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.

More than just aquarium must-sees, octopuses are known for being highly intelligent creatures and, at times, even friends to humans. These connections are the subjects of the popular 2020 documentary ...