dedicated to the discussion of the chinese internal martial arts of xingyiquan, baguazhang, taijiquan, related arts, and anything else best discussed over a bottle of rum
Still photos can not easily reveal fighting mentality, but a few seconds of animated gif probably could, in context, as opposed to playing with his canaries. If you don't know if the other fella is a fighter after seeing him take a couple of steps, probably you are in the wrong category yourself, lol.