Oasis Dog Waterer Heavy Duty Thirst Quencher is easy for pets to use. A lick or nudge of the lever releases the water directly onto the dogs tongue, then shuts off automatically when the dog stops licking.
Always a fresh water supply
Attaches directly to faucet
Auto shut-off
Clean, Sanitary and economical; ideal for home or kennel use.

To train pets, simply touch the lever to release a small amount of water; thirsty pets will lick the lever, releasing yet more water - and thats it! 

Leaving the Thirst Quencher loosely attached to the faucet and dripping during the short training period will help attract the dog to the lever.