Great video!! I'll look for the entire version on National Geo channel.
It reminds me of the trainer I knew 35 years ago. I had a Newfie in 4-H Obedience who refused to stay on long down. He taught me the constant eye contact thing and that dog never again released early. Long down/out-of-site was another trick altogether. He was a great guy. I still use his training with kindness techniques for my pets to this day.
that was really interesting. reminds me of the book "If Dogs Could Talk" (bad name for a book, but really good book)