This was not a hoax. It was very true. Want to read a news article about it? Here.
Mutts: Marine booted for throwing dog off cliff - A blog for animal lovers on pets, dogs, cats, shelters and animal rescue - baltimoresun.com
Mean?....this man (?) was beyoned mean. Demented. Criminal. Inhumane. Cold-blooded. Despicable. Disgusting. Shameful. Disgraceful. Contemptable. Barbarous. Savage.
I thought that his punishment should have been much more severe than it actually was.