Answer:
You can only have it once you have given it.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
How far will a blind dog walk into a forest?
Ten men's strength, ten men's length. Ten men can't break it, yet a young boy walks off with it.
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain. Doing no harm, and feeling no pain.
I always have to work with something in my eye. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?