Invasive snakes 'hitchhiking' on planes

A team of international scientists has discovered why brown tree snakes have become one of the most successful invasive species.

Big cats in evolutionary arms race with prey: study

Lions and cheetah are faster, stronger and no less agile than their prey, but zebras and impalas compensate with a surprising tactic, researchers said Wednesday: slow down, and keep the big cats guessing.

Ancient DNA offers new view on saber-toothed cats' past

Researchers who've analyzed the complete mitochondrial genomes from ancient samples representing two species of saber-toothed cats have a new take on the animals' history over the last 50,000 years. The data suggest that ...

Cats kill one million birds a day in Australia

Feral and pet cats kill more than one million birds in Australia every day, new research showed Wednesday, with the staggering slaughter driving the decline of many species.

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