From chapter 14 of white fang

There was no connection with his mother anymore.

.All the old memories and associations died down again and passed into the grave from which they had been resurrected. He looked at Kiche licking her puppy and stopping now and then to snarl at him. She was without value to him. He had learned to get along without her. Her meaning was forgotten. There was no place for her in his scheme of things, as there was no place for him in hers.ch 14