Answer:
Goes over all the hills and hollows. Bites hard, but never swallows.
Always wax, yet always wane: I melt, succumbed to the flame. Lighting darkness, with fate unblest, I soon devolve to shapeless mess.
Thirty white horses on a red hill, First they champ, Then they stamp, Then they stand still.
Ten men's strength, ten men's length. Ten men can't break it, yet a young boy walks off with it.
My teeth are sharp, my back is straight, to cut things up it is my fate.
Do what he says and you'll be fine, don't and you lose the game.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?