(CNN) -- The military is investigating a "shocking and deplorable" YouTube video that seems to show a Marine throwing a puppy off a rocky cliff.
The black-and-white puppy makes a yelping sound as it flies through the air.
"That's mean, that was mean," one companion says off-camera, addressing the alleged puppy thrower by his last name. The fate of the animal is not known.
The Marine is identified on the video and in other Internet postings as a lance corporal stationed at Marine Corps Base Hawaii in Kaneohe.
It's not clear where the video was shot, although the man who appears to throw the puppy and another Marine are in full combat gear with helmets.
"This is a shocking and deplorable video that is contrary to the high standards that we set for every Marine," Marine Corps spokesman Maj. Chris Perrine said at a news conference Monday night.