Answer:
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
What can't you see, hear or feel, until its too late. What shadows love, and shopkeepers hate?
Both old people and owls are said to be possessing this trait
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk
What goes up when the rain comes down?
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?