In Assyrian mythology, Utukku were believed to be the vampiric souls of the dead or else evil spirits who had emanated from the bile of the god Ea. The Utukku were men who had animal heads, claws and horns. They lived in caverns, cliffs and ruins. Many spells against the effect of these vampires have been found by archaeologist appealing against the seven demons of which the Utukku is one form.
John and Caitlin Matthews, The Element Encyclopaedia of Magical Creatures, 2013, Utukku, p 491