My cats, Hannah and Puff are 1 year and 6 months old. I was looking them over, I do weekly checks to make sure everything is normal, no lumps, clean ears and eyes, you know the usual. But tonight I noticed something I havent before. They both have terrible teeth. Stained yellow and slightly pink inflammed gums. Hannah even has brown residue on a few of her teeth. I just took them to the vet September 13th, and they looked at them and didnt say anything about it. They are so young, I think it is unusual to have to get them a dental at such a young age. Most wait until many years before doing this. They free feed dry food all day, and I buy them anti tartre tempations treats. They do get canned food twice a day. Stash has perfect teeth. Should I be concerned? Should I brush their teeth?(with the cat toothpaste and cat toothbrush of course) Any advice? I worked for a vet for a very long time, and I have never ever seen such young kitties that are very healthy have to get this done...any help would be appreiciated. Thanks