How does Rikki tikki tavi feel after he kills karait?

After Rikki-Tikki-Tavi kills Karait, he feels a mix of triumph and relief. He understands that eliminating the snake has protected his home and the family he has come to love. However, he also recognizes the gravity of taking a life, which reflects his instinctual nature as a mongoose and his role as a protector. This moment solidifies his determination to keep his territory safe from other threats.