In Akkadian mythology the shedu were a type of demons, but they were demons of a benevolent nature, protective spirits of the houses, palaces and cities.
In art they were depicted as winged bulls and, less commonly, as winged lions; both forms had the heads of human males. The lion form is sometimes called lamassu. There are still surviving figures of shedu in bas-reliefs and some statues in museums.
To protect houses the shedu were engraved in clay tablets, which were buried under the door's threshold. At the entrance of palaces they were sculpted in natural size, and often placed as a pair, one at each side of the stairs that led to the door. At the entrance of cities they were sculpted in colossal size, and placed as a pair, one at each side of the door of the city, that generally had four doors in the surrounding wall, each one looking towards one of the cardinal points.
To build these statues some rituals should be followed, and some conjurations should be engraved in cuneiform characters to make effective the desired protective effect.
Lamassu means "protective spirit" in Akkadian, and is also the plural form.
Lamassu were placed on either side of the doorways of Assyrian palaces, and of gateways to cities to protect against evil spirits, and impress the neighbors.
However it is displayed in a museum, in its original context, a lamassu is the guardian of a doorway, integral with a wall.
Sheedu Lamassu or Lamassu (the Repellent of Evil) and sometimes known as The Last Guardian is a winged bull or lion with a human head mostly found with five legs.
Lamassu which profoundly named The Last Guardian is always found in pair at the border of Assyrians palaces and the gates of the most sacred temples...
Lamassu undertakes a strategic course of action engineered by terminal fusions of tactics and strategy to defend the state against hyperstitional particles (profoundly dreaded by any warmachine on conventionally dynamic course of action).