Cats weight

Question
I have a 11 year old cat. She is very overweight and eating prescrip food isn't cutting it. I'm noticing her back legs starting to change "posture" due to the excess weight and I'm looking for some other answers other than feed her less/use prescrip food. I have never given my animals anything other than their food. She does not get any exercise. She has no desire and obviously you can't force a cat. ANY ideas........I'm willing to do anything to help get her weight under control. Thank You!!

Answer
Heather,
forgive me for asking but why isn't the prescription food cutting it? I have seen dozens of cats reduce on Hill's R/D formula and they loved the food. They even liked the dry.

Cats will exercise but you have to trick them into it. There are many ways to do this. Catnip toys, balls, those long elastic things on the end of a stick are all ways I get my cats to exercise. I don't have any overweight cats.
They only eat Science Diet Senior (one is almost 15 and one is 7) and they don't eat table food.

But they do play. Eleven years old is not too late to get her weight down and get her active. Feeding a cat less can be very dangerous due to the problem of a cat developing hepatic lipidosis. You must be careful with weight reduction in cats for this reason.

I have found R/D to be one of the best foods to start them on and then once they have lost the weight they can be put on Science Diet Adult light and keep it off if they are fed the correct amount measured out for their weight.

Just as with us, measuring the food is the ONLY way you know if they are getting the correct amount. Go by the weight on the bag the cat SHOULD weigh, not what she DOES weigh.  That is how you reduce them.

Let me know what the problem is so I can be of more help.