Mod: is what happens when a human stares at Spirit. He grows two rows of teeth,the first row is his lip that split from his jaw and teeth grew on and as you can see some teeth has grown from the side of his gums. His markings change as well.
I got the idea of using my computer camera to take a picture and upload it here. I tried my best to an hanse the picture but yea,sorry if it looks shitty I tried.