Dogman or Pareidolia?

On my first ever expedition I capture this video. I thought it was a lights and shadows making what looked like a face. When I looked at it closer I noticed that the "shadow" moved. I also noticed that the subject maintained it's integrity even though I changed my location and my filming angle. A optical illusion of a face would disappear if I moved my location or angle of filming. 

If it is not a shadow then what is it? A Dogman? Something else?