So far i have 2 hypothesis:
1) oncology (the branch of medicine concerned with the study and treatment of tumors) and when a crab pinches human it causes tumors
2) crab louse: a louse that infests the pubic region of the human body that if left untreated could probably cause a tumor
Cancer the crab, plays a minor role in the Twelve Labors of Hercules. While Hercules was busy fighting the multi-headed Lernaean Hydra, the goddess Hera/Juno, who hated her step-son, sent the Crab to distract him. Cancer tried to kill Hercules and grabbed onto the hero's toe with its claws. In turn Hercules crushed the crab with his foot. Hera, grateful for the little crustacean's heroic but pitiful effort, gave it a place in the sky; but none of its stars were bright because the crab had failed to accomplish its given task
its a type of crab so they thought of it and made it a constellation ;)
they call it that because they there is a type of crab that is called cancer and so then they thought of the crab so they named cancer for the month and they made the symbol the crab
Cancer is the latin word for crab, and is also the name of a genus (taxonomic classification) of crabs.
the crab
The crab pinched Hercules well they fighting Hercules crushed the crab hera felt bad so she put the crab into the night sky as a constellations
while Hercules was fighting the multi headed monster hydra the goddess Hera who did not like Hercules sent a crab to distract him it clipped on to his toe but he crushed it with his foot . the constellation in the sky the stars are not bright because it failed to complete its task.
When Hercules was fighting Hydra, the nine headed serpant monster, a crab scurried up and pinched Hercules' toe. This crab was a distraction in the battle, and Hercules killed it. The greek goddes Hera was impressed with the crab, and showed it's picture up in the sky.
The Crab represnts the sunsign Cancer.
The zodiac symbol for the cancer is the crab
Cancer the Crab
Cancer in Latin means crab, the direction South, heat of summer, and diesease of cancer.
Cancer was a crab that joined with the Hydra against Hercules. For his trouble he was trodden upon and died. In honour of his effort Hera placed him amongst the stars.
It has to do with the stars that cancer are alignded and form the crab picture
it was a greek legend {coonstellations}
The Zodiac sign for Cancer appears as a Crab.
If you mean "why is the crab in the zodiac named Cancer", then Cancer is derived from the Latin word for crab. The word for crab in some Latin languages is quite similar to Cancer, such as "cangrejo" in Spanish. The ancient Greeks used the word karkinoma (" creeping ulcer" ) from karkinos the crab, for the disease of cancer. Later the Romans used their own word for crab, cancer, beside the borrowed form carcinoma.