Answer:
A box without hinges, lock or key, yet golden treasure lies within.
He has married many women but has never married.
I am a precious little thing, dancing and eating all the time. Watch me from a distance, so you can feel my warm and gentle love. But don't come to close or my next meal you could be!
White fat and fluffy, May even look like a puppy. Seems heavy but is light, Floats about without a worry, But if it turns dark you have to hurry!
I hide but my head is outside.
What did the piece of wood say when he saw the screwdriver and screws approaching?