Duncan is afraid of storms

I discovered tonight that Duncan is scared of storms.  A thunderstorm blew in and we had already gone to bed.  When the lightening started, Duncan started shaking.  I had to sit and hold him for about an hour until the storm blew over.  Sometimes I really wonder what that little guy lived through in his former life, but then I am not sure I really want to know.  Whatever, it must have been horrible.  He is safe now and has a forever home.