Your dog can have fresh cold water in your yard whenever he wants with the Contech WaterDog Automatic Outdoor Pet Drinking Fountain. This device attaches to the base of your garden hose and has a proximity sensor. When the pet approaches within 3 feet, the water starts streaming out and your dog can take a drink. When he moves away, it turns off. No standing water, no bothering you, no cleaning of pet bowls, no dehydrated dogs, no worries. A flow-through connector allows your garden hose to remain attached and it can run for a year on a single set of batteries.