Cane toads are now a major problem in the northern Australian ecosystem. They have threatened and caused the extinction of many other animal species. Cane toads are harmful to the environment and must be killed because they grow quickly, eliminating other species, and do not have many natural predators. Cane toads are native to Central and South America, but have been introduced to northern Australia. The cane toad was brought to northern Australia to get rid of parasites, but it has become a pest itself. Cane toads harm the environment by growing rapidly and eliminating other species. As their population increases, they take up more space and resources, which also harms other species. Cane toads are able to grow quickly because there aren't many natural predators, and they poison anything that eats them. Due to these two factors, cane toads can easily survive. Cane toads are also difficult to catch and kill. Cane toads are a little larger than a teacup and live in Australian forests, making them even more difficult to observe. Giant toads are also amphibians, so they can stay underwater or on land....