I too only feed dry to my 7 cats. I've never had a problem with them not drinking enough water. I feed each of them 1/4 cup twice a day of Natural Balance. They have virtually no tarter on their teeth whatsoever. Oliver was at the vet for a check-up a few months ago and my vet said he was one of the healthiest and best looking cats he'd seen in a long time. I was a very happy and proud momma at that moment to receive such a compliment.