this is actually about my neighbor's cats (naud is one of them). she has had these cats since they were kittens and they are now about 18-19 years old. i don't know a ton about cats, but i've heard that they should have a high quality diet and that milk for adult cats is bad. however, these cats have been eating cat chow and drinking milk since they were kittens. their health is starting to fail, but they are also old. how bad is it really that the cats are eating like this?