In The Original Series (1966-1969), we observe that Spock is a vegetarian. As the Star Trek universe evolved, this became a trait of Vulcans in general.
I recall reading an article once that claimed that Star Trek was the first television series to feature a recurring vegetarian character. I cannot locate this article and I do not have a recollection of how reputable it was.
Is this claim true? Was Star Trek the first television series to feature a recurring character who is vegetarian?