From Yoda's species:
For reasons unknown, George Lucas maintains a strict policy of keeping the history, name, origin, and whereabouts of this species secret. This policy has resulted even in certain Star Wars publications being canceled. A significant example of this policy was when Lucasfilm (likely at the direction of George Lucas himself) ordered the pulping of the entire print run of a yet-to-be-released Star Wars trading card depicting a group of the unknown tridactyl species worshipping a larger-than-life-size statue of one of their number, led in prayer by an individual who may have been intended to be Yoda.WHY DOESN'T YODA HAVE A SPECIES
Prior to the creation of Yaddle for The Phantom Menace, Lucasfilm actively discouraged licensees from exploring Yoda's species, wishing to avoid confirming that an entire species of Yoda-like individuals even necessarily existed.
WHAT IS GEORGE LUCAS HIDING????