Drinkwell Original Fountain is a innovative watering system that feature free falling stream of water and holds up to 50 ounces. Drinkwell fountain contains a charcoal filter so that bad taste and odor is removed from the water giving your pet the best quality water. This is a great way to help keep your pet hydrated and healthy. Since there is a steady stream your pet's water will be fully oxygenated all the time also allowing for your pet to be in better health.