A cat's age

At what age would you consider a cat to be a senior?

10-12

According to the American Association of Feline Practitioners, "There is no specific age at which a cat “becomes senior.” Individual animals and body systems age at different rates, but one convenient way to view older cats is to classify them as “mature or middle aged” (7-10 years), “senior” (11-14 years), and "geriatric” (15+ years). (FAB) This helps to focus on the varying disease risks of the different groups."

http://www.catvets.com/uploads/PDF/2008SrCareGuidelinesFinal.pdf

I read many times the cutoff age is 7 years, but that makes no sense because it would mean being seniors more than half of their lives if they never go outside.

There are cat age conversion calculators online. Type your cat's age in years and it will show you how old the kitty would be if it was human. I think 60 is the cutoff age in humans, so I would use the closest age to that in cats.

I used a cat age calculator to figure this out:

10 = 57

11 = 61

12 = 65

So I would say "senior" is 11 years for a cat.