Those are the 3 main characteristics of an octopus, not counting, of course, its amazing intelligence. Octopuses are surprising creatures in all aspects, and I seem to remember that they are, after humans (At least some), the most intelligent animals on earth.
In the following video, which is a mini-documentary made by the Acuarium Finisterre, in La CoruƱa, you can see three examples of the characteristics of the mollusk. Will the octopus be able to open a jar and get into a bottle to eat some crabs? Will he be able to shape his body to escape through a small tube? To answer these questions watch the following video.
Seen in ALT1040