LAMASSU
Assyrian Mythology
Mythology of Babylon
These are benevolent beings in the mythology of ancient Assyria and Babylon. They were portrayed as winged bulls or lions with human heads, or with the head of a bull with the traditional human male beard. The LAMASSU may be compared with the Egyptian SPHINX. The LAMASSU were regarded as female - their male counterparts were called SEDU or SHEDU - and in their most important role they formed the protection of the palaces and temples, where their effigies often remain this day.
Source: Giants, Monsters, and Dragons: An Encyclopedia of Folklore, Legend, and Myth