My dog needs to lose weight help?

First go to the vet and rule out a health condition. If your dog is perfectly healthy, I would cut down on the food he eats. You should be feeding him twice a day, half in the morning and half at night. and you can give him half of his food in a treat ball so he has to work for it (this will mostly stimulate his mind but it's physically healthier than sitting at a food bowl eating). Also for treats you can give him carrots or green beans (you can also add green beans to his food). You may want to increase his exercise also. Try throwing a ball for him, long walks, agility, and the biking is also good.