Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Would be great if it didn't leak

The cats like the fountain, but it leaks unless the water level is very low. Since many people don't have this problem I suspect that it depends on how tight the joints between the various parts are. Sealing the joints won't work because the device needs to be taken apart for cleaning.If you get one, be prepared to send it back if it leaks.Edit: While the bottom of the fountain appears to be cast as a single piece, there is a small square plate on the bottom of the unit where the pump fits. Over time the glue loosens and this leaks where it is attached. This can be fixed by a bit of epoxy around the seam.