Pet Lodge Plastic Ever Full Pet Bowl 3 gal. is an automatic outdoor watering system designed to be attached to a standard three-fourths garden hose. The bowl fills to the right drinking level once the tap is turned on. An automatic float inside the water dish is what controls the water level preventing the water to overflow or spill. The water in this bowl is automatically replenished, maintaining a clean and fresh supply of water for your dog and other animals. Molded chew-resistant and high-impact plastic for years of service under hefty use and does not require major assembly. This automatic water bowl holds up to 3 gallons.