[barnbilder]

So you have two high prey drive, high energy dogs feeding off of each other's energy, competing with and being directed by each other, with no reason to conform to human intervention. Recipe for disaster. Most important piece of equipment in a border collie trainer's arsenal is a secure kennel, out of sight of other animals, spacious enough and with enough entertaining features to keep them from going completely nuts.

 

[barnbilder]

The above would be an example of redirection and substitution followed by reward in some dog training circles. But the thing the dog was bred to do is still what it did. There is not much escaping that, at least not until you have a bunch of generations of dogs that don't do what they were bred to do.