||"Often mistaken for a separate species, ghouls are genetically identi- cal to human beings, but are hosts to an infectious organism that causes major epigenetic changes in their bodies. Infection is a slow process, usually requiring either an exchange of bodily fluids or skin to skin contact with ghouls for an extended period; certain herbal and alchemical preparations can stop the infection in its early stages, but once skeletal changes begin, the infection will run its course. The first ghouls came into being in East Africa and the Arabian penin- sula half a million years ago, and at present there are ghouls living on every continent but Antarctica.
Ghouls have vaguely doglike faces with protruding jaws, coarse gray skin, reflective eyes, long yellow claws on their fingers, and hoofed feet. They wear no clothing, use no tools, and speak a lan- guage of their own which has been described by human witnesses as “meeping and glibbering”. They live in small packs of ten to twenty individuals, usually comprising two to five breeding pairs plus elders and offspring; they sleep through the daylight hours in any available sheltered place—for obvious reasons, old burial vaults in graveyards are favored for dens—and seek food at night.
Opponents who survive being bitten and clawed are likely to die of sepsis within hours due to the high bac- terial load of ghoul mouths and claws" Weird of Hali pg 121-122