I have been doing some reading and researching about Yoda's species.
It seems that, even if their species name and homeworld remain a mystery (and are wanted to remain a mystery), there is evidence of other members of his species among the Jedi and even among the Jedi council (such as masters Yaddle and Vandar Tokare).
Some of the references state that
all known members of the [Yoda's] species were Jedi
So I understand that that statement does not mean that every member of the species is a Jedi. Nevertheless, as with any other species, odds are that some of those Jedi might follow the Dark Side (unless the members of the Yoda's species have some sort of remarkable understanding of the Force and resistance to the Dark Side's temptation).
Are there any known Sith (or any other kind of followers of the Dark Side of the Force) from Yoda's species my question is.