Due to improvements in nutrition, veterinary and home care, cats are living a lot longer than they did twenty to thirty years ago. In the past when a cat reached the age of 13 years old, we believed them to be really old. This is definitely no longer the case. We see several cats that are now reaching ages in excess of twenty years. Cats also tend to age a lot more gracefully than dogs and so it is not always easy to tell when they are starting to struggle or are showing signs of illness.