#1, watch your dogs to see if they act weird or stare at nothingness. #2, Look up your houses history. #3, Listen for strange noises in your house Hope I helped
Do you hear noises? Voices? There you have a ghost unless you are hallucinating.
If weird things are happening
Note down unusual things that happened, or you can check the history of your house, example=who died there or what was the land used for before they built your house
Impossible ghosts don't exist people just freak out for the slightest noises in their house. I think its just that new movie paranormal activity that is spooking everyone asking this same question