>>105702404 (OP)that cow is sick and producing more gas than normal.
but gases can be and are captured from rotting manure, the manure itself is used for fertilizer (which is indirectly made into fuel if the farm is growing stuff to be turned into ethanol), and some places still use the dried husks of the fiber in the poop as fuel pellets. historically, a "cow patty" was literally an actual thing you would carry around that was a dried piece of cow (or horse) shit used for firestarting since there's a lot of thermal mass in there but a low ignition temperature and the embers tend to stay stuck in there so it's safer and longer-lasting than keeping wood embers going.
>>105702430you take that back