No, these are not normal pasture denizens here, but there's always a few folks that keep exotics like bison, deer, rare sheep, etc. These buffalo roam in a field near town along the highway if you're heading towards Dallas/Ft. Worth.
We have another place on a back road that keeps elephants and camels. If I can ever get a photo, I'll post one, but their sightings are rarer - not sure if they're in a traveling circus. Hope they're well-tended at least.