“Due to the involvement of the nervous and muscular systems, it is likely that cephalopod color change is one of the most ...

5/5 Philosopher and scuba-diver Peter Godfrey-Smith explores the intelligence of the octopus.

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.