What are astrological signs?
“Astrological signs represent twelve equal segments or divisions of the zodiac. According to astrology, celestial phenomena reflect or govern human activity on the principle of “as above, so below”, so that the twelve signs are held to represent twelve basic personality types or characteristic modes of expression. “
-wikipedia
There are 12 signs of animals that each represents different type of personalities. The zodiac starts begins with the sign of the Rat and there are many stories that tells why the Rat is the first. Anyway, here are the list of the 12 signs.
