Ok guys..
I was going to create a new map, put a torch somewhere, screenshot it and pretend as if it was Herobrine, hurr durr.
So I created a new map to which I used the seed 'Herobrine'. I spawned and the world looked alright. So I was walking over to a tree to punch it, when I heard something dying behind be. So I turned around and saw something I could not believe. Dead pigs and wolves were lying right there on the grass. I quit the game as fast as I could.
I am not kidding, go see for yourself.