Octopuses think using their tentacles

Like some people you know and avoid, octopuses seem entirely capable of making decisions without using their brains. It was thought that octopuses’ tentacles had brains of their own and would act on their own accord, but now researchers have found that the tentacles and the brain are more connected than they ever would have guessed. Basically, octopuses have miniature brains in each tentacle, which then connect to the larger central brain. This is due to the massive amount of movement and control in the tentacles, if all of the simple information got sent to the central brain it would quickly get overloaded.