The Drinkwell Pet Fountain has many unique features including an adjustable flow rte, convenient side carying handles and it completely disassembles for cleaning. Drinking more water can help your at or dogs health, and has been shown to reduce urinary disease in cats. The Drinkwell is suitable for cats & dogs. The water capacity is 50 fluid onces. By using a 5 inch falling stream to break the surface tension of the water. The Drinkwell Pet Fountain continually aerates the water with heathful oxygen. Aerated water tastes fresher and you can even see it working as tiny bubbles appear in the water. A charcoal filter removes bad taste and odours giving the pet the best possible and most appealing way to stay hydrated. Replacement filters are available in a three pack and the filter should be changed every six to eight weeks. Mains Powered. Dimensions: 11.25" Long, 9.25" Wide, 7" High