The world of Dunia has two ancient ancestral species, capable of sapience, that determine certain base characteristics of that species' descendant races; the Fay and the Sifir. The Sifir are commonly animal-like, like the Dru'un and Natukuna, but are not animals as they are sapient. But they often resemble animals both in mentality and physical form. However they are not always straight animal-like, which is shown by the Illim and the Kwugra, who both resemble no known animal.
Genetics and Reproduction
Sifir races generally reproduce sexually and only with their own particular race but they are all able to have offspring with one another, producing a child that is either one race or the other. The Sifir races do not have mixed offspring.
Sifir races are commonly of average intelligence, with a few exceptions in the Dru'un and Hessak, who are both on the lower scale of intelligence. The kunaupti could be considered above average intelligence.