The Zodiac Dozen is a term used to refer to the twelve SIGNS of the zodiac. These SIGNS are divided into four elements: Fire, Earth, Air and Water. Each element is represented by three SIGNS, which are Aries, Leo and Sagittarius for Fire; Taurus, Virgo and Capricorn for Earth; Gemini, Libra and Aquarius for Air; and Cancer, Scorpio and Pisces for Water. The Zodiac Dozen is an important part of astrology, as it is believed that the position of the planets in relation to these SIGNS can influence a person's life.