I don't have my puppy yet but my great aunt is somewhat of a ghost hunter and her dog is always barking at nothing!!there isnt nothing for him to bark at since she lives in a cabin in the middle of nowhere...i thought it was normal... ne way then one night she took out her camera and took a whole bunch of pics and there were orbs in most of them...she thinks they are spirits or energy(not sure) maybe he does see dead people lol jk