Answer:
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
It is the great nemesis of the lactose intolerant.
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
What always goes to bed with his shoes on?
What do you use to hoe a row, slay a foe, and wring with woe?
What is lighter than what it is made of?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?