He should learn to be more chivalrous and behave like a well-mannered dog. We seek to link those who care with those who care in all arenas, commercial, educational, recreational, and inspirational, when it comes to our relationships with all living creatures. It's best to go to classes with your dog and teach your dog the basics of good manners and simple obedience, which will make your dog a better companion for life. At her age, I hate to make her miserable by denying her food, but I worry about obesity. She hates diet dog food.
Some dogs beg because they want attention.
If your dog is ravenously hungry, she may have a serious nutritional deficiency, which was probably caused by the low cal, high fiber diet that your poor dog has been put on in order to lose weight. So your dog needs some quality food and I would supplement her diet with cooked whole-grain rice, pasta, scrambled egg, cottage cheese, and so forth. A thorough physical exam by a veterinarian would also be advisable. Our vet said to just watch her to see if she developes pain. He says then he would have to pull her tooth, which would probably break her jaw, but she is too fragile to be put asleep for an operation.