Hence The Fountain

In nature, moving water is much fresher than stagnant water. The movement constantly breaks the surface tension of the water and draws oxygen from the air into the water. This process is called aeration, and it makes water more appealing to drink. Pets are drawn by instinct to moving water for this reason. The Drinkwell Pet Fountain uses a charcoal filter to filter the water and it aerates the water continuously to keep it much fresher than water in a standing bowl.

Cats, in particular, are predisposed to urinary tract disease, and kidney disease. This partially stems from their not drinking as much water as they should. Cats with urinary tract or kidney disease have a critical need for water to support their kidney function or to prevent crystal formation and obstructions.

The Drinkwell Pet Fountain is veterinarian-designed, and recommended by veterinarian urinary specialists. It encourages water intake and proper hydration in pets, and is especially beneficial for cats with kidney or urinary tract disease. AND ... it discourages jumping on counters in search of dripping faucets.

HOWEVER ... it does NOT discourage jumping on counters in search of freshly rotisseried chickens.

And, it is not solely for cats. There are several models, as these photos show.

Comments:
From black cat on far left: "Dear God ... can't he drink out of his own fountain?!?!?"
From tabby cat second from left: "I wonder ... hmmm ... does he taste like chicken?"
From white cat second from right: "I doubt it ... he smells of iguana urine."
From reddish-brown cat on far right: "Yeah, and he's squatting to poop??? Gross!!!"