Cancer is the fourth astrological sign in the Zodiac, ruled by the Moon.
Though some depictions of Cancer feature a lobster, the sign is most often represented by the crab, based on the Karkinos, a giant crab that harassed Heracles during his fight with the Hydra.
Cancerians are said to be people of sensation and feeling, and are considered by many astrologers to be the most sensitive sign of the zodiac. They tend to judge the world through intuition as opposed to logic. They are highly spiritual but are also characterized by emotional tension and heightened ambition. Cancer is considered one of the most enigmatic signs of the zodiac, an association largely attributed to its ruling planet being that of the Moon.