At the beginning of Pokemon GO's long and storied existence, there were only four Pokemon that were "regional," meaning they could only be caught in certain parts of the world: Farfetch'd, Mr. Mime, ...

It makes sense that a tropical Pokémon like Tropius is only available in tropical areas and that the kangaroo Pokémon Kangaskhan is only available in Australia. But the list of regional Pokémon ...