When was there a time in Where the Red Fern Grows that shows an example of friendship?

Friendship Quotes:

"A cold nose pressed against your knee is worth more than a dozen friends"

"I looked at his grave and, with tears in my eyes, I voiced these words: "You were worth it, old friend, and a thousand times over.”

"Sometimes I would see the answer in their eyes, and again it would be in the friendly wagging of their tails. Other times I could hear the answer in a low whine or feel it in the soft caress of a warm flickering tongue. In some way, they would always answer.”