tennessee to being present in nearly 80 of a total of 95 counties.  – See more at: https://www.tn.gov/twra/article/wild-hog-regulations#sthash.Ff57k49N.dpuf