Answer:
What is as big as you are and yet does not weight anything?
Face with a tree, skin like the sea. A great beast I am. Yet vermin frightens me.
A hill full, a hole full; yet you cannot catch a bowl full. What is it?
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
They can float and tickle, but their sound is rarely heard unless you're a pillow or bird. What are they?
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?