To buy: $18 (was $47); amazon.com. All you need to do to get the water fountain running is plug it into a wall socket and fill it up with clean water. To make sure the water your dog is drinking remains fresh, the fountain has an automatic pump circulator that provides a continuous stream of water. It even has an active carbon filter that collects impurities and debris like hair, and its large surface area means multiple dogs can share this fountain without overcrowding. One busy dog parent calls it a “great watering fountain for dogs” and loves that they don’t have to change the water every day. It makes their “already busy life easier,” so it’s no wonder more than 1,600 shoppers have given it a five-star rating. Others say that the fountain is very quiet, and one confirmed that all they hear is a “slight water trickle if it needs more water.” Shoppers love that the water gets filtered and oxygenated in the fountain, and someone said it’s “much easier to use” than constantly refilling their dog’s water bowls.