An anonymous reader writes "Yahoo News is reporting that toxic toads imported from Hawaii to help control the beetle population that was ravaging Australia's sugar cane crops have instead become pests themselves. From the article: 'The toads can grow as large as dinner plates and weigh up to 4.5 pounds. Their heads and backsides are studded with rows of warts that secrete a milky white toxin called bufotoxin. Because Australia has no native toads, many native predators such as snakes, lizards and mammals are very sensitive to the toxin. So when the toads spread, they immediately kill off many of the region's top predators.'"