I struggled for years with my cat to get him to stay hydrated. Did fountains, running tap, ice cubes in the bowl -- nothing. Then one day, while he was slurping out of my water glass, it occurred to me: Just give him his own water cup up on a table, dumbass. Sure enough, his intake immediately shot up and his little bunny turds disappeared. Would recommend.
My cat had her water jug/mug on the corner of the coffee table. It was pointless to try to keep her off the table, and she actually kept hydrated so...
My husband handed me a glass of water this morning. I took a drink and noticed it wasn't cold. "Was this on your nightstand overnight?!?!" That's cat paw juice!