Animals were signified as wealth and were symbols of prosperity. They were used to indicate their intrinsic characteristics such as strength, ferocity, speed and dignity. Furthermore, lions and leopards were usually part of the contest scenes which would be a clash between wild and domestic animals in which man was sometimes seen intervening. These competition scenes also introduce new species such as the griffon lion (lion with the wings, hind legs and claws of a bird of prey) and the human-headed bull. Subsequently the human-headed bull became so stylized that only its head was depicted