If one of their arms is cut off, the arm will often just continue on as though nothing has happened for several hours.

Unless otherwise noted, all facts are sourced from The Soul of an Octopus: A Surprising Exploration into the Wonder of Consciousness by Sy Montgomery (which is a legitimately awesome book and I totally recommend it).

Octopuses have a dominant eye the same way humans have a dominant hand.

Patrik Stollarz / AFP / Getty Images

They can taste with their skin.

Their suckers are best at it, though.

studioflox.com / Via giphy.com

Octopuses can shrink themselves down and get their bodies through truly tiny openings.

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