Pumas in Patagonia, Argentina are eating penguins in a national park — and it's changing how the big cats are interacting ...

Since the start of this millennium, Ireland has lost around half a million waterbirds — almost 40% of the total population ...

The novel hunting behaviour was observed on the windswept shores of Monte León National Park in south-east Argentina.

A natural experiment in a national park in Patagonia shows how the return of a large predator can reshape an ecosystem.

Scientists say dolphins and orcas have teamed up to hunt salmon off British Columbia. It’s the first time such behavior has been documented between the two mammals.

Nature can be brutal. But animals also help each other, sometimes in ways unimaginable to the human observers. For instance, ...