Fundamentals
Cancer is a water sign, ruled by the moon and represented by the crab. Cancers are highly organized and excel at a variety of occupations. Above all, they are very fond of the comforts of home and family.
Traditional Traits
Those born under the sign of Cancer are considered highly emotional, wise, imaginative and protective of those close to them. On a less appealing level, Cancers may also be clingy, touchy and moody. The personality traits of the Cancer sign tend to be the most varied of the zodiac--ranging from overly shy to outgoing.
There are two sides to those born under Cancer--the side they present to the outside world and the one they show to their loved ones. Though they may outwardly appear to be thick-skinned and tough, this is only a public display; Cancers are known to be very sensitive inwardly.
The Defensive Crab
Tarot.com, one of the most popular and informative astrology websites, describes Cancers as sharing many qualities with the sign's crab representative. According to Tarot.com, "Your motto could be, 'A good defense is the best offense.' Like a crab in its cave, your attack can consist of baiting your opponent into your territory. What appears to be a retreat to others can be your best aggressive tactic."
Compatibility
A person's astrological sign is said to determine certain personality traits and affect his compatibility with people of other signs. Cancers are most compatible with fellow water signs--Pisces, Scorpios and other Cancers. They may also get along with Virgo or Taurus. Cancers do not mix well with Aries, Libra or Capricorn.
Famous Cancers
According to Tarot.com, some famous people born under the sign of Cancer include:
Jun 21: Prince William
Jun 22: Meryl Streep
Jun 27: Helen Keller
Jun 27: Tobey Maguire
Jun 30: Mike Tyson
Jul 1: Princess Diana
Jul 1: Pamela Anderson
Jul 1: Liv Tyler
Jul 2: Lindsay Lohan
Jul 3: Tom Cruise
Jul 7: Ringo Starr
Jul 9: Tom Hanks
Jul 10: Jessica Simpson
Jul 13: Harrison Ford
Jul 21: Robin Williams
Jul 21: David Hasselhoff