#1). There are p'dogs from Mexico into Canada, but. I am told TX/OK is pay to hunt... Had a friend, claimed to have an Army buddy grows wheat just north of Cinnamon Grassland (yes, I know, Cimmaron, private joke)... he got heart disease and died on me before we got there. oh wellllll Way he talked, you might be welcomed with open arms, might not. Calling Chambers of Commerce in small towns where everyone has guns, never hurts although they are inclined to lie to get "business" into the area... CO prefers to catch and release p'dogs. That is like "catch and release" rats (4 legged) in NY City... (ha, ha).
#2). In the norther plains, the grasslands are in the charge and keeping of the Forest Service. [Yes, the tree people also do the grasslands. Government.] The regional headquarters, ASSUMING you want to go as far north as I90, is Forest Serv. 125 N. Main St., Chadron, NE 69337; (308) 432-0030 (I think). Mr. J. Schumacher, I believe, last I knew. Wyo is "wide open." No license needed last I knew. You won't hurt an oil derrick with a varmint rifle (unless you really work at it and that might get you lynched or beaten to death with some of those huge wrenches...don't). Nat. land is managed for multiple uses which includes shooting. P'dog town between Douglas and Newcastle, alledgedly, 26 miles in diameter. Montana is almost this good. I think you do need a license. Never got that far. Ran out of ammo in Wyo.
BEWARE! a). There is bubonic plague in the furballs. BLACK DEATH. They say they can cure it now with alot of antibiotics. Why bother? Leave the pieces for the coyoteeeesss and raptors. It is carried by fleas that jump. Look. Take pictures with long lens. JUST DON'T touch. If you must have a taxidermist sample, bring gloves, flea powder, coolers, sealed bags, etc...
b). The tree huggers have been lying that p'dogs are endangered. They (the feds) have closed some areas for shooting to protect a black footed ferret weasel that almost died out from a house cat disease... Shoot there and it is confiscation, fed slam... DON'T ... ASK CAREFULLY!.
SD markets. Rosebud Indian reservation (REZ) south central. Standing Rock, north central. Pine Ridge (where they drink too much) more S.W. corner. Google the rez name/tribes (Sioux) and get prices. NOT CHEAP but quick. Buffalo Gap Nat. Grasslands, south of Badlands Nat. Park (NO SHOOOT IN PARK, FED SLAM!!!) public land, but some closed for the d__ weasel...
VHA IS IN Pierre, SD. [ varminthunters.org ]?? 800 number. Magazine. Parties. Shooting matches. Not free. But no charge to call/ask??? ND alot farther. LUCK...