The infamous Australian Cane toad was originally native to Tropical America, from South Texas to the Amazon Basin. It can exceed five pounds in weight and attain a snout-vent length of more than a foot. Because of its voracious appetite, it was introduced to tropical places around the world to control sugar cane pests. Initial successes in Puerto Rico encouraged introductions elsewhere, with disastrous results. Both tadpoles and adults are highly toxic, causing the decline of predatory reptiles, not to mention small prey species.