I have a 18 year old female cat that has been with me since she was 8 weeks old. She has had no problems up until the last few years. She has had hyperthyroidism for the last three years. The drugs were no longer working so two weeks ago she had one thyroid removed. She did great through the surgery. During the last seven days she started not sleeping and crying all the time. She doesnt seem to get enough water but eats and uses her litter box just fine. Well she was staggering around this morning so I took her in. They put her on fluids and gave her a pain injection and told me they needed to keep her overnight. I am having a hard time decided when is enough enough. Could it be possible that certain drugs could help her enough to have a good quality of life or am I just deluding myself. Believe it or not Ive just had to put another one of my babies down. She was 17 and had a large mass in her by her pancreas. I need some input from people who love their cats.