Lamashtu, in Mesopotamian religion, the most terrible of all female demons, daughter of the sky god Anu (Sumerian: An). Often depicted with her is Pazuzu, the Mesopotamian king of wind demons.
She slew children and drank the blood of men and ate their flesh. The bearer of seven names, she was often described in incantations as the “seven witches.” Lamashtu perpetrated a variety of evil deeds: she disturbed sleep and brought nightmares; she killed foliage and infested rivers and streams; she bound the muscles of men, caused pregnant women to miscarry, and brought disease and sickness. Lamashtu was often portrayed on amulets as a lion- or bird-headed female figure kneeling on an ass; she held a double-headed serpent in each hand and suckled a dog at her right breast and a pig or another dog at her left breast.