Originally posted by Kirsten
I'm not sure about the average life span of indoor/outdoor cats; I've got that info from a website. We also had a discussion here on this subject, but I guess it's hard to get the correct numbers.
I have also seen many USA sites quote the wrong number of years for inside/outside cats. But I researched this myself for my website and here are the three types cats lifestyle and their potential life expectancy.

An inside only cat has an average life span of 18 to 20 years.
An inside/outside cat has an average life span of 16 to 18 years.
An outside only cat (ferals /strays) has an average life span of 5 years to 7 years. This depends on food and shelter available

These are a couple of English sites, which refer ONLY to inside/outside cats lifespan…
http://www.animals-at-risk-shelter.o...cat_kitten.htm
http://www.valleyvets.co.uk/phc/straycats.htm
http://www.mayhewanimalhome.org/animals/choose.html
http://www.animalfriends.co.uk/press_release040902.html

I also know from real life experience that cats frequently live to 18 years or older in England. My childhood cat dies at 18 years after dying due to kidney disease…nothing to do with her inside/outside lifestyle.

I know you want to promote inside living and that is understandable but you can still do this AND quote the correct figures for inside/outside cat’s life expectancy.

PIF