Related topics: species · mammals

Bats don't rely on gut bacteria the way humans do

Right now, there are trillions of bacteria living in your gut, making up about one percent of your body weight. They're supposed to be there—we need them to help us digest food and fight off diseases. The same is true for ...

Extinction of ice age giants likely drove surviving animals apart

As the world grapples with an extinction crisis, our large mammals are among the most endangered. These threatened species—rhinos, pandas, tigers, polar bears and the like—greatly influence their ecosystems. So what will ...

Untangling the branches in the mammal tree of life

The mammal tree of life is a real leaner. Some branches are weighed down with thousands of species—we're looking at you, rodents and bats—while others hold just a few species.