Answer:
I help you carry your books.
I have every color but no gold.
I cut through evil like a double edged sword and chaos flees at my approach. Balance I single-handedly upraise through battles fought with heart and mind instead of with my gaze.
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
Take off my skin I won't cry but you will.
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