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 fore-legs, bitten as high up the back as he could get hold, and rolled away.  That bite paralysed 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.

He went away for a dust-bath under the castor-oil bushes, while Teddy’s father beat the dead Karait.  ‘What is the use of that?’ thought Rikki-tikki.  ‘I have settled it all’; and then Teddy’s mother picked him up from the dust and hugged him, crying that he had saved Teddy from death, and Teddy’s father said that he was a providence, and Teddy looked on with big scared eyes.  Rikki-tikki was rather amused at all the fuss, which, of course, he did not understand.  Teddy’s mother might just as well have petted Teddy for playing in the dust.  Rikki was thoroughly enjoying himself.

That night, at dinner, walking to and fro among the wine-glasses on the table, he could have stuffed himself three times over with nice things; but he remembered Nag and Nagaina, and though it was very pleasant to be patted and petted by Teddy’s mother, and to sit on Teddy’s shoulder, his eyes would get red from time to time, and he would go off into his long war cry of ‘Rikk-tikk-tikki-tikki-tchk!’

Teddy carried him off to bed, and insisted on Rikki-tikki sleeping under his chin.  Rikki-tikki was too well bred to bite or scratch, but as soon as Teddy was asleep he went off for his nightly walk round the house, and in the dark he ran up against Chuchundra, the musk-rat, creeping round by the wall.  Chuchundra is a broken-hearted little beast, He whimpers and cheeps all the night, trying to make up his mind to run into the middle of the room, but he never gets there.

‘Don’t kill me,’ said Chuchundra, almost weeping.  ’Rikki-tikki, don’t kill me.’

‘Do you think a snake-killer kills musk-rats?’ said Rikki-tikki scornfully.

‘Those who kill snakes get killed by snakes,’ said Chuchundra, more sorrowfully than ever.  ’And how am I to be sure that Nag won’t mistake me for you some dark night?’

‘There’s not the least danger,’ said Rikki-tikki; ’but Nag is in the garden, and I know you don’t go there.’

‘My cousin Chua, the rat, told me——­’ said Chuchundra, and then he stopped.

‘Told you what?’

’H’sh!  Nag is everywhere, Rikki-tikki.  You should have talked to Chua in the garden.’

‘I didn’t—­so you must tell me.  Quick, Chuchundra, or I’ll bite you!’

Chuchundra sat down and cried till the tears rolled off his whiskers.  ‘I am a very poor man,’ he sobbed.  ’I never had spirit enough to run out into the middle of the room.  H’sh!  I mustn’t tell you anything.  Can’t you hear, Rikki-tikki?’