While this is useful in mammals, the nervous system of an octopus is built completely differently. Over half of the neurons in Octopus vulgaris, about 300 million, are not in the brain at all ...
The nervous system of this common octopus, Octopus vulgaris, is far larger and more complex than that of most invertebrates. Can it think? Is it conscious, as some scientists and philosophers ...
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.