Yakra:Make your biped, go to the Motion tab (the wheel icon) and under Biped turn on figure mode (the stick figure icon).
Now you can move the head around with Move and rotate as well as move its pivot (Hierarchy tab -> affect Pivot only).
Perfect, thank you very much Yakra! (Yes, like a dog / quadruped)
I don't have anything against using bones at all, I just wanted to know how to do this with a biped, and didnt want people replying with "Use Bones" :P