looks to me like you might be underfeeding your cat. my ten year old gets 1/2 can, which is about 2 tbsp of iams wetfood, lamb and rice and i keep a bowl of iams dry out. he comes and goes when he wants to and eats. cats are not like dogs. Dogs eat whatever is there and all of it. both my cats are slim and very healthy. give him alittle more catfood and see if he is more satisfied. taz

She may have a problem with her thyroid, which would have to be tested by a vet.