The PetSafe Drinkwell Outdoor Dog Pet Fountain is our largest capacity pet fountain, offering 450 oz. of fresh, filtered water to your pet. With its free-falling stream of water, pets are encouraged to drink more, and they get the cleanest, freshest-tasting water. This system is perfect for large dogs or multiple pet homes. Made with high-impact UV-resistant plastic, this durable fountain can be placed inside the home or outdoors when temperatures are above 40°F. The dual filtration system removes bad tastes and odors from the water and catches dirt, hair, and other debris that larger dogs tend to leave behind. Trust PetSafe to help keep your pet healthy, safe and happy.