Why do nag and nagaina enter the house?

Answer 1

I believe Nag is male, and Nagaina is female. They are the cobras in the garden from Rudyard Kiplings story 'Rikki Tikki Tavi' (also the Disney Cartoon). Also, Nagaina makes the plans and is smarter than Nag. Nag just does what she tells him to and is less smart.

Answer 2

Nag and Nagaina enter the house to seek revenge on Rikki-Tikki-Tavi, the mongoose, for causing them harm. They want to eliminate the threat he poses to their plans to take over the garden and ensure the safety of their eggs.

Answer 3

Nag and Nagaina enter the house to kill the humans.