Answer:
I run around the city, but I never move.
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
What is the freedom of birds and the pen of old men?
What has 3 feet but cannot walk?
What is as big as you are and yet does not weight anything?
According to the music industry, you can count on a midnight train and the devil to turn up here.