You sound like a moron! Your dogs are not superman, superhuman, or bulletproof, nor do they have ninja like stealth! Not only can they be shot or stabbed, they can easily be pepper sprayed. Police and military dogs have been killed in the line of duty and they are trained better than your dogs and have been hand selected out of hundreds and hundreds of dogs. Stop being naive. We know you love your dogs, but use some simple logic. They would be a strong deterrent at best, anybody truly motivated would kill them quickly!