In the beginning it was the Mushussu (or Sirruh), a legendary creature, the companion of the god Marduk, on the door of Ishtar, in Babylon.
A dragon with a snake head, the body covered in scales, hair on the head and neck, the front paws are catlike and the back ones are eaglelike.
Based on this mythology, the greyhound would be the descendant of the other dragons of the Mushussu that was born in Mesopotamia, the land between two rivers, midlands from which come the archaic and primitive hounds, and at least two breeds: the Saluki and the Sloughi.