>>53337913My headcanon is that a Koraidon died protecting a Ho-oh or maybe something it cares about. So Ho-oh revived it like it did the dogs later in the timeline. That's why it looks like Suicune. I can't only guess a similar event to the KT mass extinction happened and the smaller mammal like Pokémon filled all the spaces left void by all the now excint Pokémon. Evolution can happen pretty rapidly (relatively anyway) if there's plenty of avaliable niches that are available.
