Cats are notorious for not drinking enough water, and their nearchronic state of dehydration contributes to kidney and bladder problems. Getting cats to drink more can be a key to better health, but you may not need to offer purified water (as is sometimes suggested) to do so. As reported by Dr. Eric Barchas in his veterinary blog on the Dogster.com Web site, a recent clinician's brief put out by the North American Veterinary Conference suggests that cats like tap water just fine, in fact choosing it over purified water in a small study. No matter what kind of water your cat prefers, chances are he'll drink more of it if it's kept recirculating, so consider one of several pet drinking fountains on the market.