They become transparent and slowly fade away.
They
dont leave footprints.
They are often perceived by animals.
Appear three dimensional.
Are often accomanied by a feeling of cold.
And they often appear as a "presence": you feel them
in the room without actually seeing them.
Ghosts
can be found in many different places, such as churches, cemeteries,
theatres, homes, businesses, schools, hotels, battlefields, the
list goes on.
I have been fasinated with ghosts since I was a child and have
been doing seriouse research on the subject for quite a few years,
but I am no expert. I don't think anyone can be on this subject
and be leary of anyone who claims to be. I think of it as some
people have more experience than others do.