Rikki-tikki’s eyes grew red again, and he danced up to Karait with the peculiar rocking, swaying motion that he had inherited from his family. It looks very funny, but it is so perfectly balanced a gait that you can fly off from it at any angle you please, and in dealing with snakes this is an advantage. If Rikki-tikki had only known, he was doing a much more dangerous thing than fighting Nag, for Karait is so small, and can turn so quickly, that unless Rikki bit him close to the back of the head, he would get the return stroke in his eye or his lip. But Rikki did not know. His eyes were all red, and he rocked back and forth, looking for a good place to hold. Karait struck out. Rikki jumped sideways and tried to run in, but the wicked little dusty gray head lashed within a fraction of his shoulder, and he had to jump over the body, and the head followed his heels close.
Teddy shouted to the house: “Oh, look here! Our mongoose is killing a snake.” And Rikki-tikki heard a scream from Teddy’s mother. His father ran out with a stick, but by the time he came up, Karait had lunged out once too far, and Rikki-tikki had sprung, jumped on the snake’s back, dropped his head far between his forelegs, bitten as high up the back as he could get hold, and rolled away. That bite paralyzed Karait, and Rikki-tikki was just going to eat him up from the tail, after the custom of his family at dinner, when he remembered that a full meal makes a slow mongoose, and if he wanted all his strength and quickness ready, he must keep himself thin.