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>The Pokemon world is where real-world animals don’t exist (the few appearances of real world animals in earlier episodes, Shudo says, is due to the animation staff not paying enough attention) so he wanted to have the third movie tackle this question. What happened to all the real world animals? Why are there real trees and flowers but not real animals? What is the difference between plant Pokemon and regular plants?
>The idea was to have the third movie introduce a new type of creature - real world animals - into the world where only humans and Pokemon exist. This would have been done with the discovery of a Tyrannosaurus Rex fossil; not a fossililized Pokemon, mind you, but a real, actual dinosaur fossil.
>The discovery of a Tyrannosaurus Rex fossil was, as you would expect, big news in the Pokemon world. Real world animals used to exist in this world and records (including photographs) of them do exist but there isn’t anyone alive today who actually remembers ever seeing one. A Darwin-type theory of evolution doesn’t really exist, either, and professors who tried to tackle this problem usually tended to stop what they were working on to move to the countryside to try to figure this out. Orchid-Hakase is one such professor.
>Satoshi and his friends, as well as the Rocket trio, would have spent the movie trying to stop this dinosaur fossil’s rampage. The fossil’s rampage would have taken it through the Rocket-Dan’s secret base as well, causing the rest of the organization to get involved as well.