I suggest you look at the OLAP properties in the Oklahoma panhandle. There are several quarters of land there that I bet you can locate prairie dogs. If you use the aerial on google maps, you can see the marks for a colony and then just go out there. I haven't seen any regulations against hunting them on public lands. Here's the type of marks you would be looking for. The picture below is some private land in eastern Cimarron County where I shot an antelope but my stalk was a little weird because I was looking down most of the time to make sure I avoided all the holes. I think this specific spot, the OSU graduate students go out to survey the prairie dogs every year or two. You do have to be careful because some OLAP properties ONLY allow shotgun and archery.