Personal Protection Dog Training

[g79]

My dog is now 3 years old and does exactly as he's told(mostly).He can fetch different coloured toys that are otherwise identical.
He will bark on command and stop on command,he will rag on command and stop,he will bite on command and stop.
I have him trained so that even if I raise a hand to the kids he goes in for the kill.
And he's still learning.
The way to train any dog is to put him in a situation and show him what you want him to do while constantly saying the same command,never ever change the command.After a while you can start to use a hand signal at the same time as saying the command .Soon the dog will react to a hand signal in the same way as a spoken command.
I can make a small PSST sound to attract his attention and with an expression on my face and a hand signal to direct him and he will go to where I want him and do as I want him to do.
It takes time and effort,but consistency is the best way.
Sometimes he does everything exactly as I want but now and again I just as well be talking to myself,mainly if there's a bitch about.I did think of having him neutered but that just makes dogs lazy.