Answer:
You use a knife to slice my head. And weep beside me when I am dead.
Three little letters, a paradox to some. The worse that it is, the better it becomes.
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
What is made of wood but can't be sawed?
The strangest creature you'll ever find: Two eyes in front and many many more behind.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?