>>44398233I personally believe that pokemon live up to the age of most humans. As strange as that may sound. So like if a Pokemon was lucky enough to survive for like 70-80 years I could see them dying around then of natural causes.
But it also might depend on the species, maybe the human-like ones live longer the smaller ones don't? We've seen very old pokemon in the anime, but we don't really know how old they are in general.