Dolphins live and hunt in large social groups called pods, and they communicate with each other using high-pitched clicks and ...

Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery. What little was known about them had been mostly gleaned from analyzing ...

These strange tusks were likely used for stripping ... It roamed the Americas during the last Ice Age, preying on large mammals like bison and camels. However, smilodon’s saber teeth were ...