In the movie The Princess Bride (one of my favorites, by the way), traversing a particularly ominous swamp meant risking contact with the R.O.U.S. – a calm acronym for the very frightening idea of giant rats, otherwise known as Rodents of Unusual Size. Well, now a species of R.O.U.S. has made its way from the jungles and rivers of South America to the backwaters and bayous of Louisiana. They’re giant rats, not beavers, and they’re 20 pounds each, multiplying like crazy, gobblin