When people think of intelligent animals, they immediately think of dolphins, elephants, and chimpanzees. But one of the most intelligent problem-solvers is hiding deep beneath the surface, called the ...

Octopuses are among the most unusual animals in the ocean, with intelligence and biology that continue to puzzle scientists. Their bodies have no rigid skeleton, allowing them to squeeze through ...

We named him Squirt—not because he was the smallest of the 16 cuttlefish in the pool, but because anyone with the audacity to scoop him into a separate tank to study him was likely to get soaked.

Jenny Evans / Getty Images Octopuses are capable of sophisticated tasks, from solving puzzles to decorating their dens to remembering people's faces. So when a company in Spain announced that it ...

Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...