The PetSafe Drinkwell Pet Water Fountain has a generous 2-gallon water capacity, making it an ideal choice for big dogs or multi-pet families. The adjustable flow control allows you to customize the speed of the water stream to cater to your pet's unique drinking preferences. You can also turn off the water stream for quieter operation for the shyest cats. Considering that most pet needs 1 oz of water per 1 lb they weigh having a water fountain will meet their daily hydration needs. Sleep soundly knowing that your pet will always have access to water, even if the power goes out, thanks to the open bowl design. Enjoy the ease of cleaning as the fountain is top-rack dishwasher safe (excluding the pump), and it is designed with no hard-to-reach places. This is a major advantage for pet owners, saving time and effort in maintaining the cleanliness of the fountain, allowing you to provide your pets with fresh, clean water with minimal fuss. PetSafe brand has been a trusted global leader in pet behavior, containment and lifestyle innovations for nearly 30 years. Our pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions about our filter for cat water fountain. We are committed to helping pets and their people live happy together.