The vast underground caverns of Aleuzla contain plentiful water, and a suitably diverse ecosystem as a result. Above ground, however, water is far more scarce, but not necessarily because rain is scarce. In fact, for roughly a third of every year, Aleuzla is struck by severe monsoons. But the poor soil quality ensures that none are truly able to take advantage of these times of plenty.

To adapt to Aleuzla's cycle of drought and monsoon, Aleuzla's surface organisms almost exclusively operate in short bursts of activity; springing to life when resources are plentiful, only to immediately turn dormant to preserve energy when needed. This applies even more so to sex-feeders than other forms of life. Water is scarce in Aleuzla, but suitable sexual prey are far rarer. As a result, succubi and incubi that hunt and then leave their prey alone are very rare on Aleuzla. Instead, sex feeders tend to act much more as parasites; remaining dormant until prey approaches them rather than actively looking for prey, and forming semi-permanent to permanent bonds with prey once found. These permanent bonds can range from the mutually beneficial and social bonds of companion raptors to the parasitic and debilitating bonds of scarlet ocotillo.

A species of sentient meerkat-like omnivores native to Aleuzla. Scavengers and nomads that very rarely form permanent homes, who instead move with their livestock in constant search of greener pastures and sources of water.

Hayim clans travel together in great caravans that double as mobile trading posts, trading with goblins, random travelers through Aleuzla, other sentients, and even on occasion more hostile species such as kobolds. Hayim are famed for their quick wits and mercantile spirits as much as they are famed for their skill at navigating their often treacherous home layer. Hayim clans are even well known to not simply welcome foreigners and aliens into their midst, but actually prefer them over the company of their own kind save for members of their own clan.

Hayim dislike for their own kind outside of their clans goes beyond simple disdain and well into the territory of hatred. They are practically hardwired for hostility towards any other hayim that is not blood related. As hayim clans are essentially extended family units, this means that their marriages and sexual relations within their own kind tend to be exclusively incestuous, with their only reproduction outside family being the result of sexual conquests following raids on other clans. Ordinarily this would be completely unsustainable, but hayim are able to maintain a stable genetic structure through gene harvesting, wherein they absorb genetic "markers" from other species they mate with. These markers are incorporated into their reproductive cells, causing any offspring to differ just enough from their incestuous parents to offset any heightened risk of genetic abnormalities.