I think they may want to check this dog for rabies after they finish filming the video. The dog is laying on a recliner with a bone or something in it's pawns. He brings his back foot up like he is going to scratch his ear but never actually scratchs. Instead the dog bares his teeth and snarls repeatedly. A few times he attacks his bone while other times he snarls and bites his own foot. I'll bet something is biting his ear or some such. Has your dog ever done anything like this?