Invasive Species

The Australian government recently announced an unusual initiative to eradicate a long-standing animal pest problem.

Tyrannosaurus rex, king of the dinosaur age, wasn't a North American native, a new study suggests. And once the beast came onto the scene it muscled out all its competitors and took over.

The Burmese python has worn out its welcome, and its time is nigh.

The king crab could soon take over a whole new kingdom, and it has global warming to thank for the conquest.

Australia's Adele Island appears tranquil from space, but this sandy spit is the site of efforts to eradicate an invasive rat population that devastates seabird populations.

A giant python, about as long as a shipping container, was captured in Everglades National Park in Florida earlier this month (July 9).

A throng of giant flying fish that catapulted themselves towards oncoming rowers were not coordinating a fishy assault but were probably just spooked by the boat, science suggests.

They multiply like … fish! Apparently, a handful of goldfish dumped into a lake in Boulder, Colorado, just three years ago have reproduced and now number in the thousands.

Thousands of goldfish were spotted in March in Teller Lake #5 off Arapahoe Road in Boulder, Colorado, and biologists are concerned. Here's a look at the fish-filled lake.