My female cat is 11 years old now, she's never had problems with her weight up until now. We occasionally let her outside but she is mostly an indoor cat. Recently, she has lost a tremendous amount of weight she looks like skin and bones. Everyone who visits has commented on her weight. Although she's losing weight, she eats the same amount but drinks many bowls a day. Her personality has also changed, she used to want to relax alone and just want attention sometimes but now she's always by our hip at all times.. wherever we go, she goes. This is really not like her. Lily also started to like human food which she would never try to touch before, now we catch her on the kitchen counters and in the garbage looking for anything. Im very worried but vets are very expensive. We love Lily.. please help! thank you