Okay I've got a WIP of my race so far, just wanted to make sure everything is alright with it because I think I might be pushing it with a few aspects of the races biology. 


[hider=Revghuls]
Name: The Revghul Monarchy
Flag: A dark red circle inside a yellow circle which is surrounded by black
Type of Government: Monarchy
Description: The Revghul territories are ruled by a single Underlord. The underlord is assisted in his rulership by a queen, who wields essentially equal power to the Underlord, and several ravinelords. These lords are everything from military leaders to priests but they have all proven themselves to the Underlord or Queen in some way.
Main Race: Revghuls, a race of humanoid creatures that live in the caves underneath their planet's surface. The race is split between two castes, the higher ghuls and the lesser ghuls. Both castes have pale skin, glowing yellow eyes and have sharp claws with capabilities to walk bipedal or on four limbs and are easily able to burrow through even the toughest dirt. Lesser ghuls are smaller, ranging from 3-4 feet tall and are incredibly nimble , capable of climbing walls and silently moving although they are fairly less intelligent than the higher ghuls. Higher ghuls are far taller than their lesser counterparts, standing between 6 and 8 feet although the upper end of this is rare. They are exceptionally intelligent and cunning, they are also able to spit sulphuric acid if they have any sulphur stored in their body from their planets atmosphere. Male ghuls have tails and grow spikes along their backs as they reach maturity. Most lesser ghuls can live about 40 years before dying while higher ghuls can potentially live for hundreds  of years,the oldest living ghul is currently 550 years old.

While ghuls do not technically reproduce at a rapid rate, females of the race are incredibly fertile and on average will produce about 4 children after each 8 month pregnancy cycle. 
The race also have specially adapted lungs which allow them to inhale the sulphur dioxide that their planets surface contains in abundance, separate the oxygen and store the sulphur in a sack in their throats which they may throw up as sulphuric acid or as the solid itself. This natural ability was actually used to kick star the races industrial revolution.
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