I really like this pet fountain. I have only have one cat and the large size of this size (specially during summer as it evaporates faster) makes it more convenient for me as I don't have to refill it as often. The fountain offers a window on the from to check water level which is great. It comes with 2 different filters that are easy to install and the pump is not loud like other types of pumps. My cat seems to like it too. I definitely recommend .