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    10 Animals That Bleed Blue

    Turns out blue bloods are pretty gross even without the inbreeding. Without iron-rich hemoglobin turning their blood a recognizable red, these animals have had to make do with copper-based hemocyanin.

    1. Cuttlefish

    2. Pillbug (Roly-Poly)

    3. Octopus

    4. Tarantula

    5. Clams

    6. Emperor Scorpion

    7. Snails

    8. Lobster

    9. Horseshoe Crab

    10. Squid

    BONUS! Two Animals With Green Blood

    11. Marine Worms

    12. Green Tree Skink

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