Cane toads have become an ecological disaster in Australia. They eat the native wildlife, but have no natural predators. Cand toads eat native frog species, as well as other small burds and mammals, and they compete directly with native frogs and other species for food. Many native frog species are at risk of extinction as a result of the cane toad population.
The only animals that have worked out how to eat them safely are crows, which flip the toads over and eat the soft underbelly, where there are no poison glands. Northern quolls have suffered huge population losses because habitat loss and the resultant drop in food sources has driven them to try to eat the cane toad, which has, of course, poisoned these mammals. Any native animal that normally eats frogs will be poisoned by the cane toad.
Cane toads are also continuing to spread south. They are remarkably adaptable creatures, and seem to be becoming hardier, adapting to a wide variety of habitats and climate conditions. They also breed prolifically, and wherever they populate, they push out the native species.
It started becoming an invasive species and making other species of amphibians compete for food.
Further information:
There is a great deal more to the problem of the cane toad in Australia than the simple answer given above. Cane toads have become an ecological disaster in Australia. Without any natural predators, apart from a few canny crows that have learnt to flip cane toads over and gouge out their bellies, cane toads are free to wreak their decimation upon native species. Cane toads eat native frog species, as well as other small birds and mammals, and they compete directly with native frogs and other species for food. Many native frog species are at risk of extinction as a result of the cane toad population.
Northern quolls are carnivorous marsupials that have suffered huge population losses due to cane toads. Habitat loss and the resultant drop in food sources has driven them to try to eat the cane toad, which has, of course, poisoned these mammals. Any native animal that normally eats frogs will be poisoned by the cane toad.
Cane toads are also continuing to spread south. They are remarkably adaptable creatures, and seem to be becoming hardier, adapting to a wide variety of habitats and climate conditions. They also breed prolifically, and wherever they populate, they push out the native species.
Making native frogs compete for food.
The cane toad was introduced into Australia. Australia has no native toads at all.
Australia
Cane toad were pest's mainly in Queensland the Northern Territory in Australia
Authorities in Australia have been unable to eradicate the cane toad. It remains a pest with an ever-increasing range.
The cane toad was introduced into Australia to protect sugar cane from cane beetles. The experiment failed dismally, and as a result, Australia now has a toxic creature which presents a very real threat to most native creatures it encounters.
The Cane Toad (Rhinella marina) was brought to Australia
Cane frog or cane toad also known as the Giant Neotropical Toad or Marine Toad, is a large, terrestrial true toad native to Central and South America. Cane toads are a serious conservation issue in Australia. As their populations increase, they threaten the existence of many natural animals. Cane toads are tough and adaptable, as well as being poisonous throughout their life cycle, and have few predators in Australia.
The mulgrave river
The cane toad has become a major environmental pest in Australia. It poses a significant danger to native wildlife. There are no native toads in Australia.
Cane Toads were introduced to Australia from Hawaii in June 1935 in an attempt to control the native Cane Beetle (Dermolepida albohirtum). ( Wikipedia ).
In Australia, their invasive so usually with aggression.
It was brought to Australia to control another pest. Instead, it itself became a pest.