Currently I have three. Bitty and Willie are strictly inside cats and Jelly is strictly outside. Up until a couple of years ago I had 25-plus outside (live in the country), but the #@*%$! coyotes got them. I love cats and will never ever be without some in my life. I really miss my Striper, a black & brown striped tabby, who we lost about 4 years ago at the age of 19.