Super 3-liter bucket: Compared to 2 liters on the market, the cat/dog water fountain has a large capacity of 3 liters, which can cover the hydration volume of an adult cat for 5-7 days. Ideal water fountain for small and medium-sized pets. If you have cats and dogs or more than 2 cats/dogs, this drinking fountain is a good choice for you. Smart water dispenser: Thanks to the translucent material and built-in LED light, you can easily see the water level. You don't need to open the lid of the water fountain every time to check the water level. If the light is blue, the pump is working and has enough water. When the water level reaches the minimum level, the LED lights up red and the water pump automatically turns off. Cat Water Fountain with 5 Activated Carbon Filters: High-quality filters work with triple filtration, activated carbon, and high-density PP cotton to clean tap water, completely remove hair, debris, and eliminate odors. We recommend replacing the filter every 4 to 6 weeks