lol at the end of the day what is kaido fruit ? a fish and what is zoro a shark so either way sharks eat fishes even if u deny the tiger being zoro and dragon being kaido u can't deny the other one lol if u ask me oda wouldnt reveal zoro being a tiger early on anyways all his japanese fans would of recognized that so quickly sooo he goes with a shark and kaido a fish but he throws in hints he feels zoro is a tiger ...his office and the actual one eyed tiger in the manga zoro defeated