Catit Fresh & Clear Drinking Fountain for Cats and Puppies Provides a continuous supply of fresh and clean drinking water Large surface areas adds oxygen to water: for fresher, tastier water Replaceable Purifying Filter: collects food, hair and debris; also helps to reduce bad tastes, odors, and absorbs impurities present in tap water Protective plastic cord guard: prevents cord contact with water; protects cord from pet chewing