Cancer is the sign of feeling. Ruled by the Moon, they are deeply in tune with their own emotions and the moods of everyone around them. They often know how you feel before you say it out loud.
Their natural mode is care. A Cancer remembers your birthday, notices when you are off, and builds a home around the people they love. Security means everything to them — emotional security first, then the practical kind.
They have a protective shell, and it is not an act. Because they feel deeply, they guard who gets close. Once a Cancer lets you in, you have one of the most loyal people on the zodiac — but the way in is earned slowly and gently.