I wanted to share about this drinking fountain that I purchased this summer. My little chihuahua’s white fur always was tear stained under her eyes. Since she has been drinking from this fountain, her eyes don’t water anymore and there are no tear stains! It has a charcoal filter, which is probably similar to having a Brita? Originally, I got this for the cats to entertain them with the fountain while drinking their water. I soon saw that the dogs were drinking out of it too!  They have a ‘doggie’ specific one that isn’t as tall. Both my cats and two doggies LOVE drinking out of this fountain!