I have to tell you that my Oliver doesn't seem to be deaf, although I have begun to question it recently. He also loves the vacuum cleaner, likes to bite it, chase it, get close to it. I just figured he liked it, not that he was deaf (although you'd assume the noise would bother them). I don't let him get close to the vacuum unless he's in his cage or playpen and I'm vacuuming outside of it. I've used squeaky toys and he seems to respond to them, so I'm almost sure he's either not deaf, or he's deaf to only certain tones. Hope this helps. Jen and Archie The Magnificient Seven Fuzzies and their cat and dog [Posted in FML issue 4948]