I'm having to transition Elvis from Young Again Mature and LID to Dr. Elsey's Clean Protein because, after 3.5 years, he just won't eat much of the YA even after I add a flavor packet. It's been driving me crazy because he keeps crying for me to feed him and the only way I could get any of the YA in him is to powder it in my coffee grinder and mix it in the Fancy Feast, which is becoming more costly and time consuming. Someone on this Board suggested Dr. Elsey's so I called them and they sent me some samples. Elvis has had three 2 oz. sample bags in two days and loves it! BUT, here's my concern... he's been drinking like crazy since and I'm not sure if this is a normal reaction. I mean, he usually lays on the couch beside me for hours sleeping, but the last two days he's been up every 20 minutes or so and heads over to the water bowl. I'm sure he's drinking well over a cup a day now, and of course his urinations are the size of softballs instead of baseballs. So my question is, is this a normal reaction and has anyone else experienced this? Secondly, comparing the two foods...Dr. Elsey's vs. Young Again... are they pretty comparable? Thanks for your insight.