There used to be a decent population of them on top of Soddy or Bakewell mountain down south of you where a landowner had turned them out to hunt. A few got away and survived for a while, or so I've been told.
Also, some don't know this but there is a high-fence "hunt" property up north of spring city. I think that he mainly has hogs and exotic sheep and stuff, but there may be something like that around