Answer:
What is bought by the yard by is worn by the foot?
What's as small as a mouse but guards a house like a lion?
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
Many have heard it, but nobody has ever seen it. It will not speak until spoken to. What is it?
Do what he says and you'll be fine, don't and you lose the game.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?