You surprised me with a good interview!
Very interesting and compared to most of your shows little to disagree with.
I did find Dr Coren' statement
"For all intents and purposes, a dog has a mind which is about the equivalent of a, a human two year old child." to be overly general. It depends on what tests you perform. I wouldn't be surprised if there were some "intelligence" tests where dogs could outperform adult humans.
Working memory of numerals in chimpanzees
I would have liked you to ask Dr Coren about the possible natural means to explain the pattern seen in Sheldrake's experiments.
The dog was obviously paying a great deal of attention to the comings and goings of its owner and I find it hard to believe that it was as stupid as Sheldrake seems to assume.
Only a small number of Sheldrake's trials had random and blind return times. Even in these cases the differences in the return times was very small.