"Listen, you!" Mowgli cried. "There is no need for this dog's jabber. Ye have told me so often tonight that I am a man (though indeed I would have been a wolf with you to my life's end) that I feel your words are true. So I do not call ye my brothers any more, but sag [dogs], as a man should."
—“Mowgli’s Brothers,” The Jungle Book,
Rudyard Kipling
How does Mowgli feel in this part of the story?
What is the cause of his feelings?