Our cat Edna, an orange tabby, is 17 yrs old. She was 5 weeks when we got her. She has eaten nothing but dry kibble her entire life. Her choice, not ours. I hope I don't jinx it, but she has never had a UTI nor any medical issues except small injuries (ie: claw pulled out on furniture.) We stopped regular vaccines years ago when she had a reaction to one. Edna's an inside cat. A couple of years ago I switched her dry food to another brand and she didn't miss a beat, accepted it just fine. We have had her teeth cleaned by a groomer, no anesthetic, since she was six years old. Vet says he's never seen nice teeth like hers on an old cat. She's 12 lbs, not over or underweight for her size. Two years ago we had the new vet do a full "old cat panel" and she came back perfect, except for some minor changes in her liver values. Vet says this is normal for her age. She sleeps a lot these days but her vision and hearing are as good as ever and she will still play if we engage her. I guess we're just lucky and she's been a great kitty. She just goes to prove there are no complete yes or no's on what to feed a cat. Also, she has never seen a supplement. (Crossed fingers)