Well, getting back to the glance off skull thing..
When I worked security in a hotel, we had a family staying with us. There were the two elderly parents, and their two thirty something children. The daughter was fine, but the son was a mental patient, who decided to stop taking his pills a few days before they left on their trip.
About 8PM on the third night they were there, the son produced a very nasty looking old Model 28 that had seen better days, and held his parents and sister at gunpoint, screaming he was going to kill them for being "Satan's minions", and "attacking my mind". We found out about it when the front desk called to ask if they were going to be checking out. He got a tirade from the son instead, we called the police. When the first two cops arrived, they called him and he fired off a round. It went out the window, and took a chunk off the building next door, causing pedestrians to run for cover.
A negotiator and the SWAT team showed up, along with a lot more police. They tried to talk to him, but he got more and more agitated. One of the SWAT team members went up to the room to see if there was any way to do anything, and surprisingly, the door was wide open. After he was shot at, the command officers talked a while and one of the strange looking police dogs they had then was brought in. He was getting old, and was a very nasty piece of work in general. Looked like a big headed black Lab with a smaller than normal body. Since he was going to be "retired" soon, they decided to let him go in, and when the son was being occupied, rush in and take him down. I was on the street keeping people from walking around the corner and possibly getting hit. They called the son and told him if he didn't come down, the dog was coming up. I thought to myself "And what if he closes the door?"
But they didn't think of that.
Four policemen in full body armor went up the stairs, got set and they let the dog loose. He ran into the room, and we hear the gun go off, BOOM, and then someone started screaming. A lot. Suddenly the parents and the sister appear, shaken up but unhurt. An ambulance pulls up, and the son is brought down, totally covered in blood. He's strapped down and fighting pretty good, but they just ignored his ravings, and loaded him up and they took him away.
A few minutes later, the dog appears, quite pleased with himself. He has a hole right between his eyes, and lots of powder burns on his eyes. The bullet went right up the crevice most dogs have between their eyes and under the skin and out the back of his head and into the wall. Needless to say, the dog got very angry because of being shot, and proceeded to munch the son pretty badly before the SWAT guys came in and rescued him. Since they were less than 10 feet away, I guess they wanted to make sure he was busy before they went in.
When he got to the hospital, the doctors took xrays after knocking him out and almost all his injuries were to his hands and groin. They took X-rays and were looking at them puzzled. The cop there watching the son asked them why were they so confused. The one doctor says, "We can't see any pellets!"
The cop laughs and says, "He wasn't shotgunned, a dog did that to him after he shot it!" The doctors shook their heads in amazement.
A couple of days later, I look and see the family, son included, getting into a cab to go the airport. The son was moving very carefully, but not bad considering the damage the dog did to him. They ended up paying us for damge to the window and door, and the DA eventually dropped the charges.
The dog died of cancer about a year later. They said he was a much nicer dog after the shooting than he was previously.