what part of nw Oklahoma are you in? my brothers place between roll and durham never saw a pig til 5 years ago now they have killed 100 + in the last 2 years. it's all shin oak and sand hillsHonestly don't think they ever will, just not enough cover. There's been a few seen over the last 20 years, and a handful killed, but it's several years between sightings, and always along the same stretch of spring feed creek down the road from a a guy who raised hogs lol. He died and there hasn't been any since.