Sororian

The Sororians were a humanoid race from the planet Soror, in the Betelgeuse system.

Physiology
The Sororians are indistinguishable from humans from Earth, though they possess golden skin and are physically fit, handsome specimens of humanity. They are omnivores subsisting on wild fruits like bananas and deer. Despite being evolving on two different worlds, humans and Sororians are compatible in producing viable offspring.

History
Over ten thousand years ago, Sororians were a humanoid civilization similar to twentieth century Earth. The Sororians were a society of medical practitioners, employing apes in their culture as pets, servants, and lab animals.

Over the centuries the apes soon began to develop mentally whereas the Sororians began to suffer a cerebral regression.

This evolutionary advantage allowed the apes to slowly take over Sororian civilization. Men and women that remained in the cities soon had their roles as masters reversed as pets or animals.

Since their ancestors lost the pedestal as Soror’s dominant race, the Sororians have been reduced as savage naked animals, living in the wilds.

The memory of the ancient Sororian civilization was eventually lost to time by the apes and with their innate characteristics of mimicry, the apes reproduced the Sororians cultural works and sciences as their own.

Culture
Ancient Sororian society civilization was geared towards medical sciences. In contrast modern Sororian society, however has regressed and resemble gorilla colonies of Earth.

Endangerment
Originally the Sororin had outnumbered the ape population but is falling in decline due to over-hunting by the gorilla clan for sport. Sororians are a valuable animal that fetches a high price on the market as they play an intricate part in medical sciences conducted by the apes. However the capturing of specimens has allowed horrific slaughter on innocent men and women for entertainment.

Intelligence
The Sororians have regressed into a semi-sentience state, and are potentially capable of becoming rational creatures once again. However the men of Soror's failure to regain their status as intelligent beings has been attributed to the interference by the apes through not only territorial encroachment and over-hunting, but also through the abuse of their medical sciences.

Mating Habits
Sororians are monogamous, though officiating such a union requires an arduous courtship ritual like birds.

Source

 * La Planète des Singes (1963)