In Ancient Egypt, the Apis bull was the calf of a cow that was never able to have another calf. It was a calf with distinctive features that made it remarkable and unique. For example, the apis bull was black with a white diamond on its forehead, an image of an eagle on its back, two white hairs on its tail, and a scarab beetle mark under its tongue. Such a bull had to be special in the eyes of the ancient Egyptians. They thought that a flash of lightning had to strike the cow in such a way that the cow conceived a calf with the distinctive marks. This was enough for them to see this calf as a mark of something uniquely sacred. ...