The Drinkwell Big Dog Pet Fountain provides 288 ounces (2.25 gal) of fresh, filtered water to your pet. A free-falling stream of water entices your pet to drink more. An activated carbon filter removes bad tastes and odors, giving your pet the best way to stay hydrated! The 5-inch-deep bowl helps prevent spills, and the 1-gallon reservoir means less refilling. Replaces SKU DOGC-RE.