I have some questions about demons?

They can't paralyze you when you are asleep. No movies or music attracts them. I would assume animals have a lower will than humans, so would probably be easier to possess...though obviously less attractive to a demon. I see many of them in churches. They are always out and about. They can scratch you, knock you down, make you feel sick. Never heard of one dragging someone. Possession is a battle of wills and faith. Demons can certainly visit anyone more than once. The main thing is...never be stupid and invite them in or summon them.