I've got 4 cats, all moggies. The oldest is 19 & 1/2 and has all his own teeth, the kitten is now 10! and I have one that we don't know his age but he's at least 6.the last one is about 14 and has 2 teeth at the back, one on the top and one on the bottom. He lost his teeth due to his jaws, he's a DSH x oriental and has 1 jaw that corresponds with each breed so his teeth never met, eventually he got gum disease and his teeth started to come out. He suffered with lots of absesses and trips to the vets, he had to have steriods for a kidney problem and the vet warned me it might affect his teeth that were left. The vet never took a single tooth out and the cat always ate even when he has a huge absess forming (the cat has problems when he's under as we found out when he had his kidney problems) He was a rescue cat and most of his problems had been caused before I'd got him due to poor diet and his jaw shape. The vet was happy for his teeth to come out naturally as he didn't have any problems. He's also blind in one eye as well, lol.