Cats

Cats are terrible at drinking water. They evolved from desert animals, so their thirst drive is weak — they often don’t bother with the water bowl until they’re already dehydrated. This is a big reason kidney disease and urinary tract problems are so common in older cats. A fountain helps because running water catches their attention. The sound, the movement — it flips some switch in their brain that a still bowl doesn’t. Plus the water stays cooler and fresher when it’s circulating through a filter. Here are the best cat water fountains right now, compared across capacity, filtration, noise, and how annoying they are to clean. ...