The reason why dogs don’t eat dog food well may be because they are picky eaters or the dog food does not suit their taste. You can first change the dog’s food to see if it eats it. If it still doesn’t eat it, then If you use the fasting method, the dog will eat it after several times. If the dog does not eat dog food during the fasting method, then you can only mix some canned food or meat into the dog food, so that the dog will eat it.