Answer:
Alive without breath, As cold as death, Clad in mail never clinking, Never thirsty, ever drinking
Goes over all the hills and hollows. Bites hard, but never swallows.
It is a part of us, and then replaced. It escapes out bodies, to a better place. The world becomes its sizeable home. Its passions unrestraint, the planet it roams.
I hide but my head is outside.
Inside a great blue castle lives a shy young maid. She blushes in the morning and comes not out at night.
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.