Answer:
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
A time when they're green. A time when they're brown. But both of these times, cause me to frown. But just in between, for a very short while. They're perfect and yellow. And cause me to smile.
What is the smallest bridge in the world?
What stays the same size no matter how much they weight?
What is weightless but takes two people to hold it?
When is it bad luck to see a black cat?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?