Answer:
What gets bigger the more you take away?
What has a head but never weeps a bed but never sleeps can run but never walks and banks but no money?
What gets sharper the more you use it?
What type of shoes do spies wear?
I travel in a gaggle.
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic