can cats become deaf with age?
haven't seen it happen but my 14 yr old cat stopped being afraid of the vacuum so i'm wondering why
Yes. Just like people, cats can grow deaf.
is there anything we can to figure if this is happening? he still moves his ears and sometimes shudders after loud abrupt sounds
Hmm. When he's sleeping, you could have someone across the room clap or make a noise and see if he responds. You can also use a clicker, like for dog training, and walk around him clicking it every so often and see if he responds to that.

He's 14, you shouldn't be too concerned if he's starting to get deaf. I've had two 16 year old cats, one who could hear fine and one who couldn't . The deaf one was just the same as the other Emotion: smile