Boy, does this sound familiar. Our 17-year old kitty started doing the same thing. She had a combination of things BUT MEDICATION HELPED. She was losing weight because her thyroid had kicked into overdrive. No matter how much she ate, she could not maintain her weight. MEDICATION HELPED. She was drinking water all the time and peeing all the time and MEDICATION HELPED. Please give your little friend a chance. She has had 17 wonderfully healthy years. She needs your help (and a vet's) to give her a few more years. Tell your vet about her medicine reactions before. They can do a simple blood test to find out many things about her condition.

Here's Kuhio in her prime.