Since then, pig populations have multiplied rapidly across a wide swath of territory that stretches from the deep South, across parts of the lower Midwest, and all the way into California.

These tiny animals may fit on a dime, but they are the hardest to conserve.

An international team of researchers was camping in the Foja mountains of Indonesia when herpetologist Paul Oliver spied a frog sitting on a bag of rice in the campsite. On closer look it turned out ...