At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

There are few things more joyful, if occasionally nerve-wracking, than having a pet in your home. And plenty of people agree.

Nature is full of surprises, but few are as fascinating as hybrid animals, creatures born from crossing two different species ...

"May harbor genetic variants that should not be diluted." Experts issue warning after observing concerning change in bear ...

A pet cow has learned to scratch herself with a broom, showing creative problem-solving skills that make it harder to ignore ...

Scientists have long focused on quantifying fear and other negative emotions in animals. Now they’re trying to measure ...

Climate change has a wide range of effects on wildlife. It affects seasonal migration, reproduction times, body size and mass ...

Same-sex behavior is widespread in primates and may help strengthen social bonds and improve survival under challenging ...

A popular idea suggests a link between big brains and a rich social life, but octopuses don't fit the pattern, which suggests ...

Credit: Ratno Sardi/Adhi Agus Oktaviana/Maxime Aubert/Cover Images A hand stencil found on the wall of a cave in Indonesia ...

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ornament to attract females rather than purely as a badge of status to ...

In the animal world, power is not always measured in kilograms or muscle mass. A single, well placed venomous bite can topple ...