Our cat has been recently diagnosed with diabetes, and the vet noticed something was wrong with her legs. I just looked at them more thoroughly, and she has really no muscles left. Is there anyway to help her build muscle? She is good with her front legs, but not the back. It doesn't affect her much, not having a lot of muscle, but it is rather depressing seeing her get an itch and trying to scratch it. She doesn't play, the most the does is roll around the floor when i get her catnip. She never play or run when we got her (about 6 years ago), so this is not new.