We had a deaf cat once, white, as so many are. Deaf from birth, we think. He was a big, confident animal, and quite relaxed, but not around children. And he hated dogs, and attacked small ones on sight.
The odd thing was, his ears moved around, just as a hearing cat's would.
When he was young, we would throw balls of paper to get his attention, kept a supply on hand.
He had a cat-door, but stayed mostly within fenced territory. Not necessarily ours. Like McGrath's, he had a weird range of meows.