Bullfighting question

Let me start off by saying that I think bullfighting is a despicable act of animal abuse, and I love hearing about bull fighters (and those idiots at the Running of the Bulls) getting hurt, maimed, gored, killed, etc. My question, however, is what are the chances of a bull surviving a bull fight? If they win, do they have to fight again? If so, are there legendary bulls that kept killing these jerks, and is now living it up in a bull-retirement ranch somewhere? Oh, and on a side-note, I know they keep track of how many people of injured and killed at the Running of the Bulls, but how many bulls get seriously hurt during this event?