I had a grandfather who grew up in the south states mostly, and he swore by mountain feists. He'd talk a lot about how great they were... unfortunately, though, after moving to Cali the only feists he owned were actually rat terriers (I am not sure if he actually got them cross-registered or not). A nearby shelter recently had a bunch of dogs who's dominant breed they listed as mt. feist as well, but it turned out they had just taken a wild guess and had no real reason to think they were that breed... so I don't feel like I've ever really had a chance to get to know one.