Animal experiments are widely used to develop new medicines and to test the safety of other products. Many of these experiments cause pain to the animals involved or reduce their quality of life ...

Early humans began crafting stone tools more than 3 million years ago by chipping off flakes to form shapes and sharp edges ...

In the wild, hyenas often steal food from big cats. Watch a mother and son leopard duo trick a hyena and get back their ...

Evidence suggests deliberate production of bone tools happened much earlier than previously thought — plus, how cells’ waste-disposal systems could help defend against infection.

Now, researchers have uncovered a substantial cache of prehistoric bone tools in the same region dating back 1.5 million years. It's the oldest collection of mass-produced bone tools yet known, ...

Unable to identify the animal — and wondering if it was someone’s escaped pet — she shared a video of it on social media. On Feb. 25, Cerase posted a five-second clip of the tiny creature ...

Researchers identified the flying squirrel fossil among a cache of animal remains that were unearthed in Tennessee 25 years ago. The specimen belongs to an extinct genus called Miopetaurista ...