It depends what cat you're talking about, if it's your cat and you don't know how old he/she is remember what year your cat was born in and count up to the year now.
A 13 year old cat in cat years is 13 years old... in human years 68 years old.
A 21 year old cat is about 101 years old in human years.
It doesnt matter how old you are, the cat is as old as his date of birth to present day.
Snowball the cat is 9 cat years old.
40 cat years
84
12
old whiskers is a old cat.. old whiskers is a old cat..
9 months old
(s)he is 15 years old
The Sly Old Cat was created in 1971.
Another word for an old female cat is a grimalkin.