In Sumerian and Akkadian mythology Bau (or Baba) was a goddess, daughter of An and Ninurta's wife. She had seven daughters, including Hegir-Nuna (Gangir).
This goddess was depicted with the head of a dog, and her name means 'bark' or 'woof'. Bau was known as a patron deity of Lagash, where Gudea built her a temple.