I just posted my suggestion on your page. Hamilton always makes me laugh a little with the word Ham in the beginning for a pig.
From what I understand, Javelina are not pigs. They are their own species and unable to cross breed. Saying that, there are no native pig species to North America. I watched a show about hogs on National Geographic Channel and they said that a domestic hog, with floppy ears, curled tail and not hair will actually change it's DNA when it's set free, or escapes into the wild. It's ears will stand up, it's tail will straighten and it will become covered in hair. I forget exactly how long this takes, but it's fairly quickly. Maybe a year or two. I just find that to be amazing!!!!