Buzz going off on another dog in the play yard

Play groups and a pack can rehabilitate dogs. If you have ever watched The Dog Whisperer, then you've heard Cesar Milan say that. It's also something that the Longmont Humane Society has been doing for more than five years. With a live release rate of 97%, I believe their behavior assessment, and their training and behavior modification program speaks for itself. Considering that they typically know little to nothing about the history of the dogs, play groups are a key part of the program. In this video, you'll see a dog that attaches quickly to people, but turns on another dog. There is nothing special about this video, it's just what can happen. Can you tell what triggered the dog? BTW, less than three minutes later, the mastiff was back to playing as if nothing happen.

What class is like :-)

Play yards, June 2