Pearls Before Swine by Stephan Pastis for November 09, 2009
Goat says, "I hear Pig's Guard Duck is withdrawing from your front lawn and redeploying." Rat says, "Yeah. He says there's a new enemy that's mobile and can live off the land. They produce vast quantities of nitrogen and they're already operating in our country." Goat says, "Oh, my god. Who is it?" Guard Duck says, "Cows. They hate your freedom." Pig says, "How dare they."