Thank you, everybody! You've given me a lot to think about and some questions to clarify with the doctor.

Cassie's water is in a Pyrex glass bowl. I can wash and rinse it, then put it in the microwave with water in it, zonk until the water boils, let it air-dry and refill it. (I don't have a dishwasher) She got bottled water for awhile when our pipes were being worked on, so she'd prefer only that. I give her filtered tap water.

I want to back up and explain. The shelter from which I adopted Cassie is no-cage as well as no-kill. When the cats are fed, more than one may eat from one plate, so there's no way to know exactly who's eating what. They are given wet food twice a day. The cats in the medical room get individual food and water, because they are in cages. Part of medical room care involves keeping track of what they drink and eat. but the cats in the remainder of the shelter have shared water dishes.

When I brought her home I kept her on the same schedule, wet food twice a day and dry food always available. Food has never been a problem unless she eats too fast and barfs. Now I feed her smaller servings 3 times a day. She would be happiest eating nothing but turkey or chicken, tuna, pureed baby food meat, and tuna juice! But that's not an option. I give her a bit of cooked chicken, tuna or pureed baby food meat as a treat, but not as her regular food. I love her tons and i want her eating an appropriate food. She also likes yogurt (especially licking the tin foil lid), peas, canned pumpkin, and milk. My sister's (RB) Siamese cat liked ham from the supermarket deli, of all things. If she was making a sandwich, he would come running when he heard her unwrapping the deli meat! She'd give him a bit as a treat. He also liked steak!

So - again - thank you ALL! I appreciate your help so much! Thank you! Could you please give your well-fed kitties some petting and hugs from me.