Crocodiles, cane toads and the mosquito-borne dengue virus may start cropping up in more southerly regions of Australia as the tropics expand due to climate change.
Marissa Calligeros A concerning rate of "mutant toads" with extra limbs and missing eyes are being found in the industrial Queensland city of Gladstone.
Scientists say they have found the best weapon yet to eradicate cane toads from isolated areas - using the amphibians' own toxin against them.
Jacinda Tutty The cane toad’s days may be numbered as new research shows the species' own poison could prove to be the best weapon in the fight against the pest.
Richard Gray, London Sir David Attenborough has chosen some lesser-known species for attention.
Rory Callinan One morning at a remote ranger station in Kakadu National Park in the Northern Territory, staff made a gruesome discovery.
John Huxley This one was brought in, its back leg broken, possibly in a whipper-snipper accident, by a distraught gardener.
'No one is allowed to sleep until we find it.'' Ecologist Dr James Smith is half joking but the force of his voice suggests he is determined, even a bit desperate.
Noah was a lucky guy when you think about it. He didn't have to pick and choose which animals would have a place aboard his ark. Every creature was saved. Modern-day species are not quite as lucky.
Bridie Smith When radio transmitters surgically inserted into wild tree frogs started appearing on the ground without explanation, scientists had a puzzle on their hands.
Nicky Phillips, Science At last, the secret hideaway of cane toads has been found.