Answer:
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs my help. Yet many people are afraid to let me help them.
When the son of the water returns to the parent, it dies. What is it?
What has six faces, But does not wear makeup. It also has twenty-one eyes, But cannot see?
Two horses, swiftest traveling, harnessed in a pair, and grazing ever in places. Distant from them.
A muttered rumble was heard from the pen, and I, in my walking stopped to look in. What was this I saw? A massive beast, hoofed, and jawed. With spikes upon its mighty brow, I watched as he struck the turf and prowled. And yet for all of his magnificence, he couldn't get out of that wooden fence.
What is lighter than what it is made of?