Similar thing here. My deaf cat ends up getting locked in closets and shut into the pantry, because she gets behind stuff or on top and you can't see her.

Anyway, we've trained our dog to not only find her, but to alert us if she's shut up somewhere. We had to close our bedroom door because we were having some construction done and it was dusty, well, our little pup was FREAKING out because our cat was locked in the room. It was the cutest damn thing. We had to let that cat out and our pup didn't leave her side for like 48 hours.