Meet the PetSafe® Outlast™ 1.7L Pumpless Pet Fountain - the world's first cat fountain without a traditional pump! Our patented HydroSpin™ Technology keeps water flowing and eliminates the pain points that come with traditional fountains. The filter system keeps water tasting and looking fresh, giving your pet a healthier hydration experience. Ditch the standard pet fountain for something revolutionary - choose Outlast Pumpless Fountain.