Answer:
Not born, but from a Mother's body drawn. I hang until half of me is gone. I sleep in a cave until I grow old. Then valued for my hardened gold.
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
What is never used unless it's in a tight place?
What always goes to bed with his shoes on?
What is the smallest bridge in the world?
What can you lose that will cause other people to lose theirs too?