A symbiotic relationship is a long-term interaction between animal species that is beneficial for one or both animals. There are different forms: It’s mutualism we’ll mostly look at today. Two types ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a ...

The top row shows variation in a zooplankton, Daphnia: the morph on the right is produced in the presence of a predator cue. The second row shows an example of dimorphic variation in horn length, ...

Animals often get labeled as either predators or prey. But in the wild, survival isn’t always a one-animal job. Some species form partnerships that help them find food, avoid danger, or raise young.

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 ...

Digging up preserved specimens of Earth’s earliest life gives us a portal to the past — and now, that portal is offering us a voyeuristic peek at the oldest example of animal behavior we yet know of: ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The story of two of ...