And it couldn't walk. They had to carry it in a wheelbarrow. We have one in the clinic now that weighs twenty pounds. I'm afraid it will encourage some to deliberately make their cat fat enough to get on TV, or into the Guinness Book of Records. That would be cruel and inhumane, and, I would hope, worthy of prosecution.
Cats can get fat enough on their own.
If he is not losing, reduce the ration again. Continuing this process will usually result in weight loss. It will also result in a hungry dog, and therein lies the rub. Some people can't abide a hungry dog. Some hungry dogs are downright unabidable.