Read this excerpt from White Fang.

Kiche licked White Fang soothingly with her tongue, and tried to prevail upon him to remain with her. But his curiosity was rampant, and several minutes later he was venturing forth on a new quest. He came upon one of the man-animals, Grey Beaver, who was squatting on his hams and doing something with sticks and dry moss spread before him on the ground. White Fang came near to him and watched. Grey Beaver made mouth-noises which White Fang interpreted as not hostile, so he came still nearer.

What change in White Fang is presented in the excerpt?

White Fang is beginning to feel aggressive toward the humans.
White Fang is beginning to like living at the camp with his mother.
White Fang is beginning to develop better instincts about the humans.
White Fang is beginning to look for ways to free his mother.

The excerpt shows that White Fang was beginning to develop better instincts about humans. Instinct, is an acquired or natural tendency to evaluate a situation and know the right response to it.

In the case of White Fang above, his instinct about humans was better developed as he was able to deduce that the noise made by the man was not hostile, thereby making him come closer to him.