Toxic cane toads moved into Purnululu National Park, Western Australia, in May 2013. Since then, these deadly toads have been wiping out entire species.

Experts have raised alarm as their population has increased significantly as they invade every habitat system. Lee Scott-Virtue, founder of Kimberley Toad Busters (KTB) said cane toads have already displaced some species in the areas they infected including king brown snakes and quolls.

Visitors and people were shocked to see presence of such a high number of toads in the park. Virtue raised an alarm by affirming if nothing is done about its breeding then these toads are going to enter into every national park across the nation.

Though cane toad is native to Central and South America, it has now spread to different countries in Oceania and the Caribbean and all the credit for the quick spread goes to its rapid reproduction. In 1935, cane toad was introduced in Australia as a measure to control cane beetles in Queensland.

Rather than eating the beetles, they spread across the region causing devastating impact on the environment and native species. Cane toads have poison glands and are quite toxic to most animals if touched or ingested.

It is expected that there would be more than 200 million cane toads. One of the ways to control its population is to use cane toad's own poison against tadpoles. Through this measure, cane toads will be killed in masses, but this method is yet to be tried.

Virtue said the park officials have placed toad drop boxes, but the method is able to target just about 1% of the population. It shall be noted that currently, killing toads is banned by the DPaW.