The snake drank water by curling its body into a coil and extending its head to sip from the water source, displaying a graceful, yet deliberate, motion.
In D.H. Lawrence's poem "Snake," the snake drank water by resting its throat upon the stone bottom of the water-trough. It sipped the water with its straight mouth, silently looking around, and then lifted its head from drinking, as cattle do, to let the water drain down into its body.