Developed by a veterinarian, the Drinkwell® Big Dog Pet Fountain provides 288 oz (2.25 gal) of fresh, filtered water to your pet. A patented free-falling stream of water entices your pet to drink more and continually aerates the water with healthful oxygen. An activated carbon filter removes bad tastes and odors, giving your pet the best way to stay hydrated! This model features a 5-inch deep bowl to help prevent spills and a 1-gallon reservoir to increase capacity and make refills easy. Replaces SKU DOGC-RE.