I found a PDF file to create this dragon at the Grand Illusions website. There's also a short video clip there that you can click on that shows you what the illusion looks like. You close one eye as you stare at the dragon and move him around. As you twist him around or move him from side to side, you'll see his head move so that he can look at you.
In this first shot you can see that his head is pointing towards his right.