The Blue Ringed Octopus has enough poison to kill humans. When the Blue Ringed Octopus’ rings turn deep blue that means that it is ready to attack at any time
The Octopus has no internal or external skeleton which means that it is able to squeeze itself into tight places.
The Octopus is a master of disguise and is able to blend into pretty much any background using its elaborate camouflage.
The Octopus has three hearts. Two are used for pumping blood through the gills, and the third pumps the pale blue blood of the Octopus through the rest of the body.