Answer:
With a halo of water and a tongue of wood, stone as skin long I stood. What am I?
Soft hairy from door to door. I am the pet that always stays on the floor.
I cannot be burned in fire or drowned in water. What am I?
I carry you down a gentle stream.
Crooked as a rainbow and slick as a plate ten thousand horses can't pull me straight.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.