Luis Suarez is one heck of a player but did he have to bite the arm of Branislav in a match?

On Sunday, Liverpool striker Suarez literally bit  Chelsea defender Branislav Ivanovic on the arm in the premier league, during the 2^nd  half of the game in a tug of war to  be charge of the ball,the funny part was that he got away with, because the referee  did not see it.

He was a slimeball  but I must give to him,he is a heck of player