Competition is so fierce Down Under, the invasive cane toad has become a mega-cannibal.
From cane toads to kudzu, invasive species (sometimes called alien species) are those that aren't native to an ecosystem and that cause harm to native species, local economies or humans. Invasive species can be terrestrial species, like the pythons invading Florida's Everglades, marine, like the lionfish invading Caribbean waters, or pathogens. Invasive species can cause harm by out-competing native species, or preying on them. They can sometimes increase fire risks or contribute to erosion. Some invasive species have been introduced accidentally and others, like kudzu, were introduced on purpose and then spread more widely than originally intended. Invasive species are found in every type of habitat and are typically difficult to eradicate. Read more about invasive species around the globe and efforts to stop their spread.
An invasive and destructive "murder hornet" has been spotted in Washington state for the first time this year, and the alien-looking insect was behaving accordingly — attacking a hive of paper wasps.
Highly invasive jumping worms or 'crazy worms' have been found in 15 states, and they are only poised to spread more, scientists warn.
Invading pythons are causing problems for the native wildlife in Florida. Should people start eating them and are they even safe to eat?
A new paper gathers images of invasive Vespa hornet species worldwide, and offers clues to help identify them.
Lionfish are known for their breathtaking beauty, venomous sting and relentless invasion of tropical waters far from their native habitat.
The hybrids could harbor more robust genes that allow them to adapt to various types of environments.
A species of tiny, adorable marsupial that scientists thought had been extinct for more than 100 years has re-emerged in New South Wales, Australia.
Video reveals the invasive lionfish has reached the ocean's twilight zone. There lionfish are threatening local fish species, including ones that science has yet to discover.
A Burmese python treated the Florida Everglades like an all-you-can-eat buffet after it ate three deer in a mere three months, a new study finds.