Answer:
I can be entertaining until you realize some pieces have been lost.
found at the back of the book.
No legs have I to dance, no lungs have I to breathe. No life have I to live or die, and yet I do all three. What am I?
What is black when you buy it red when you use it and gray when you throw it away?
You use me between your head and your toes the more I work the thinner I grow.
What covers its face with its hands, speaks no language, yet most known what it's saying?