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They are native to the planet Clak`dor VII in the Mayagil system. They quickly developed advanced technologies, among them the use of deadly chemicals for warfare. A planetwide toxicological war between the cities of Nozho and Weogar - based on the disputed patent rights to a new stardrive - destroyed the once-beautiful planet, and left the Bith the choice of remaining bound there or expanding to the stars.
Immediate survivors were formed to build hermetically-sealed cities, although they quickly realized that it would better preserve their race to travel among the stars. Bith mating is a less than emotional experience, as the Bith race has lost the ability to procreate sexually. Instead, they bring genetic material to a Computer Mating Service for analysis against prospective mates. Bith children are created from genetic material from two parents, which is combined, fertilized, and incubated for a year.