I have two large dogs, 85lbs and 110lbs. I e bought a few fountains before but had to keep refilling them several several times a day. The large size of this one is awesome and I like how you can adjust the flow of the water, which enables control of how loud the water trickling is. At night I turn it to the lowest flow setting and don’t hear a thing.
**afterthoughts- I’ve had the fountain for 7 months now. Finding quality filters is a challenge. So much of a challenge, I wish I had bought another fountain that used different style filters that are more readily available.