Marine throws puppy off cliff

[sinister1]

Looks fake. If it is real, it just goes to show what war does to people.

Actually, kinda the opposite. Certain psyches gravitate towards certain fields, and the military tends to garner attention from people who are more cruel than usual. In fact, militaries actually acknowledge that certain 'fucked in the head' personalities are fantastic for them. Dexter type people. They make the best killers. Some psychologists speculate that if people like Ted Bundy were used correctly in the military they possibly would have never become serial killers. On top of that, they would probably not be the type to suffer from any kind of combat disorders, and would not hesitate in combat

I am pretty sure that the "Dexter" type you mentioned is an extreme minority. I am referring to the majority of people that join the armed forces and fall within a more normal range of behavior and mental health. I know individuals like this that did awful things during war and cannot even fathom how they could do such things when looking back years later after they had returned to society. Killing animals is often a feature of disorders like antisocial personality which stems from conduct disorder as a child/teen. So this guy either has some mental disorder (which is what you seem to be suggesting), he is sane, but war has f'ed up his head, or this is a fake (the dog never moves during the video could be dead before he tosses it).

p.s. people that have mental health issues such as antisocial personality disorder would have a tough time in the military b/c they have a real problem with authority and would have trouble following orders.