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Our cave-dwelling ancestors probably argued about dog training techniques as far back as the domestication of these animals more than 15,000 years ago. We know Roman farmers were exchanging views in the second century BC when scholar Marcus Varro put pen to papyrus with his tips on how to get canines to herd livestock. And of course, debates over training methods still rage today.
The latest discussion concerns dog collars that are controlled remotely to deliver an electric shock at the push of …