This fountain works for both cats and dogs. I was a little worried it would freak my dogs out, but they took to it just fine. It's really quick and easy to set up, and I only have to refill it every couple of days. Just make sure you're careful about how strong you toggle the stream onto, I woke up in the middle of the night the first day I had it to a loud gulping sound and had to turn it down and refill it even though not much water had been drunk yet. Also, it's pretty ugly. It looks exactly like what the pictures show, but it's definitely uglier than the bowls I've used in the past, and not as cute as a lot of the pet fountains out there.