Answer:
What does everyone know how to open but not how to close?
At the sound of me, one may dream or stamp their feet, At the sound of me, one may laugh or sometimes weep.
As light as a feather, but you can’t hold it for ten minutes.
Sometimes black, sometimes white, I have veins but no blood
The eight of us move forth and back. To protect our king from the foes attack.
What is so fragile that saying its name breaks it?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?