I saw the video. The dog looked dead already. And the guys looked like they were in Iraq. I deem that a hostile combat environment, where every day you run the chance of getting into a firefight, encountering hostiles, running over landmines or even having a suicidal bomber crash his way through the barricades. There are no days off - even when they are in the "rear" they still are under threat. It's high stress and most these guys have been serving longer than recommended. All know somebody who has been wounded and most likely killed. Until you are in that kind of environment you have no idea how morbid your sense of humor can become. Odds are that dog was dead. The Marines (know for their bravery not their intelligence) decided to f around and blow off steam. Sound effects seemed added or even possibly was a devil dog himself f'ng around making noises behind the camera. My opinion still stands, that these Marines did not deserve the punishment and that the punishment was politically motivated by people who don't really give a crap about their soldiers anyway. To be more concerned over a dead dog than dead Marines, soldiers, sailors and airmen tells me a lot about the people biytching about it.
Don't get me wrong, I love the heck out of my animals. I'm a bleeding heart too. But not in a combat arena.