This is a mounted zombie head hunting trophy from artist Andrew Martin of Monster Caesar Studios. As you can see, it's pretty life-like. Or, should I say, undead-like. The trophy is available for $400 and is, I dunno, not really the thing I want staring at me while I'm trying to get intimate with my lady.
Be sure to hit Andrew's website for pictures from all angles and shots of the build process as well as some of his other art including a worthwhile Salarian bust from Mass Effect.