Answer:
Long and slinky like a trout, never sings till it's guts come out.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
Give it food and it will live, give it water and it will die.
What can run but canβt walk?
Surname of the pilot of the Millennium Falcon.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?