It is most likely a sign of noxious things to come: The Environmental Protection Agency is moving toward taxing cows, hogs and possibly other gas-emitting barnyard critters.The EPA is proposing to impose levies on farms or ranches with more than 25 dairy cows, 50 beef cattle or 200 hogs at the rate of about $175 for each dairy cow, $87.50 per head of beef, and $20 per hog.It’s a plan farmers say
