Octopuses have a large nervous system, with the average octopus having about 500 million neurons or brain cells. That puts it in the same “brain range” as smaller mammals such as dogs. Unlike ...

Two-thirds of an octopus’ neurons reside in its arms, not its head. As a result, some of the arms can figure out how to crack open a shellfish while the rest of the animal is busy doing something else ...

8 Mind-Boggling Facts About the Octopus Did you know octopuses are highly intelligent animals with the ability to problem-solve complex puzzles – and even change color? They have three hearts ...

Some scientists claim that octopuses could be the next big species after humans go extinct and that there is much to learn about the tentacled sea creatures. These are some ways that octopuses have ...

Blanket octopus pairs are some of the undersea world’s oddest couples. What’s so startling is the size difference: Males are about the size of a walnut—less than an inch long—but some ...

The dozen or so species that make up Grimpoteuthis are called Dumbo octopuses because of the two large fins—one on either side of the mantle—that protrude like ears. Add in the octopus’s ...

Octopuses have blue blood, three hearts and a doughnut-shaped brain. But these aren’t even the most unusual things about them! Known for their otherworldly look and remarkable intelligence, octopuses ...

Researchers in New Zealand captured the odd pairing on video, but they still don’t know how to explain the behavior ...