tuxluvr, you do have a great invention there! It looks like you have nails on three of the sides so I guess that's how you slide the bowl out to wash it. Very clever!! Andy washes his feet in his water bowl (much to Trevor's dismay I'm sure) but neither of my cats have ever actually tried to move their water bowl. On the other hand, my Bella (standard poodle) would occasionally try to pick it up and walk around with it so I got a heavy ceramic bowl. It is pretty large because she drinks a lot and Andy is thrilled because now he thinks I have given him a larger bowl for bathing.