What did the RSPCA dog home in Exeter, England, do to improve their chances of rehoming a dog that proved to be deaf and so not easy to place?

They are teaching dogs sign language?

Exactly Mozart ! Here's the story:

Hear, Boy!

Now, I breed cockerpoos [a cross of American cocker spaniel and miniature poodle] for the charity Hearing Dogs for Deaf People; the dogs are trained to be for a deaf person what a seeing- eye dog is for a blind one; but I've never read of the reverse before