A single set of bones locked inside a Pittsburgh museum holds the legal identity of one of history's most fearsome predators, and the system protecting that name is far stranger and more fragile than ...

When we explore the vast diversity of the natural world, we naturally rely on our visual senses to categorize and understand the creatures around us. We tend to assume that if two creatures share the ...

Logically speaking, you would think that animals who appeared to be the same—even if they were found in different parts of the world—would belong to the same species, and that they would share the ...

A new study investigates how different mammals react to climate change. Animals that live for a long time and/or produce less offspring -- like bears and bison -- are more resilient than small animals ...

In our modern era of larger, more destructive, and longer-lasting fires -- called the Pyrocene -- plants and animals are evolving quickly to survive. By synthesizing the wide body of research about ...

It's easy to think of pupils as simple holes that widen in the dark and shrink in the light. But if you look across the animal kingdom, you'll see a variety of pupil shapes: vertical slits in cats and ...