In fact, the Zsiverians had no small hand in the evolution of the Praan-blug. Sometime in the third decade of the 35th century Galactica, the Zsiverians, in a move typical of their intellectual arrogance, altered the collective genetic code of the Praan-blug in an attempt to "jump start" their evolution. This, of course, is the primary source of the tremendous animosity that the Praan-blug have for the Zsiverian Science Council: The Praan maintains that they were deliberately kept from evolving into a much superior being. Their true nature before the Zsiverian Intervention is still unknown to this day.