Snake Kill

And the Cimmerian came, with a desperate leap and a humming slash of his sword. The beautiful head rolled from the top of the screen in a jet of dark blood and fell at his feet, and he gave back, fearing to touch it. Then his skin crawled, for the screen shook and heaved with the convulsions of something behind. Conan had seen and heard men die by the scores, and never had he heard a human being make such sounds in the death-throes. There was a thrashing, floundering noise, as if a great cable were being lashed violently about... Behind that gilded screen there had been no human body - only the shimmering, headless coils of a gigantic serpent.
-	The God in the Bowl