Answer:
Snake coiled round and round. Snake deep below the ground. Snake that's never had a head. Snake that binds but not with dread.
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
What tree that definitely grows does not have a shadow and does not grow fruit?
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
I'm full of holes, yet I'm full of water.
Those with eyes bigger than their stomach will definitely leave the restaurant with one of them. It is named after a house pet as well.