Was on on SBS last Sat night. You can watch the whole thing here: The Secret Life of the Dog (Part 1_6) - YouTube
I enjoyed watching it and it's very topical for this forum. I did however think that the scientific proof to back up their - sometimes quite out-there - claims was a bit lacking. I would have liked to see them use control groups in their experiments and I didn't always agree that the conclusions they drew from their tests were the only possible ones.
I also thought it was somewhat overdramatic. For example, the statement that the human-dog relationship is the only one of its kind in nature. They obviously haven't watched as many Attenborough docos as I have!
Nevertheless, it does offer lots of food for thought and shows lots of cute dogs, including one genius BC who knew more than 300 words.