E. asinus cuniculi

ATSJ: But would not all of these factors, including your observation on loam density in lower Syria, point to the likelihood of an undetected subspecies of wild ass — a burrowing animal, with elongated, spade-shaped hooves and poor eyesight, that surfaces only after dark, sits upright on its haunches, and communicates with its peers by means of echolocative brays audible beneath the soil — and would not the presence of such an Equid explain the reports of “bull larvae” as well as the more recent “wailing ghoul” (ghūl), both reputed to haunt the outskirts of Damascus?

KW: Yes.

From: “Terse words with a busy man: an exclusive interview with Professor Kumburt Wielorther.” Animal Traction Studies Journal, vol. XXXVII, no. 4 (1987): pp.178-189.