How brainy is an octopus? | Natural History Museum

How brainy is an octopus? | Natural History Museum
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    Octopuses are some of the most complex animals on Earth
    They can open jars, use tools and play with objects
    But not all of their neurons are found in the brain
    In humans and other vertebrates, the nervous system is centralised into the brain
    and the neurons that run around the body.
    In octopuses, around two thirds of the neurons are actually found in the arms themselves,
    and these are localised into small brains called ganglia.
    Now these ganglia are involved in touch, they're used for sensing chemicals
    and it's even thought that they could be used in sensing light as well.
    and because of this localised control it means that they're used for things like
    catching food, escaping from predators, for manipulating objects
    and for sensing the environment around them.
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