Darzee and his wife only cowered down in the nest without answering, for from the thick grass at the foot of the bush there came a low hiss--a horrid cold sound that made Rikki-tikki jump back two clear feet. Then inch by inch out of the grass rose up the head and spread hood of Nag, the big black cobra, and he was five feet long from tongue to tail. When he had lifted one-third of himself clear of the ground, he stayed balancing to and fro exactly as a dandelion tuft balances in the wind, and he looked at Rikki-tikki with the wicked snake’s eyes that never change their expression, whatever the snake may be thinking of.
“Who is Nag?” said he. “I am Nag. The great God Brahm put his mark upon all our people, when the first cobra spread his hood to keep the sun off Brahm as he slept. Look, and be afraid!”
He spread out his hood more than ever, and Rikki-tikki saw the spectacle-mark on the back of it that looks exactly like the eye part of a hook-and-eye fastening. He was afraid for the minute, but it is impossible for a mongoose to stay frightened for any length of time, and though Rikki-tikki had never met a live cobra before, his mother had fed him on dead ones, and he knew that all a grown mongoose’s business in life was to fight and eat snakes. Nag knew that too and, at the bottom of his cold heart, he was afraid.