One condition that commonly affects senior cats is deafness. Cats that have reached their senior years often experience a loss of hearing, some more than others. To help your cat adjust to this change as easily as possible, you will have to make some changes of your own. First, try talking louder. Your cat may not be completely deaf. He may still be able to catch some words, or at the very least, to pick up some vibrations and realize you’re trying to get his attention. Also, try using some hand motions. If he sees a movement out of the corner of his eye, he will likely turn his head to see what it is and find you there, attempting to get his attention.