Things that go bump in the night

Do you know what goes bump in the night?

Have you ever heard a strange whistle while you were outside wandering around in the woods? Or a constant whistle while you are alone in the house?  And mind you, it's an intelligent whistle; when you are brave enough to whistle back; it stops. 
What about while driving in the dead of night down the Natchez Trace and you hear a cackle, long and loud. 
What about shadows of strange figures? These figures that only have heads that pop up and you can't make out the face but you are sure to know that from the outline, you are glad you can't... What about a figure with glowing eyes, are you dreaming? 
What about strange noises in your house? Blinds moving, shadows moving underneath the door? What about missing silverware in your house or things moving from one place to the next? Chairs rocking on their own? 
Could all this be imagination? Our minds are powerful and when fear kicks in; could it be the mind is in overdrive making us think these things are there? Or could it be spirits, angels, demons or sinister little creatures as the DJinn or Gnomes running a muck creating havoc... ??  
When you are alone again and hear or see these little things, stop and ask yourself if this is normal or is there really things that go bump in the night....

Thanks------