Cane Toads, introduced in 1935 to control two insect pests of sugarcane, failed to do that but did spread over an area of 100,000 square miles, assisted by the fact that they can live for up to 20 years and that females annually lay 30,000 eggs. The toads are poisonous, inedible to all native Australian animals, and rate as one of the worst mistakes ever committed in the name of pest control.
