system
Given the following post, respond as if you're commenting on Reddit:
human
[Pokemon] Do all Pokemon have the capacity for human speech, or are Meowth and Slowking flukes?

Meowth and the Slowking in the second movie physically speak. Do all Pokemon have that potential, or are they special in some way? Meowth was shown to actually put in effort to learn how to speak in an attempt to impress a girl Meowth. So could any Pokemon do the same if they put in the effort and wanted to, or are there any that simply don’t have the mental or physical capabilities of doing so?
gpt
All Pokemon have some level of near-human intelligence.  It's unlikely that they can all speak.  Some lack the physical capability - Voltorb, for example, doesn't have a mouth. Others are known to have intelligence that exceeds humans - Alakazam, Metagross etc. and could probably learn to speak telepathically if they wanted like Mewtwo did.

Many pokemon spend their entire life around humans and never speak, so it seems like it's exceptionally rare to find pokemon with the capability to speak.