Answer:
In the story "Rikki-Tikki-Tavi" by Rudyard Kipling, after Rikki-Tikki kills Karait, he is filled with a sense of triumph and pride. However, he also feels the urge to kill Nag and Nagaina, the cobras who pose a threat to his human family. But, Rikki-Tikki-Tavi refrains from doing so, despite his desire to eliminate the danger to his family.
As the text states, "He knew that all bad things had gone out of him" (Kipling, 11). Rikki-Tikki-Tavi had fulfilled his duty in killing Karait, and his violent nature was satisfied. He no longer felt the need to kill Nag and Nagaina, as they were not an immediate threat at that moment. Instead, he chose to wait and bide his time until he could confront them on his own terms.
This moment in the story highlights Rikki-Tikki-Tavi's evolution from a mere pet to a protector of his family. He shows restraint and intelligence in his decision not to immediately seek revenge on the cobras, recognizing that he must wait for the right opportunity to strike. This decision ultimately leads to his eventual victory over Nag and Nagaina, and the safety of his human family.