And where would you put the crate? Real service dogs are trained to lie by the master’s feet, even for long periods. I still disagree with you. The blind person needs them sometimes, on the flight. Real service dogs are also trained to only do their business when told to
Now it might have been a case of his owner not taking care of him or he might have picked something up. Don't know.
But in any case the dog could not help it.