I have both a grown cat and an elderly grown poodle. The poodle is diabetic and drinks water constantly. The cat refuses to drink water that isn't moving. I was at wit's end till searching eBay. This purchase has saved my pets AND my marriage! The fountain is so easy to assemble - neither pet would approach it initially. The cat would sneak up and swat the water. By morning he was drinking without any prompts! Our beloved dog, "Daisy" soon followed! Neither have looked back since.I would definitely recommend to ANY finicky cat owner!