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 widely known for their intelligence, including problem-solving, tool use, and complex hunting behavior. For years, that intelligence was thought to operate almost entirely in isolation, ...

An ordinary egg became the center of attention when it was introduced to a curious octopus underwater. What seemed like a ...