I adopted two cats in August and my kitten was very underweight. He's since plumped up to normal size, but my 2 year old cat has been eating all of the food. When he doesn't finish his food and goes back to graze, she eats it all. She's gotten so fat and I can't be home all the time to monitor her eating, but she's obese. She was 8 pounds at adoption and now weighs 12. I don't know what to do! Help!