Sure. Ordinary harness.
Right.
The rainbow collar thing looks like the specialized collars I’ve seen on service dogs in my capacity as a case manager-I forget the name of it-but the photo in post #11 is showing just an ordinary harness for a big dog-you can buy one at any ranch store, Petsmart of from Chewy online...
I get that you don’t like large guarding breed dogs, but a harness on a big dog does not a monster make-there are people like me who do not like small dogd-especially yappy little frou frou purse dogs-if we all liked the same kind of dog, AKC and all the other purebred registries would cease to exist-from a lack of business...