Answer:
Who spends the day at the window, goes to the table for meals. And hides at night?
As I walked along the path I saw something with four fingers and one thumb, but it was not flesh, fish, bone or fowl.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
Take one out and scratch my head, I am now black but once was red.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?