Petroleum County livestock were eating regally when we drove north of Billings midsummer to find pancakes supposed to be "the most humongous on earth." As the sun rose, we saw baled rolls of green hay impeccably marshaled in fields out to the horizon. The chlorophyll smell of cut grass was intoxicating. Where ranchers weren't yet haying, cows and horses browsed through prairie so tall the animals didn't need to bend their necks to feed.