My dog won't gain weight!?

I would skip the rice. Most dog foods have more than enough carbs in them to satisfy 'em so adding more isn't really the best. Pumpkin too. Good for the fiber but if your dog isn't suffering from diarrhea/constipation, it's more of a low quality filler. Would be better off with meat/eggs, a little cheese, etc. Adding a third meal is a great idea also. Some dogs need more than the recommended amount on the bag so don't be afraid to go above that. Good luck!