Most people think of calories as something to be avoided as much as possible. But a calorie is a measurement of energy potential. That means, in simplified terms, that the more calories in your dog’s food, the greater energy potential it contains (more on this later). If the food is high in calories — “high caloric density” — then your dog doesn’t need so much food to supply its daily need for fuel (energy).
Once a dog reaches adulthood, its nutritional needs change from growth to maintenance. And like us humans, some dogs use calories more or less efficiently than others. If you want to be sure your dog is meeting its nutritional needs, weigh it regularly. Normal fluctuations in weight, as well as behavioral patterns, will tell you whether their diet is adequate.