Do octopuses move when they are dead? And these arms can continue reacting to stimuli even after they are no longer connected to the main brain; in fact, they remain responsive even after the octopus has been euthanized and the arms severed.
Can an octopus regrow its head? Each of the octopus’ eight tentacles is controlled by a cluster of nerve cells, called ganglia, and the ganglia are in turn controlled by the centralized brain. As it turns out, the octopus can also regenerate parts of its nervous system after an injury.
Do live octopuses feel pain? Octopuses can feel pain, just like all animals. Of eating an octopus alive, Dr. Jennifer Mather, an expert on cephalopods and a psychology professor at the University of Lethbridge in Alberta, Canada, says the following: “[T]he octopus, which you’ve been chopping to pieces, is feeling pain every time you do it.
Can octopus come back to life? If an octopus’ arm is cut off without the poor guy being euthanized, it’s no sweat for the cephalopod. While cut-off limbs do not regrow a new octopus, à la starfish, the octopus can regenerate tentacles with a far superior quality than, say, a lizard’s oftentimes gimpy replacement tail, Harmon writes.