Nothing illustrates why exotic species should not be introduced to Australia more than the cane toad.
These venomous amphibians are found throughout Northern Australia but are native to South and Central America.
The large toads were introduced to Queensland in 1935 to control destructive cane beetles in sugar cane crops, but quickly became a pest in their own right.
Highly invasive, they spread quickly and poisoned anything it tried to eat.
“Local native forest rangers tell stories of birds falling dead from the sky after eating a tasty cane toad,” WWF says.
“Since their introduction to Australia, they have continued to cause local extinctions of native animals, and they are marching across the country.”