Why do octopus have 9 brains?

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Tags

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2. #three
3. #central
4. #cells
5. #fiction
6. #their
7. #pacific
8. #stranger
9. #cluster
10. #nervous
11. #eight
12. #hearts
13. #nerve
14. #system
15. #brains
16. #blood
17. #movement
18. #addition
19. #reality
20. #biologists
21. #controls
22. #making
23. #gills
24. #giant
25. #there
26. #brain
27. #octopus