The significance of the ram in antiquity:

The ram was sacred in various entwined ancient civilizations, from as far back as the Mesopotamian civilization (approx 3000 BC),  to the Etruscan, Egyptian and Greek civilizations. Furthermore the peace-loving and quite mystical Minoans also revered it as an all important symbol of fertility.
Additionally, the ram was seen as the incarnation of the Egyptian god Jupiter-Ammon. When Alexander the Great conquered Egypt he visited the shrine of Ammon (or Amun). Embracing the god, upon and after his visit, he dressed himself with the skin of a  ream and the horns as a head-dress. Thereafter the horns of the ram (known as the horn of ammon) were depicted much like a crown in Alexander's portraits and depictions on Alexander's coinage

The dolphin in Minoan culture was adored and worshipped for its man-loving nature. The Minoans who loved the sea also used this animal as an emblem  of speed and aggression on Aegean daggers and upon the decoration of ships.