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

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual ...

An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...

Evolution is often perceived as an incredibly slow, natural process driven by environmental pressures over millennia. That characterization certainly holds true, but humans have also repeatedly ...

A genomic atlas of Nematostella vectensis reveals how primitive animals created multiple cell types millions of years ago, ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

We project a great deal onto animals. They are elevated into ideals of love and fidelity (dogs, horses), and often they are reduced to objects and tools (cattle, pigs, horses again). Much of ...

As animals go about their lives ― eating, fighting, having babies ― they don’t always follow the script laid out for them by ...

Earth’s first sponges may have been ghostly, soft-bodied pioneers—ancient animals that evolved long before their skeletons ...

A new study posits that same-sex sexual behavior developed to help primates in complex social groups ease tension, reduce ...

A pigment that makes feathers and hair orange helps prevent cellular damage by removing excess cysteine from cells.