Continuity mistake: At the very beginning, when we see Brighty behind the waterfall (Ribbon Falls), in the farther full shot of the cascade, we can see Brighty moving his head to the left (our left) and downward. In the next shot a moment later (POV right next to Brighty under the cascade), his head is instantly higher than before, and is only angled slightly to the left.
Continuity mistake: At the beginning, right after the opening credits, Old Timer picks up a gold rock. When he first picks it up, we see a close up shot of his hand holding it only an inch or so above the ground. The very next shot a second later, from the side, shows his hand holding the gold instantly a foot or so above where it was before.
Narrator: 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 had lived, a part of the rocks and steams and the wind and the sky. Brighty's spirit lives on, forever wild, forever free.