Most owners prefer to feed dog twice a day plus water of course. If food is well-balanced and containes meat and plantes it is enough for good condition of your dog. Even predators eat plants by eating guts of their herbivore’s victims. But do not try to feed a dog only by plants. Better to feed a dog with meat only than only with plants. do not remember that a dog is a carnivore creature.
Some people think that dogs need to starve a day once a week. This idea appears due to the fact that wolfs can starve for a long time. They can live without food even for 14 days! But in wild nature wolfs after all kill a wildfowl and eat as much as possible. But it doesn’t mean that it is the best way of eating. If wolfs have a possibility to eat every day.