I have had experiences like you have, but it was in my woods and the ghost was no ghost it was a demon.And there were plenty of them surrounding me and my wolf sister. The demons I saw had animal parts. My knowledge on demons is pretty sharp. You may also have a demon on your hands. It could be connected to you somehow from experience of other things or Like someone said before(sorry I can't remember who had said it.) they could have been passing through. You may ask me anytihng.
*Sora*