A couple of days ago, I reported on a study that found dogs demonstrated empathy by yawning in response to a human yawn. Intrigued, I conducted my own study (titled 0% of dogs sensitive to human yawns - http://josephmallozzi.com/2008/08/09/august-9-2008-are-human-yawns-contagious-to-dogs-lets-find-out-and-the-weird-food-purchase-of-the-day/ ) which concluded that either a) dogs are not empathetic or b) my dogs knew they…