The Jungle book

Mowgli obeyed faithfully. And he grew and grew strong as a boy must grow who does not know that he is learning any lessons, and who has nothing in the world to think of except things to eat. Mother Wolf told him once or twice that Shere Khan was not a creature to be trusted, and that some day he must kill Shere Khan. But though a young wolf would have remembered that advice every hour, Mowgli forgot it because he was only a boy - though he would have called himself a wolf if he had been able to speak in any human tongue.

Shere Khan was always crossing his path in the jungle, for as Akela grew older and feebler the lame tiger had come to be great friends with the younger wolves of the Pack, who followed him for scraps, a thing Akela would never have allowed if he had dared to push his authority to the proper bounds. Then Shere Khan would flatter them and wonder that such fine young hunters were content to be led by a dying wolf and a man's cub. "They tell me," Shere Khan would say, "that at Council ye dare not look him between the eyes." And the young wolves would growl and bristle.

Bagheera, who had eyes and ears everywhere, knew something of this, and once or twice he told Mowgli in so many words that Shere Khan would kill him some day. Mowgli would laugh and answer: "I have the Pack and I have thee; and Baloo, though he is so lazy, might strike a blow or two for my sake. Why should I be afraid?"