No license is needed in Wyoming for prairie dogs. I shoot a lot of state land and private north of Cheyenne , though they went through about 5 years ago and poisoned most areas ,they are coming back in some areas. They get shot at a lot on state land so after the first bang its only the ones out at 200 yards and farther that are out . If I'm in town at that time in July I would be glad to help you out for a day on some state land.