Mammals are quite diverse. They come in all shapes, sizes, colors, and activity levels. They also differ widely by lifespan.

Mammals come in a variety of proportions, and some species evolved legs so short they almost look goofy. Many of these short ...

Raccoons are medium-sized mammals that are native to North America and Mexico. These critters have also been introduced to Europe and Japan. They are easily distinguished by their bushy tail and ...

Historic numbers of animals across the globe have become endangered or extinct. And according to the United Nations, the rate at which species are being pushed to extinction is accelerating. But, some ...

"The avian influenza outbreak that put some of California’s most beloved marine mammal and sea bird populations at risk has ...

A hantavirus outbreak on a cruise ship has revived fears of rodent-borne diseases. From the Black Death to modern outbreaks, here's how such infections have shaped human history, and why they still ...