The dogcow has no natural enemies, but the meager population manages to keep itself in check through its own stupidity. They have a nasty tendency to graze off cliffs (in fact, there are no known "cliff-dwelling dogcows" left in existence) and to get lost in the weeds. You've probably noticed that when you cut very high grass, you tend to get a lot of "paper" in the grass clippings; closer examination would show that much of it is actually dogcow. When a mower approaches, dogcows often actually change their hide to resemble newspaper as a final line of defense--hence the famous expression, "black and white and read all over." -- Technote #31: The Dogcow