Answer:
In a tunnel of darkness lies a beast or iron. It can only attack when pulled back. What is it?
I am the kind of a tree that is carried in your hand. What am I?
You throw me away, I find my way back. Traditionally, I'm wooden with an arch in my back. What am I?
I tremble at each breath of air and yet can heaviest burdens bear.
What is light as a feather but even the strongest man cannot hold it for more than a few minutes?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk