If your dog does not eat all their meals at one time, It is possible that it is offering you too.
Not all dogs will eat the amount recommended by the manufacturers of food.
The correct amount should produce in Dog feces dark brown, wrinkled. If the stools are firm, but most soft towards the end, This is a classic sign of overfeeding.
Never change the diet of your dog suddenly (unless under the direction of your veterinarian). If you want to change your diet, do so gradually over a period of a few days a week.
Do not feed your dog before traveling in the car, that can promote the “car-enfermedad, or one hour before or after exercise that this could contribute to a dilation of the stomach and torsion (also known as swelling), It is a life-threatening condition requiring immediate intervention of the veterinary .