40 cat years
A ten year old cat's mass is most likely to be around 6 kilograms, as 6 grams would be extremely lightweight for a cat of that age and size.
I have included a link to a website that will calculate your cat's age for you.
6 WEEKS
A 21 year old cat is about 101 years old in human years.
it depends what breed they are and how long they have lived in the same family
A 13 year old cat in cat years is 13 years old... in human years 68 years old.
Yes, and once they are 1 year old they are officially an adult. When a cat is 7 years old it is officially called mature, 1 year olds just have most of their growing done.
12
84
Yes, think CLAWS.
40. It is believed that for every human year a cat year is 5.
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.