My dog is not trained to attack. He will do so out of protecting the ones he loves.
I see - so one can only pray that this dog of yours is always kept on a short leash.
He learned by himself, that your house and garden is only permitted to your family and friends - right?
He also learned by himself to notice the difference between an outsider handing your kid an ice-cream or having evil thoughts, or a by-passer being nice or evil - right?
He also learned by himself - who to bark at and not ? - or is he one of those dogs that rants and barks at anything?
You are describing a one-man dog - ultimately dangerous to the own family. and anyone else. And a dog the size you described, needs to be trained incl. when and how to attack!!
But anyhow, keep digging yourself into more dumb replies - you are great at it.
A guide dog for the blind leads the person. If they do not hold the lead handle, the dog can do little or nothing. You are confused.
No you are - since this discussion wasn't about a blind person being led by a guide aka blind-dog - but an AUTISTIC person being unsuitable for a blind-dog - since e.g. a Blind dog is trained to e.g. stop his master from moving over a curb, hitting into obstacles or crossing the road without a Zebra marking, incl. using physical force to achieve this, (which however does not permit for biting or overly aggressive force).
That is why there are specially trained Autistic dogs for Autistic people - and they do not enforce anything onto an autistic person due to known reasons (well not to you).
They are NOT allowed to refrain an Autistic person with physical force from running away and are trained to leave the scene if an autistic person suffers a meltdown - but are supposed to bark in order to get the parents to stop the kid from running away, aka calling for HUMAN - PARENTAL assistance.
That is why parents of an autistic child need to sign for FULL responsibility towards an autistic trained dog (well maybe not in the USA) - and only one of the parents is allowed to work full time - due to the dog maybe barking/calling for parental assistance.
Except for showing off your killer mauling dog - you don't seem to know much to anything about dogs.