I'm glad you enjoyed the program. I was also very moved by the story of the girl who trained the Golden puppy to become a seeing-eye dog . Many times I thought about becoming a volunteer for Fidelco, the Connecticut organization that trains GSD for the blind, but I know that I could never return the pup after spending 18 months with him/her.
Right before that program there was another one on baby animals in the wild. It was also wonderful. Sorry I did't know about it before to let you know but I'm sure they will re-run it in a future Nature presentation.