I hope it's just kittycats being picky, and not kidney problems OR diabetes--but it never hurts to check. We lucked out with Lucie--she thinks its fun to get her shots, since she can't feel them where we give them (the scruff of the neck where their mothers used to carry them), and it becomes something of a petting opportunity. If we are a few minutes late with the shots, she comes in and reminds us!
piasa, don't waste good Lasagna on a pet..send it my way!
sw