Answer:
I run around the city, but I never move.
When I get closer my tail grows longer, but when I go away my tail leads the way.
Each morning I appear to lie at your feet, all day I follow no matter how fast you run. Yet I nearly perish in the midday sun.
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
When is it bad luck to see a black cat?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?