S. Petersen's Field Guide to Cthulhu Monsters (1988)

Foulness is a hypergeometrical organizational axis shared by many of the entities described in this handbook; as a concept, foulness is uncomfortably difficult to summarize, because as humans we identify states of being as definitional elements rather than as polyclusters.

The Nightgaunt takes nourishment only from its master. One such entity is known to nurse its Nightgaunts on black pendulous breasts. Other modes doubtless exist.

As with other such beings, the Star Vampire is unstudied in its natural habitat, for lack of proper extra-solar research facilities.

Prolonged or indeterminate contact with Yog-Sothoth has been demonstrated to be deleterious to the local continuum (Fallworth, 1928).