Ensure your dog always has access to fresh, clean water. The WaterDog automatic outdoor pet drinking fountain lets your dog help itself to fresh water, so you don"t have to worry about stagnant or empty water bowls. WaterDog senses your dog"s approach, and automatically dispenses a cool, clean stream of fresh drinking water. Smart sonar sensing technology triggers the WaterDog to turn the water on when your pet comes within three feet (one meter), and turns it off when your pet leaves. You"ll never have to worry about what your dog"s been drinking again! Accommodates your dog day and night for up to one year on four C-cell batteries (not included). Connects quickly and easily to any outdoor faucet. Includes a flow-through connector to accommodate your garden hose as well.