One of the puppies hes starting to get fat. Keeps crying unless I giv it more food and I know he's had enough. But when I take him away from the food he starts crying. He just started doing this today. Also is it possible to put a puppy on a diet because hes getting big and the rest are a good weight. I've been starting to feed them individual so I can make sure they get the right amount. But hes not losing weight. He'll be 5 weeks in 3 days.