Developed by a Veterinarian, The Drinkwell Big-Dog Pet Fountain is perfect for large dogs. With a 5-inch deep bowl to help prevent spills and a 1-gallon reservoir to increase capacity, your dog will stay hydrated, and you’ll refill his water less often. The patented, free-falling stream aerates his water with healthful oxygen, and an activated carbon filter removes bad tastes and odors, encouraging your dog to drink more. Drinking more water helps improve your dog’s health, especially for larger, more active dogs. On average, your dog should drink one ounce of water per pound of weight daily. With the Big-Dog Pet Fountain, you can easily help your big dog stay hydrated and healthy.