Thank you for the information. Cosmo is about 11 years old. He isn't on any medications or special fluids. I read that there was some soft food (Innova - which I feed my dog) for cats with kidney issues. It's high in water and low in protein. I'll be going to the health food pet store this weekend so I will take a look at it.

He is actually fine and there are no signs of the disease (except for losing a little weight). I will call the Vet on Monday and ask if he should be on any medications.

Thanks again.