Octopuses have nine brains and blue blood
Octopuses are incredibly unique, featuring nine brains that allow their arms to act independently, alongside three hearts and blue blood, making them a marvel of evolution.
An octopus truly stands out with not one, but nine brains! One central brain manages its nervous system, while each of its eight arms boasts its own 'mini-brain' – a large cluster of neurons. This allows each arm to independently taste, touch, and move without needing constant direction from the central brain. In fact, about two-thirds of an octopus's neurons are located in its arms, not its head.
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