Deaf cats are not uncommon; in fact as many cats get older they can show signs of deadness.
My own old cat had started to show signs of deafness, you could walk right up behind her without her knowing you were there and then she would jump out of her skin when she finally noticed you.
It was a worry, as she may not hear traffic coming or other animals etc, so we did start to keep an extra eye on her.
Of course some cats are born deaf and just like deaf humans they compensate by using their other senses more.
In some cases these cats are so well adjusted to their disability that it can sometimes be impossible to know that they are in fact deaf.
There are other reasons too where deafness can occur, for instance:
There may me many owners out there who have a cats who has hearing problems and who are not aware of it, simply because the cats have learned to cope well. However there are some common signs which could indicate that your cat is having hearing problems. For instance:
Any of these signs could indicate deafness and all need to be checked by a vet as in some cases the cause of the deafness can be cured with treatment.
Most cats will learn to adapt to their deafness over time but there a few things as an owner you can do to make things a little easier for them.
In summary, owning a deaf cat need not be any different from owning a hearing cat. In most cases the cat will compensate for its disability and be able to live a normal happy life.