I did a quick Google search, and the nutjobs at Field & Stream had this to say about prairiedogs:
Maybe it's newagey of me, but I think if you kill a living animal you should have some respect for the value of its life. Killing something just to let it rot in a field isn't very useful. I have all kinds of ideas for coyote pelts, but I could make wallets and stuff out of prairiedogs, and maybe keep a carcass or two and make some sausage or something. Blowing them to bits isn't what I have in mind.My lifetime favorite has been the .220 Swift though because the blazing speed at 4,100 fps was just fun. For shots inside 100 yards, you see the prairie dog blow apart in your scope before the recoil moves it off target.
Edit: I feel like I rambled here. If it's not clear, I'm wondering if there is a rifle that will kill both coyotes and prairiedogs cleanly and leave them in harvestable condition.