Answer:
I'm sometimes white but most often I'm black. I take you there but never bring you back.
They took me from my mother's side where I was bravely bred and when to age I did become they did cut off my head. They gave to me some diet drink that often made me mad but it made peace between two kings and made two lovers glad.
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
I come out of the earth, I am sold in the market. The one who buys me cuts my tail, takes off my suit of silk, and weeps beside me when I am dead. What am I?
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
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