Our oldest kitty was 19 and he died Dec. 5, 2008. Well I look back at it and saw things I should have noticed (well not really cause he dieid of old age and I couldnt have stoped his death anyway) Anyway, some things were he started peeing everywhere whcih was not like him. He was over 20 pounds and I watched his weight go down rapidly, his one eye clouded over I think he was blind. Anyway the reason i brought all this up is our next oldest, he is probably in his middle teens not real sure. He has also beeen a really big kitty, not as big as Nosey was but pretty big. Anyway, he has been peeing on everything for a while now. I thought nothing of it, but I just noticed today he has lost a lot of weight. I am worrying myself to death!!