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How many brains does an octopus have?

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The fact that the octopus is not a terrestrial animal further contributes to the ignorance many people express about the animal. How much do you know about the octopus? For example, how many brains does an octopus have? read more

Octopuses only have one true brain, which is located in their head, wrapped around their esophagus. However, octopuses have other neurons, the cells that form the brain, in other places as well. Octopuses have large numbers of neurons located near their eyes and others inside their arms. read more

Octopus arms do not become tangled or stuck to each other because the sensors recognise octopus skin and prevent self-attachment. The arms contain tension sensors so the octopus knows whether its arms are stretched out, but this is not sufficient for the brain to determine the position of the octopus's body or arms. read more

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