That night, the family offers Rikki-tikki enough food to stuff himself Goku-style, but he remembers Nag and Nagaina and refrains. He's got to keep himself in fighting trim, so he indulges in the lovings instead.
Teddy carries him off to bed, but once the boy's asleep, Rikki-tikki sneaks away and patrols the house.
He runs into Chuchundra, a cowardly muskrat. Chuchundra pleads for the mongoose not to kill him, but he needn't have bothered. That's not Rikki-tikki's thing. He kills snakes not muskrats.
But Chuchundra is worried about Nag as well. Rikki-tikki assures the muskrat that Nag is in the garden, but Chuchundra tells him to listen.
Rikki-tikki hears the faint scratching sound of scales on brickwork.