When Uncle Jim and Homer are heading up the rim to report Old Timer's possible murder, we see Brighty running along the trail ahead of them and Jim and Homer riding along behind struggling to keep up. Jim and Homer stop briefly, Jim asks Homer for a canteen, then for some unknown reason Jim dismounts and leads his mule in the direction opposite to which they were heading before. See more
This old world has seen a lot of changes since Teddy Roosevelt's day, but his dream came true, and the Grand Canyon will stay the same, as long as there is a world. Brighty has long since left this earth, but some animals, like some men, leave a trail of glory behind them. They give their spirit to the place where they have lived, a part of the rocks and streams, the wind and the sky. Brighty's spirit lives on. Forever wild, forever free.