
When things get old, they become useless...

From about the age of ten to twelve years, a cat may begin to
show signs of growing old. This may not be immediately apparent as
the slowing down process is very gradual. Internal organs may not
work as well as they once did and joints may become that little bit
stiffer. Over time the cat seems to restrict its activities, is far
less playful and becomes a creature of sedentary habits. Particular
health conditions such as diabetes or arthritis require constant
supervision and medical intervention.
The oldest cat recorded was a
tabby called Puss who was said to have lived for 36 years. The
oldest pedigreed cat on record is Sukoo, a Siamese who died in
1989, at the age of 31 years. These are exceptional ages, however.
Most cats live for about 14-16 years and a few may reach 20 years.
With pedigreed cats there is a very accurate means of determining
age, as they are normally registered with an exact date of birth
and registration number.
When you first get a
12-week-old kitten, it is very likely that its lifespan will be
something between ten and fifteen years. This could mean that the
cat will become a companion to your children as well as to
yourself. A longer life is not unusual, in which case it may well
live to see your grandchildren as well. To borrow from the dog
world, a cat is for life, not just for Christmas. This has to be
thoroughly understood before a kitten joins the household.
Neutered (altered) cats have a
slightly longer lifespan than those which remain unneutered. This
is particularly true of male cats. An unneutered (unaltered) tom
will fight to defend territory and the resulting injuries and
infections may shorten his life. Females lead a much quieter life,
and a career spent having kittens, in an environment in which her
condition is well-maintained, appears to have little effect on the
female's longevity.
Apart from differing
nutritional requirements at various stages of its life, a cat's
physical responses slow down as it gets older and joints become
stiff. This not only has the effect of reducing suppleness and
agility, but has implications for the daily care of the cat such as
grooming.
From 'CAT BREEDS & CAT CARE'