Invasive Species

Brown widow spiders, which are invasive to North America, are wiping out black widow populations in the U.S. by aggressively attacking them for no clear reason, a new study shows.

Researchers accidentally discovered that GPS-tagged mammals can help locate Florida's invasive Burmese pythons, which are destroying local ecosystems.

Jewel damselfish living on coral reefs surrounding rat-infested tropical islands have become less territorial and less aggressive due to a bizarre ecological link between the two species: bird poop.

In an epic tug-of-war, it took the British angler 25 minutes to haul the monster fish, nicknamed The Carrot, to land.

In a viral Instagram video, pathologists remove a dead 5-foot alligator from the body of an 18-foot Burmese python.

Officials removed two breeding females and many hatchlings.

Crazy ant colonies in North America are being driven to extinction by a fungus that targets the invasive pest species.

Before now, the species had never been seen catching bats.

Humans have sent many species to extinction, but can other animals do the same?

Taiwan is racing to contain an outbreak of invasive cane toads, which likely escaped from a black market breeder.