How many brains does an octopus have? Octopuses have nine brains . Each of their eight arms contains its own small brain, allowing the arms to act independently and complete tasks efficiently.

An octopus swims at the Ocearium in Le Croisic, western France, on December 6, 2016. (Photo by LOIC VENANCE / AFP) (Photo credit should read LOIC VENANCE/AFP/Getty Images) Octopuses have three hearts.

The eldritch, alien movements of octopus arms have captivated people for generations. These underwater cephalopods don't have just one brain but nine, with each of their arms able to act semi ...

Octopus fossils are rare; animals with soft bodies generally leave no trace. This fossil is about 90 million years old, which makes it one of the oldest known octopuses.