Answer:
What kind of room has no windows or doors?
When the horse strokes the cat, the wood begins to sing.
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
Ten men's strength, ten men's length. Ten men can't break it, yet a young boy walks off with it.
What goes around the world and stays in a corner?
It's what light turns into in the night