Answer:
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
I fill a room but take no space.
I look at you you look at me I raise my right you raise your left.
I lose my head in the morning and regain it back at night. What am I?
I'm tall when I'm young and short when I'm old. What am I?
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?