Critter Concepts Automatic Dog Water Bowl 3.5 Gallons By, Dog Water Dispenser that is virtually indestructible, used by dog daycares and dog pros. The last Automatic Dog Waterer that you will buy. Automatic Dog Waterer in 3.5, 5.0 and 6.5 gallon sizes Dog Water Dispenser that is Doggie daycare and rescue tested and approved. Rolls on 3 inch locking wheels. This automatic dog water bowl is easy to use for kids and seniors. Easy to clean, this dog water fountain uses an FDA approved, food grade water container. Made in USA Virtually indestructible, this may be the last automatic dog waterer that you will ever buy.