Mammals live all across the world. They can be found living in the ground, in trees, and even in the sea. There are many different kinds of mammal, including us humans! Find out more about ...

Mammals are among the most adaptable animals on the planet. They are found on every continent and in every ocean, and range in size from tiny bumblebee bats to enormous blue whales. One reason for ...

Studies demonstrate that other animals dream. However, their experience depends on their lifestyle and brain anatomy.

From the top of Shifting Sands dune in the Serengeti Plain of Africa a million mammals are in motion. Wildebeests. Zebras. Gazelles. The plain is black with them. It is wildebeest calving season ...

Scientists have discovered the oldest known saber-toothed predator, a 270-million-year-old gorgonopsian therapsid fossil.

The origin of mammals is shrouded in mystery, but every fossil clue helps rewrite the story. A new discovery on a Mediterranean island is challenging what we know about when—and where—mammal ancestors ...

Decompression sickness can occur when a mammal swims to the ocean's surface too quickly, and the change in pressure produces lethal nitrogen gas bubbles that clog its blood vessels. As deep divers ...

Although they came into their own only after the extinction of the dinosaurs some 65 million years ago, mammals had maintained a low-profile existence for some 150 million years before that.