Very young puppies do better when offered food three times a day. As they grow, they will require fewer feedings, but will eat more at each feeding. If your puppy doesn’t seem to be hungry that often, cut the feedings down to twice a day.
After ten or twelve weeks of age, you should just offer food twice a day — once in the morning, and once in the evening. Even adult dogs should eat two times a day. If you are currently feeding your grown dog two cups of food once a day, try feeding one cup twice a day instead.