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