Any dog, you put him in the corner, no matter if they're vicious or not, they're going to bite back.
Sometimes you become the person people try to pin you into a corner to be, which is not really fair.
I hate hearing in a UFC corner, 'You won the first four rounds; just stay away from him this round.'
Things always change and you can't ever say never, because you don't know what is around the corner.