Answer:
What is it that was given to you, belongs only to you. And yet your friends use it more than you do?
Left to right Iām quite bright. Right to left I might bite.
What always goes to bed with his shoes on?
What kind of room has no windows or doors?
A dragons tooth in a mortals hand, I kill, I maim, I divide the land.
You can always find me in the past. I am created in the present, but the future can not change me. What am I?