California's resurgent gray wolves are leaning heavily on an unintended food source: cows. A new study in PLOS One finds that ...

Ecologists have described the mammoth steppe as one of the most productive large-herbivore ecosystems in Earth's history.

For nearly 30 million years, a 2,000-pound beast known as the entelodont ruled a sweeping empire from Mongolia to what is now ...

A study on gray wolves' dietary preferences shows that the population regrowth is connected to the fact that wolves are ...