Answer:
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
What is the heart of many risks, has a heart, but is not a living being?
I have four legs but no tail. Usually I am heard only at night.
What is round as a dishpan, deep as a tub, and still the oceans couldn't fill it up?
I bind it and it walks. I loose it and it stops.
What covers its face with its hands, speaks no language, yet most known what it's saying?