ATTACHES TO THE OUTDOOR WATER FAUCET OR SPIGOT, WORKES LIKE A WATER BOTTLE. THE DOG PRESSES THEIR NOSE ON THE SMALL ROD WHICH RELEASES WATER. THE DOG TURNS THE WATER ON AND OFF WITH THEIR NOSE. MY DOGS LOVE THIS AS THEY CAN HAVE CLEAN, COLD WATER ANYTIME THEY ARE OUT IN THE YARD. YOUR DOG WILL LOVE IT TOO. A MUST FOR ANY DOG LEFT OUTSIDE IN WARM WEATHER. NO MORE SPILLED OR HOT WATER DISHES!!