The longest animal on Earth isn’t what you think. It’s a drifting, gelatinous predator whose reach reshapes how we define ...

The little dinosaur had been dead for roughly 100 million years before anyone thought to scan the rock it was buried in. When researchers finally did, what emerged on their screens stopped them cold.

Around 200 million animals are used in lab research around the world each year. Organoids may one day replace them.

The natural and the social world shaped the evolution of each. Knowing whom to invite to dinner is as important as knowing how to cook.

Q. You wrote that blue whales are the largest mammals. What are the largest and smallest animals of other groups? What ecological problems do animals confront by being extremely big or extremely small ...

(CNN) — A chunky, squat creature that roamed Earth 307 million years ago is helping scientists understand how plant-eating animals first appeared on land. The newly described species is one of the ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration shows what researchers believe Tyrannoroter heberti looked like. - Hannah Fredd A chunky, squat creature that ...

Asia and Africa are home to some of the most dangerous animals on Earth, each shaped by very different ecosystems. This video compares five Asian animals and five African animals based on size, ...

But that isn’t always the case. There’s a place off the coast of Jervis Bay, Australia – known as Octopolis – where a surprisingly large consortium of octopuses were caught hanging out together. In ...