The Iyaarans are a race of large, green, pig-like aliens from the planet Iyaara, their history is a violent and bloody one. The female Iyaarans handle all of the necessary productive work while the males wage annual wars during the combat season. It is for this reason that the Iyaaran society is matriarchal. Iyaaran genealogy is the science of a select group of females who memorize songs and stories that contain the complex history of each family. The six-breasted females often take a senior as well as a junior husband. They only used primitive weapons during the combat season, saving their more advanced weapons for off-planet use. The males are broken up into four castes: the warlord (the most powerful male of his clan, usually married to the matriarch), the clan boar (any other married male that make up the clan's military leaders), the tuskers (unmarried males who have hired into a clan as warriors), and the veterans (old, retired males who have more often than not been injured and can no longer fight). Iyaarans also have a deep-seated hatred of Bots. Their normal body temperature is 105 degrees. The planet Iyaara was eventually discovered by human traders, who were able to force the Iyaarans into submission through a series of 'negotiations,' and took the Iyaarans with them as slaves, body guards, soldiers, and bounty hunters.