I just thought of something. For a while, people have been wondering about the existance or lack there of of animals in the pokemon world. For me, the answer was simple: of course not. Regular animals would have been wiped out in like pre-kabuto times. Think about it. There's two one-celled microorganisms in the primordial sea. One is the ancestor of pokemon, one is the ancestor of animals. They both need to eat, and they find eachother. One swims over, only to be hit by, I don't know, absorb, and dies. Just as in Darwinism, the fittest would survive. And i would think that pokemon would be more fit than regular animals.