The octopus is one of the most intelligent invertebrates in the world.
They have been known to build with Legos and give Mr. Potato Head a face!
Back in 2008, researchers set out to discover whether the octopus is left or right handed.
Is their one tentacle that is stronger than all the rest?
In order to figure out the answer, these scientists gave a group of octopuses a Rubic's Cube.
So far, it's still unknown if one tentacle is dominant over the rest.