I am so happy with my Premier Pet Fountain!  It is compact but still holds 60 ounces of filtered water.  It removes dirt and hair plus the flowing water encourage pets to drink more, therefore supporting urinary and kidney health through proper hydration. The constant flowing water helps to prevent bacteria growth, keeping the fountain cleaner than a standing water bowl. I was constantly having to wash my pets water bowls.  They seem to get nasty in just a day.  On hot days I was changing my water 3 times a day to ensure they had fresh cool water.  With this wonderful fountains contant flow, which can be adjusted easily, I no longer have this chore or worry.  My cats and dog all loves it!