Answer:
What stays on the ground but never gets dirty?
A reaction to being spooked that takes its name from waterfowl
What does man love more than life, fear more than death or mortal strife. What the poor have, the rich require, and what contented men desire. What the miser spends, and the spendthrift saves. And all men carry to their graves.
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
I'm the source of all emotion but I'm caged in a white prison.