RE: southern indiana hogs
10-15 years ago, some wealthy hunters in the Warrick County area (I'm not sure where) brought some European boars in to have a hunt. It was some type of hunt club. The hogs were supposed to be fenced in. They got loose. I remember reading a story about a guy killing two while bowhunting.
Anyhow, I'm not sure if you are supposed to hunt them. But I'm pretty sure that there are some around the Hoosier Forrest.